Re: Enable a button once text is added to textfield
On May 3, 2011, at 9:10 AM, Eric Williams wile...@gmail.com wrote: Any suggestions on how I can bind a button to a textfield so that the button is disabled when the field is empty, and then enabled once text has been entered in the field? The typical MVC approach would be to bind your buttons enabled binding to a key on a controller object that, in turn, reflects the state of your text field. Remember, the controller is where everything meets. --Kyle Sluder___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Instruments and leaks in a DRM framework
On May 1, 2011, at 3:42 AM, Jose R.P. - Renacentist Software wrote: I've run Instruments in order to detect leaks in a sample xcodeproj (RTestApp) for the framework I'm creating. There are leaks and the tool never identifies my Framework as the responsible one, but there are at least fifty Foundation (substringWithRange:) and libcrypto (CRYPTO_malloc) leaks. Is this result reliable? I mean, I don't want to be fooled by Instruments into believing that I'm not the responsible of the leaks. Instruments (or malloc_history or any of the similar tools) will tell you where the object was allocated, but that doesn't always tell you who should have freed it. For example, if you have code like this NSString *blah = [otherString substringWIthRange: ... ]; [blah retain]; ... // never getting around to releasing it will show the source of the leaked string as -substringWIthRange:, but the bug is in your code. Most of the time the culprit is visible somewhere in the call stack above the malloc event that Instruments finds; that's why it records the call stack for you. In more complicated situations you may have to trace through multiple retains, releases, autoreleases, and the like to find the unbalanced call. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Vertical alignment in NSTextView
Hello Andrew, Nope - that will not going to work, because container inset is expressed as a size and inset is set equally from both sizes: inset.width for left and right margins, inset.height for top and bottom margins. But overwriting NSTextView's -(NSPoint)textContainerOrigin might do the trick. Going to try that. Regards, Rimas M. On Tue, May 3, 2011 at 7:05 PM, Andrew Glushchenko nosetin...@gmail.com wrote: Hello, Rimas You can change the inset of the NSTextContainer associated with the NSTextView for this purpose. See setTextContainerInset method of NSTextView. 2011/5/3 Rimas M. apple.list...@gmail.com Hello, I continue my fight with cocoa text system :)) At the moment I am loosing.. Now I am trying to implement vertical text alignment in NSTextView. If I would need only drawing, would be quite easy. But I need to maintain an editing capability. The thing I am talking about is very similar (or even the same) to the text writing inside shape (rectangle) using Keynote: insert rectangle shape, double click it ant write some text. Using inspector (Text tab) you can choose between top, middle and bottom vertical alignment. I am almost sure, that I need to subclass and overwrite some stuff from either NSLayoutManager or NSATSTypesetter. Just not sure which exact... Any thoughts? Best Regards, Rimas M. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/nosetinker%40gmail.com This email sent to nosetin...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Interruption of NSTreeController's selectionIndexPaths updating after mouseDown
On Apr 28, 2011, at 07:46, Kirill K wrote: the thread that adds nodes to TreeController interrupts the sequence (I guess) called by mouseDown event so insertObject: atArrangedObjectIndexPath: is called before thensetSelectionIndexPaths:. If you guess the sequence of events when it fails, you may end up chasing the wrong problem. :) Better to actually find out what's going wrong. However ... I think you have two fundamental flaws in your approach: -- How well it works is going to depend on whether the NSOutlineView uses an event tracking loop or not, in response to 'super mouseDown:event:'. Predicting its behavior seems very fragile, and you'll need a deeper understanding of run loop modes to analyze the behavior. -- You *think* you've solved a thread synchronization problem by pushing the 'insertObject:...' calls into the main thread. You haven't. You've solved 2 sub-problems: (1) preventing KVO notifications leading to UI updates on a background thread, and (2) preventing data corruption resulting from using non-thread-safe methods in multiple threads simultaneously. Those are the easy things. The hard thing is to *design* a thread synchronization strategy that actually works. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: onSocketDidDisconnect in CocoaAsyncSocket
Dear Patrick, Thanks so much for your reply! I ever believed that TCP protocols handle everything on the connection. Only UDP needs a lot of work to manage the connection. According to your description, it is not like that? I have not worked on a so low level network programming. Your email helps me a lot. If you could take a look at the code, I appreciate so much! Best, Bing On Wed, May 4, 2011 at 4:13 PM, Patrick Mau p...@me.com wrote: Hallo Bing The Networking API gives you choices to react. It was a good design to not specify automatic timeouts within TCP. Think about unplugging a network cable or even a 5 minute power outage. If you, as an application designer rely on a functional connection even afterthese events, you could do with TCP. Becuase no one but you is responsible to decide how to react. Therefore no-one has closed anything for you. Regarding timeouts, I think every networked client-server code has to handle timeouts on an application level to limit resource usage. You can even handle your client getting killed in Activity Monitor by writing a signal handler for SIGTERM. That is, by the way, the difference between the Quit and Force Quit action. One sends a SIGTERM, the other a SIGKILL. The last one can not be handled in code, per definition. You should not use socket I/O functions in signal handling code hoever, you should only set a flag and test for that in you main run loop. Regarding heartbeat, there's the SO_KEEPALIVE socket option, that is used to transmit packets of zero length on idle connections. This is useful to prevent hardware in your network, i.e firewalls or load-balancers to forget about NAT or dynamic rules. They do limit resources, too. By using timeouts. Instead of talking about TCP in general I will look at the sample code you mentioned in your first mail and code an example project if I have the time today. Best regards Patrick On 04.Mai.2011, at 05:52, Bing Li wrote: Dear Patrick, Thanks so much for your answer! I don't know the details of TCP. However, TCP should be a reliable protocol. Developers are not required to keep its connection state since TCP does that. That's one of the important differences between TCP and UDP, right? When using UDP, it is mandatory to keep the connection by developers themselves. Am I right? According to my experiences, when a TCP connection is disconnected without calling the relevant closing method, an exception should be thrown in the counterpart side. Do you think so? A heartbeat you mentioned should be handled by TCP not programmers. Best regards, Bing On Wed, May 4, 2011 at 2:08 AM, Patrick Mau p...@me.com wrote: Hallo Bing I saw your message and thought I share my ideas. Maybe it's of some use to you. TCP/IP is a state machine, meaning it can only react to state changes on a connection. When you kill a connected client, no packet is transmitted to your server anymore. That means that it has not received a FIN packet that would indicate your client has been killed. Your server will only know about your terminated client by the time it reads or writes to the socket, because it will no longer receive an ACK for these packets. That's where timeouts come into play. If you install some kind of timer that would fire after a certain time of inactivity, your server itself should close the connection. It will then timeout waiting for the ACK that it is waiting for in response to the FIN packet it has tried to send. That's all based on on my BSD socket programming knowlegde, I've not used the CocoaAsyncSocket API myself. I hope it gives you some idea. Patrick On 02.Mai.2011, at 18:16, Bing Li wrote: Dear all, Can anyone answer this question? Thanks so much! Bing On Fri, Apr 29, 2011 at 7:21 PM, Bing Li lbl...@gmail.com wrote: Dear Michael, Disgracefully means the client does not close normally. It might be crashed or closed by killing the relevant thread or process. I did that by clicking the red Tasks button in XCode. In this situation, the connection must not be closed properly with the socket methods. According to my test, [AsyncSocketDelegate onSocket: willDisconnectWithError:] is not called either. I got the sample code from http://www.macresearch.org/cocoa-scientists-part-xxix-message. I am still a new developer. I am not sure if the code has any problems. Thanks so much for your help! Best regards, BIng On Fri, Apr 29, 2011 at 6:56 AM, Michael Dautermann dauterm...@mac.comwrote: I started to use CocoaAsyncSocket to establish TCP connections among iPads. I got a problem. According to the references ( http://code.google.com/p/cocoaasyncsocket/wiki/Reference_AsyncSocket ), onSocketDidDisconnect would be invoked immediately if the connection is not already disconnected. I felt confused. What does not already disconnected mean? I think
Best strategy of handling many separated text lines
Hello! Does using many NSTextView is good strategy for several separated text lines ? I need draw text right-aligned and calculate width for each line. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Best strategy of handling many separated text lines
Hard to say from the vague description, but I'd say that having one text view per line is probably a bad idea. You could have one text view, set the text right-align (NSParagraphStyle on NSAttributesString/NSTextStorage) then set the line spacing to space the lines how you want, but on the other hand if it's more like a table perhaps a table view might be the way to go. Finally you could just draw the lines of text in a single view. It all depends... --Graham On 04/05/2011, at 7:06 PM, Дмитрий Николаев wrote: Hello! Does using many NSTextView is good strategy for several separated text lines ? I need draw text right-aligned and calculate width for each line. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: block animation
Ignore my parallel issue with loading views - they are not affecting this.
I've now made a simple project which exhibits this animation issue.
I create a view based ipad app
Add a toolbar to the top
and add two buttons to the main view: Animate and Nothing
The button that comes with the toolbar pops up a popover
The popover contains a single button, Animate, and some space.
Both Animate buttons are connected to a method of the main view controller
(see below).
When I touch the Animate in the main view, both the touched Animate button
and the Nothing button are animated.
When I touch the Animate in the popover, only the touched Animate button is
animated, not the Nothing button.
Question is: Why doesn't the Nothing button animate in all calls to the method?
- (IBAction) animateStuff: (id) sender
{
UIButton *b = (UIButton*)sender; // either one of the Animate buttons
[ UIView animateWithDuration: 0.25
delay: 0.01
options: UIViewAnimationOptionCurveEaseIn
animations: ^{
// move the Animate button
CGRect r = b.frame;
r.origin.x = r.origin.x + 10;
r.origin.y = r.origin.y + 5;
b.frame = r;
// resize the Nothing button
r = self.nothingButton.frame;
if( r.size.width == 400 )
{
r.size.width = 100;
r.size.height = 100;
}
else
{
r.size.width = 400;
r.size.height = 400;
}
self.nothingButton.frame = r;
}
completion: nil
];
}
Full project available on request (33Kb zip)
On 04/05/2011, at 01:53 , David Duncan wrote:
On May 3, 2011, at 3:40 AM, Brian Bruinewoud wrote:
Hi All,
self.view.alpha is animated but nothing at all happens to drawingVC.view.
My guess would be that 'drawingVC.view' isn't actually in a window anywhere.
Given your current and previous question however, I would posit that you are
mis-using UIViewControllers and possibly causing various other issues for
yourself (that said, I don't know why you get the results you do in your
other question).
I would highly recommend that you read the View Controller Programming Guide,
especially the section on view controller containment (spoiler alert: what
you are doing is not supported). If you want to be able to load arbitrary
views from nibs to add to a view managed by a view controller, the
recommendation is to use an NSObject subclass to own the view and UINib to
load the nib.
--
David Duncan
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Re: image rotation
Several years ago, I wrote this sample code project:
http://developer.apple.com/samplecode/Transformed_Image/index.html
It demonstrates the use of NSAffineTransform to rotate, scale, and shear images.
-jcr
On Apr 29, 2011, at 7:48 AM, Amy Heavey wrote:
Hi,
I'm trying to generate a new image that is made up of a combination of other
images.
As I iterate over the array holding the images I want to do is...
- place the componant image in the new canvas at a certain point (150,187)
- rotate the componant image by a certain value (calculated previously)
I don't mind how the image fits in the new canvas, it doesn't have to be
completely within it.
I think I need to use NSAffineTransform?
I was using drawinrect previously for non-rotated movement.
Do I need to draw the componant image to the canvas first then rotate it?
The code I have at the moment is
[code]
//calc rotation
double rotation = 360 / ki;
double rotateby = rotation;
//set coordinates to x,y - 150,187 to start
float x = 150;
float y = 187;
//for each image
NSEnumerator *imageLoop = [kitImages objectEnumerator];
NSString *imgPath;
while ((imgPath = [imageLoop nextObject])) {
NSImage *img = [[NSImage
alloc]initWithContentsOfFile:imgPath];
//rotate image
//apply image to view
[targetImage lockFocus];
//[img drawInRect:NSMakeRect(x,y,xb,yb)
fromRect:NSMakeRect(150,150,0,0) operation:NSCompositeCopy fraction:1];
//set new rotation
rotation = rotation+rotateby;
[/code]
I've tried looking at some of the samples, but they seem to be cover rotating
in place and resizing which is more complicated than I'm looking for. I'm
expecting to effectively have the componant images fan out on the canvas.
If anyone could help me with the process I'd be grateful, do I have to create
a intermediary image to make the rotated image square?
Thanks,
Amy
Many Thanks
Amy Heavey
Willow Tree Crafts
www.willowtreecrafts.co.uk
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Converting a large project to GC
Apple's documentation states: The process of migrating a large project that uses reference counting can be difficult and error-prone—some patterns that work correctly with manual memory management will be incorrect after translation. In general, it is recommended that you use garbage collection only in new projects. If you already have a well-architected, well-understood application that uses reference counting, there should be little reason to migrate to GC Unfortunately we have a large project (think Apple's Aperture) that we're considering for migration to GC in order to reduce memory crashers and simplify memory management in the future. Has anyone tried converting a large project to GC? If YES was it successful and worth it? What were the main issues encountered during the conversion? Thanks!___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
L-shaped custom view in Cocoa?
Hi All! I need to make custom view in the form of letter L. How to do it? Thank you in advance, Vyacheslav. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
iOS nib weirdness...
I'm working on an app that uses a tab bar. I created a new nib to set up a view+controller and added a new tab item to the main nib that references the controller and the controller's nib, plus I filled in some basic functionality in the view controller. Since it's relevant, the controller's IBOutlets are IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; When I ran the app and used the new view's UI, I got an unexpected unrecognized selector exception when trying to access a custom method in _resultsTable. When I looked at their values in the debugger, I found that _resultsTable was an instance of UITableView, not MyTableView; and _searchActivityIndicator and _searchBar were both nil. I thought that there could be a missing class issue, but the MyTableView class is implemented since creating a test MyTableView instance in code works just fine. That still doesn't explain the other nil values since all three views were wired up in IB: the view controller shows the views connected to the outlets and the views show themselves as connected. Grasping at straws, I trashed the build results and did a clean build, and even re-launched Xcode, with no difference in behavior. I could very well be doing something dumb but I'm not exactly sure where to look since I've (correctly) set up this same sort of thing before and it worked fine. BTW, I'm using Xcode 3.2.6 + iOS SDK 4.3. Any ideas? steve ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
On May 4, 2011, at 8:41 AM, Vyacheslav Karamov wrote: I need to make custom view in the form of letter L. How to do it? You don't need to. You may think you do, but you don't. And you can't. Just make a regular rectangular view and only draw in the parts you want to. Regards, Ken ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
All views are rectangular in shape. You can restrict drawing and responding to events to an L-shaped area, but the view itself will still be a rectangle. On May 4, 2011, at 6:41 AM, Vyacheslav Karamov wrote: I need to make custom view in the form of letter L. How to do it? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
Is your viewController a subclass of UITableViewController? Then your nib is not loaded. UITableViewController is broken. It does not keep the contract of initWithNibName:bundle: atze Am 04.05.2011 um 16:00 schrieb Steve Christensen: I'm working on an app that uses a tab bar. I created a new nib to set up a view+controller and added a new tab item to the main nib that references the controller and the controller's nib, plus I filled in some basic functionality in the view controller. Since it's relevant, the controller's IBOutlets are IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; When I ran the app and used the new view's UI, I got an unexpected unrecognized selector exception when trying to access a custom method in _resultsTable. When I looked at their values in the debugger, I found that _resultsTable was an instance of UITableView, not MyTableView; and _searchActivityIndicator and _searchBar were both nil. I thought that there could be a missing class issue, but the MyTableView class is implemented since creating a test MyTableView instance in code works just fine. That still doesn't explain the other nil values since all three views were wired up in IB: the view controller shows the views connected to the outlets and the views show themselves as connected. Grasping at straws, I trashed the build results and did a clean build, and even re-launched Xcode, with no difference in behavior. I could very well be doing something dumb but I'm not exactly sure where to look since I've (correctly) set up this same sort of thing before and it worked fine. BTW, I'm using Xcode 3.2.6 + iOS SDK 4.3. Any ideas? steve ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/atze%40freeport.de This email sent to a...@freeport.de ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
Yes, the table view is typed as MyTableView in the xib. On May 4, 2011, at 7:21 AM, Evadne Wu wrote: Just a wild thought, but could you probably look into the (offending) XIB and make sure that the table view is of a custom class? -ev On May 4, 2011, at 22:00, Steve Christensen wrote: I'm working on an app that uses a tab bar. I created a new nib to set up a view+controller and added a new tab item to the main nib that references the controller and the controller's nib, plus I filled in some basic functionality in the view controller. Since it's relevant, the controller's IBOutlets are IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; When I ran the app and used the new view's UI, I got an unexpected unrecognized selector exception when trying to access a custom method in _resultsTable. When I looked at their values in the debugger, I found that _resultsTable was an instance of UITableView, not MyTableView; and _searchActivityIndicator and _searchBar were both nil. I thought that there could be a missing class issue, but the MyTableView class is implemented since creating a test MyTableView instance in code works just fine. That still doesn't explain the other nil values since all three views were wired up in IB: the view controller shows the views connected to the outlets and the views show themselves as connected. Grasping at straws, I trashed the build results and did a clean build, and even re-launched Xcode, with no difference in behavior. I could very well be doing something dumb but I'm not exactly sure where to look since I've (correctly) set up this same sort of thing before and it worked fine. BTW, I'm using Xcode 3.2.6 + iOS SDK 4.3. Any ideas? steve ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
No, the view controller is a subclass of UIViewController and is being initialized via -initWithCoder:. On May 4, 2011, at 7:47 AM, Alexander Spohr wrote: Is your viewController a subclass of UITableViewController? Then your nib is not loaded. UITableViewController is broken. It does not keep the contract of initWithNibName:bundle: atze Am 04.05.2011 um 16:00 schrieb Steve Christensen: I'm working on an app that uses a tab bar. I created a new nib to set up a view+controller and added a new tab item to the main nib that references the controller and the controller's nib, plus I filled in some basic functionality in the view controller. Since it's relevant, the controller's IBOutlets are IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; When I ran the app and used the new view's UI, I got an unexpected unrecognized selector exception when trying to access a custom method in _resultsTable. When I looked at their values in the debugger, I found that _resultsTable was an instance of UITableView, not MyTableView; and _searchActivityIndicator and _searchBar were both nil. I thought that there could be a missing class issue, but the MyTableView class is implemented since creating a test MyTableView instance in code works just fine. That still doesn't explain the other nil values since all three views were wired up in IB: the view controller shows the views connected to the outlets and the views show themselves as connected. Grasping at straws, I trashed the build results and did a clean build, and even re-launched Xcode, with no difference in behavior. I could very well be doing something dumb but I'm not exactly sure where to look since I've (correctly) set up this same sort of thing before and it worked fine. BTW, I'm using Xcode 3.2.6 + iOS SDK 4.3. Any ideas? steve ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
On 4 May 2011, at 9:00 AM, Steve Christensen wrote: IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; When I ran the app and used the new view's UI, I got an unexpected unrecognized selector exception when trying to access a custom method in _resultsTable. When I looked at their values in the debugger, I found that _resultsTable was an instance of UITableView, not MyTableView; and _searchActivityIndicator and _searchBar were both nil. Have you verified that 1) you are inspecting the outlets in the debugger at a time after the NIB has loaded and the connections are made? -viewDidLoad would be favorite. 2) Interface Builder knows that your table view is a MyTableView? Check the identity inspector (third tab in the Utility area of Xc4, last tab (as I remember it) in the floating inspector in IB/Xc3. 3) the other two outlets are actually connected? 4) File's Owner in the XIB for the controller is actually of the controller's class? 5) you are not instantiating your controller twice? The MainWindow.xib template for tab-based targets does it; do you do it elsewhere yourself? 6) the class of the controller for that tab (in MainWindow.xib) is declared to be of the right class? — F ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Request for beta testers/feedback for programmer utility [please reply off-list]
All, I've written a small-ish mostly background clipboard/macro type utility and was wondering if anyone would be interested in helping me beta test/provide feedback. It's simply a way to store and insert frequently used snippets of text in a very fast manner. I wanted something to pop in, give me the snippets of text I need, then vanish so I can get back to work. I know there are existing utilities for this, but they didn't quite meet my needs. I know that it's general purpose, but it's most glaringly obvious as a programmer utility tool, so I figured I'd go to the source and see if I could recruit some more programmers to take a look at it. It's great for stubbing out code and inserting frequently used blocks of text. I'm intentionally being a bit vague here because I don't want to accidentally clutter up the list with lots of discussion traffic on my specific thing. But if anyone'd be interested in taking a look and helping me make sure it's properly fleshed out, looks useful, etc, then please reply off list and I'll hook you up. Thanks, -Jim. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
On May 4, 2011, at 9:00 AM, Steve Christensen wrote: I'm working on an app that uses a tab bar. I created a new nib to set up a view+controller and added a new tab item to the main nib that references the controller and the controller's nib, plus I filled in some basic functionality in the view controller. Since it's relevant, the controller's IBOutlets are IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; First step: Don't prepend your ivars with underscores. From http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CodingGuidelines/Articles/NamingBasics.html, and I quote: • Avoid the use of the underscore character as a prefix meaning private, especially in methods. Apple reserves the use of this convention. Use by third parties could result in name-space collisions; they might unwittingly override an existing private method with one of their own, with disastrous consequence. You may be seeing one of those disastrous consequences Glenn Andreas gandr...@gandreas.com The most merciful thing in the world ... is the inability of the human mind to correlate all its contents - HPL ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
On May 4, 2011, at 8:02 AM, Fritz Anderson wrote: On 4 May 2011, at 9:00 AM, Steve Christensen wrote: IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; When I ran the app and used the new view's UI, I got an unexpected unrecognized selector exception when trying to access a custom method in _resultsTable. When I looked at their values in the debugger, I found that _resultsTable was an instance of UITableView, not MyTableView; and _searchActivityIndicator and _searchBar were both nil. Have you verified that 1) you are inspecting the outlets in the debugger at a time after the NIB has loaded and the connections are made? -viewDidLoad would be favorite. Yes, I put a breakpoint in -viewDidLoad, as well as just letting it run and crash, and then look at the instance variables in the debugger. At both places, the table is a UITableView and the other two outlets are nil. 2) Interface Builder knows that your table view is a MyTableView? Check the identity inspector (third tab in the Utility area of Xc4, last tab (as I remember it) in the floating inspector in IB/Xc3. Yes, the Type field in the xib file's main window, as well as the Class field in the inspector window, show the type as MyTableView. 3) the other two outlets are actually connected? Yes, the outlets tab in the inspector window shows the file owner/view controller's outlets to be all wired up. And moving the mouse over those items highlights the corresponding views in the main xib window. 4) File's Owner in the XIB for the controller is actually of the controller's class? Yes. 5) you are not instantiating your controller twice? The MainWindow.xib template for tab-based targets does it; do you do it elsewhere yourself? No, my MainWindow.xib has a tab bar controller that has a tab item referencing this view controller and its corresponding nib file. 6) the class of the controller for that tab (in MainWindow.xib) is declared to be of the right class? Yes, and the controller is being instantiated as expected. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
Yes, I understand, I meant want to know how to restrict drawing and responding to events to L-shaped area. 04-May-11 17:38, Steve Christensen пишет: All views are rectangular in shape. You can restrict drawing and responding to events to an L-shaped area, but the view itself will still be a rectangle. On May 4, 2011, at 6:41 AM, Vyacheslav Karamov wrote: I need to make custom view in the form of letter L. How to do it? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS nib weirdness...
On May 4, 2011, at 8:17 AM, glenn andreas wrote: On May 4, 2011, at 9:00 AM, Steve Christensen wrote: I'm working on an app that uses a tab bar. I created a new nib to set up a view+controller and added a new tab item to the main nib that references the controller and the controller's nib, plus I filled in some basic functionality in the view controller. Since it's relevant, the controller's IBOutlets are IBOutlet MyTableView* _resultsTable; IBOutlet UIActivityIndicatorView* _searchActivityIndicator; IBOutlet UISearchBar* _searchBar; First step: Don't prepend your ivars with underscores. From http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CodingGuidelines/Articles/NamingBasics.html, and I quote: • Avoid the use of the underscore character as a prefix meaning private, especially in methods. Apple reserves the use of this convention. Use by third parties could result in name-space collisions; they might unwittingly override an existing private method with one of their own, with disastrous consequence. You may be seeing one of those disastrous consequences I did think about that. I renamed the ivars to something completely different, rewired the xib and tried it out with no difference in behavior. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
On May 4, 2011, at 10:21 AM, Vyacheslav Karamov wrote: Yes, I understand, I meant want to know how to restrict drawing and responding to events to L-shaped area. You are responsible for writing the drawing code and the code which responds to events. In your drawing code, just don't draw in the part which isn't in the L shape. If you prefer, you can clip the graphics context to enforce that. See the -[NSBezierPath addClip] method. For events which have location associated with them, you should check the location and just invoke super for any which fall outside of the L shape. Regards, Ken ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Nested NSCollectionView scroll weirdness
Hello all, I'm having kind of troubles with embedded collection views. I'm displaying a list of items vertically, each of these items may have subitems i list in another collection view, this time horizontally. Everything fine so far, the NSCollectionViewItems get loaded well, for both the parent list and the child lists. Now, a sublist's too long to be displayed, the horizontal scroller appears but scrolling won't do anything on this sublist. I subclassed NSScroller + NSScrollView and stepped the code, and all I can tell to this point, is that the embedded scrollview receives events (especially the scrollWheel: message), but, it does nothing. The document rect is desperatly the same. I tried to put an NSTextView instead of the nested collectionview and the same behaviour is shown. So i don't even know whether it's a scrollview or collection view issue. I'd be ready to write a hand made collectionview if i was sure i won't get the same problem because of embedded scrollviews. Thanks in advance. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
You could either use a path or a pair of rectangles to clip drawing and test for events such as a mouseDown or tap. You'll need to calculate the dimensions based on the current size of the view. On May 4, 2011, at 8:21 AM, Vyacheslav Karamov wrote: Yes, I understand, I meant want to know how to restrict drawing and responding to events to L-shaped area. 04-May-11 17:38, Steve Christensen пишет: All views are rectangular in shape. You can restrict drawing and responding to events to an L-shaped area, but the view itself will still be a rectangle. On May 4, 2011, at 6:41 AM, Vyacheslav Karamov wrote: I need to make custom view in the form of letter L. How to do it? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSClassFormString returning nil.
Hello all. Im sorry if this isn't the right place to post this, I wasn't sure if xcode list obj-c list or this one, so I decided this one. I have created a Static Library which makes use of another library (cocos2d to be more specific), then I created a project that will use that library i created. When I drag-drop the library to that project well I got linker errors. Finally after working a little bit with that problem I ended up creating a wrokspace and dragging there both projects (library and final project), then I configured the link libraries, and voila it worked. NOT JUST YET!, it was ok until in the library i created I needed to use a NSClassFromString, then nightmare began again. It returned me nil all the time. I checked that the class names were ok, but nothing. So I did a research and found a technical ticket form apple saying that when using this class from within a static library there is a bug and I may need to add to the other linker flags a -all_load or -force_load I checked my library build settings and I saw that -ObjC flag was there, so I added -all_load , recompile library, recompile final project test and nothing... So then I thought i may need to put those flag in the final product build settings, I did so and OMG again linker problems, file now founds etc.. What can I do? Thx in advance for any help provided and if this isn't the right list to post I apologize please let me know to which one should I write. Gustavo ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Enable a button once text is added to textfield
In IB set the button to be disabled. Set yourself up a delegate for the text field and let the delegate respond to -(void)controlTextDidChange:(NSNotification *)aNotification It is also convenient if the delegate has a pointer to the button as well. When the delegate receives this notification you can then inspect what the user has typed and set the button state accordingly. Peter ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSClassFormString returning nil.
On May 4, 2011, at 09:12, Gustavo Pizano wrote: linker problems Vagueness like this makes it hard to help you. Sometimes the actual error messages are important in deciding where to look for a solution. What can I do? I'd very seriously suggest you don't use a static library at all. It really doesn't provide you with any benefits, so you may as well include the source code directly instead. The whole point -- well, *a* whole point -- of a static library (in traditional C terms) is to allow you to link just those parts that are referenced by your client application, without having to figure it out for yourself. This doesn't work very well in Objective-C, because the language's dynamism makes it impossible in general to determine what's referenced at link time. If you have other reasons for library-izing your Objective-C code, a framework is a much better choice, probably. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
On May 4, 2011, at 08:38, Ken Thomases wrote: For events which have location associated with them, you should check the location and just invoke super for any which fall outside of the L shape. There's also -[NSView hitTest] for customizing the behavior at a slightly higher lever than redirecting events. This might help an odd-shaped view be a better citizen when placed in a window with other views. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSClassFormString returning nil.
On Wed, May 4, 2011 at 10:11 AM, Quincey Morris quinceymor...@earthlink.net wrote: I'd very seriously suggest you don't use a static library at all. It really doesn't provide you with any benefits, so you may as well include the source code directly instead. Static ObjC libraries are still very useful on iOS, because you can't load code dynamically. It's just so much easier and faster to split our apps up into seven or eight static libraries rather than our old method of compiling all the source into one binary at the same time. Since we reuse frameworks on the desktop and on iOS, this is a much more natural solution. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSClassFormString returning nil.
Quincey Hello and thx for the reply I need to use the a library because its a iOS project so no framework, and also because I will be reusing the code in the lib for many other apps not just this one Im making.. So right now I have the following set up: On my Library Project: Note: By nothing I mean empty no value 2 Targets: -myLibrary : Library Search Paths : nothing Other Link Flags : nothing Copy Headers: As Public : All my Headers. -cocos2d cocos2d lib was easily configured I have done it before for other UIKit apps I compile this project without problem and it compiles. Now I created my Final app that will use my library I made a workspace where I put the project and the project that contains the library, both are there. -Added the libraries (cocos, myLib) to the project and then link them to the app. Header Search Path : Path to the headers of my library Other Link Flags : -ObjC -all_Load Now in my app delegate I have the line #import IADTravelEngine.h ... .. IADTEDirector * dir = [IADTEDirector sharedDirector]; and I get that IADTravelEngine.h No such a file. I dunno what I did before to make it work (Link) and it was working until I used the NSClassDFromString then I started modifying things and now it doesnt link again. :S Any help? Thx Gustavo On May 4, 2011, at 7:11 PM, Quincey Morris wrote: On May 4, 2011, at 09:12, Gustavo Pizano wrote: linker problems Vagueness like this makes it hard to help you. Sometimes the actual error messages are important in deciding where to look for a solution. What can I do? I'd very seriously suggest you don't use a static library at all. It really doesn't provide you with any benefits, so you may as well include the source code directly instead. The whole point -- well, *a* whole point -- of a static library (in traditional C terms) is to allow you to link just those parts that are referenced by your client application, without having to figure it out for yourself. This doesn't work very well in Objective-C, because the language's dynamism makes it impossible in general to determine what's referenced at link time. If you have other reasons for library-izing your Objective-C code, a framework is a much better choice, probably. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSClassFormString returning nil.
I found why the file not found.. I had the header path wrong.. now its ok.. im gonna try to see if the NSClassFromString works or what... On May 4, 2011, at 7:31 PM, Gustavo Pizano wrote: Quincey Hello and thx for the reply I need to use the a library because its a iOS project so no framework, and also because I will be reusing the code in the lib for many other apps not just this one Im making.. So right now I have the following set up: On my Library Project: Note: By nothing I mean empty no value 2 Targets: -myLibrary : Library Search Paths : nothing Other Link Flags : nothing Copy Headers: As Public : All my Headers. -cocos2d cocos2d lib was easily configured I have done it before for other UIKit apps I compile this project without problem and it compiles. Now I created my Final app that will use my library I made a workspace where I put the project and the project that contains the library, both are there. -Added the libraries (cocos, myLib) to the project and then link them to the app. Header Search Path : Path to the headers of my library Other Link Flags : -ObjC -all_Load Now in my app delegate I have the line #import IADTravelEngine.h ... .. IADTEDirector * dir = [IADTEDirector sharedDirector]; and I get that IADTravelEngine.h No such a file. I dunno what I did before to make it work (Link) and it was working until I used the NSClassDFromString then I started modifying things and now it doesnt link again. :S Any help? Thx Gustavo On May 4, 2011, at 7:11 PM, Quincey Morris wrote: On May 4, 2011, at 09:12, Gustavo Pizano wrote: linker problems Vagueness like this makes it hard to help you. Sometimes the actual error messages are important in deciding where to look for a solution. What can I do? I'd very seriously suggest you don't use a static library at all. It really doesn't provide you with any benefits, so you may as well include the source code directly instead. The whole point -- well, *a* whole point -- of a static library (in traditional C terms) is to allow you to link just those parts that are referenced by your client application, without having to figure it out for yourself. This doesn't work very well in Objective-C, because the language's dynamism makes it impossible in general to determine what's referenced at link time. If you have other reasons for library-izing your Objective-C code, a framework is a much better choice, probably. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: L-shaped custom view in Cocoa?
You can create it from two rectangular views, perhaps rotating the one, depending on your needs. Regards, Bertil___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSClassFormString returning nil.
Hello again, im really wondering if this is the right list, but anyway if you don't mind please dont kill me. :P If I take out the linker flags it compiles bu the NSClassFromString doesn't work if I put the flags -ObjC and -all_load the I get this problem: ld: duplicate symbol _OBJC_IVAR_$_CCAction.originalTarget_ in /Users/GustavPicora/Library/Developer/Xcode/DerivedData/AfrikaWS-hbbkzgjulqurwhepbahwnbcsrcun/Build/Products/Debug-iphonesimulator/libcocos2d libraries.a(CCAction.o) and /Users/GustavPicora/Library/Developer/Xcode/DerivedData/AfrikaWS-hbbkzgjulqurwhepbahwnbcsrcun/Build/Products/Debug-iphonesimulator/libIADTravelEngine.a(CCAction.o) for architecture i386 collect2: ld returned 1 exit status Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/llvm-gcc-4.2 failed with exit code 1 :S :S... thx G. On May 4, 2011, at 7:38 PM, Gustavo Pizano wrote: I found why the file not found.. I had the header path wrong.. now its ok.. im gonna try to see if the NSClassFromString works or what... On May 4, 2011, at 7:31 PM, Gustavo Pizano wrote: Quincey Hello and thx for the reply I need to use the a library because its a iOS project so no framework, and also because I will be reusing the code in the lib for many other apps not just this one Im making.. So right now I have the following set up: On my Library Project: Note: By nothing I mean empty no value 2 Targets: -myLibrary : Library Search Paths : nothing Other Link Flags : nothing Copy Headers: As Public : All my Headers. -cocos2d cocos2d lib was easily configured I have done it before for other UIKit apps I compile this project without problem and it compiles. Now I created my Final app that will use my library I made a workspace where I put the project and the project that contains the library, both are there. -Added the libraries (cocos, myLib) to the project and then link them to the app. Header Search Path : Path to the headers of my library Other Link Flags : -ObjC -all_Load Now in my app delegate I have the line #import IADTravelEngine.h ... .. IADTEDirector * dir = [IADTEDirector sharedDirector]; and I get that IADTravelEngine.h No such a file. I dunno what I did before to make it work (Link) and it was working until I used the NSClassDFromString then I started modifying things and now it doesnt link again. :S Any help? Thx Gustavo On May 4, 2011, at 7:11 PM, Quincey Morris wrote: On May 4, 2011, at 09:12, Gustavo Pizano wrote: linker problems Vagueness like this makes it hard to help you. Sometimes the actual error messages are important in deciding where to look for a solution. What can I do? I'd very seriously suggest you don't use a static library at all. It really doesn't provide you with any benefits, so you may as well include the source code directly instead. The whole point -- well, *a* whole point -- of a static library (in traditional C terms) is to allow you to link just those parts that are referenced by your client application, without having to figure it out for yourself. This doesn't work very well in Objective-C, because the language's dynamism makes it impossible in general to determine what's referenced at link time. If you have other reasons for library-izing your Objective-C code, a framework is a much better choice, probably. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSClassFormString returning nil.
On May 4, 2011, at 10:19, Kyle Sluder wrote: Static ObjC libraries are still very useful on iOS, because you can't load code dynamically. It's just so much easier and faster to split our apps up into seven or eight static libraries rather than our old method of compiling all the source into one binary at the same time. Since we reuse frameworks on the desktop and on iOS, this is a much more natural solution. iOS? Just a fad. No need to get excited about it. ;) On May 4, 2011, at 10:31, Gustavo Pizano wrote: I need to use the a library because its a iOS project so no framework, and also because I will be reusing the code in the lib for many other apps not just this one Im making.. I think you missed my point. You can reuse the *source code* in all the apps, simply by dropping it into your Xcode projects much the same way you would otherwise drop a static library in. Kyle makes a good point, though (which I meant to say in my previous post but forgot). If there are multiple developers working on multiple projects, it may be convenient for housekeeping reasons to package shared code as libraries. If you're in a less complicated working environment (I note that Kyle says we but you say I), then the advantages aren't as clear. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
[NSMenu _enableItem} crash
Reliably: Launch project and get first document window. Close document Main Menu file open second document. Close document Click anywhere on the main menu and the project crashes. Most of the time the stack ends with: 0 objc_msgSend 1 stub helpers 2 [NSMenu _enableItem] Occasionally it consists of 0 objc_msgSend 1 ??? (or a reasonable facsimile) After reading through some threads on this I thought my validation stuff may be an issue, so I commented it out. It made no difference. Because the crash occurs no matter where on the menu I click, I wondered if I was accidentally releasing the mainMenu. I'm not. Any help with this problem would be greatly appreciated. Tony ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: [NSMenu _enableItem} crash
Most of the time the stack ends with: 0 objc_msgSend 1 stub helpers 2 [NSMenu _enableItem] Occasionally it consists of 0 objc_msgSend 1 ??? (or a reasonable facsimile) After reading through some threads on this I thought my validation stuff may be an issue Likely menu validation is the problem- not your validation code itself, but the objects responsible. I bet one of your menus/items has a target or delegate that has deallocated (something set by the closed document/window). Try running your application with NSZombieEnabled=YES to check. ~Martin ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: [NSMenu _enableItem} crash
On 4 May 2011, at 3:36 PM, Tony Cate wrote: Most of the time the stack ends with: 0 objc_msgSend 1 stub helpers 2 [NSMenu _enableItem] Occasionally it consists of 0 objc_msgSend 1 ??? (or a reasonable facsimile) After reading through some threads on this I thought my validation stuff may be an issue, so I commented it out. It made no difference. Because the crash occurs no matter where on the menu I click, I wondered if I was accidentally releasing the mainMenu. I'm not. You're most likely dealing with an already-released object that was expected to be alive still. Setting NSZombieEnabled to YES in your executable's environment variables will tell you what the problem object is, if that's the case. Or, run your application with the Object Allocations instrument in the Instruments profiling application, with zombie detection enabled. You can get a history of the pointer, which will tell you much more. For deeper knowledge, see the famous blog post So you crashed in objc_msgSend(), http://www.sealiesoftware.com/blog/archive/2008/09/22/objc_explain_So_you_crashed_in_objc_msgSend.html — F ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
how can I copy from another app?
I know this has been asked a bajillion times before, yet here we are. So it turns out that my simple little applescript to copy in from another app was ineffective. Lots more digging around led me to create this: tell application Xcode activate tell application System Events tell application process Xcode set frontmost to true keystroke c using command down end tell end tell display dialog (the clipboard) set foo to path to frontmost application display dialog foo end tell which is currently hardwired to Xcode and has a couple of dialogs for debugging purposes. Yes, yes, I know that blissfully assuming that command-C performs a copy operation is less than ideal. Best option I've seen so far. Here's the annoying bit - this works just fine when run from the Script Editor. But when I run it within my app by firing it off via an NSAppleScript call, it fails and copies no text. I even tried saving it as a separate script and invoking it via osascript and had no luck. Again, that works just fine on the command line calling it directly, but not from within the app. I'm utterly stumped. Is there something simple I'm missing? An option to turn on? Is there some other approach I should try instead? -Jim ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
RE: how can I copy from another app?
I have not been on this list that long to have heard this abajillion times and without knowing what others have said, I can surmise that their replies where no less perplexed with the question but Why? The copy and past function is a user interface object, designed to aid in process flow. It is not designed for any kind of IPC (Inter Process Communication) that one would want to use (unless your trying to make yourself go insane). In any case, if you REALLY want too... You should write a program that uses the NSPasteboard object, and registers for types that you want to process. I bet there is an update signal you can callback on, so when anything gets pasted to the server you know about it, and from the code bellow it appears like you want to use text, which is a standard type. http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSPasteboard_Class/Reference/Reference.html http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/PasteboardGuide106/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008099 But if you have asked this here before, I'm sure someone has already told you all this? Date: Wed, 4 May 2011 16:46:04 -0500 From: j...@jimandkoka.com To: cocoa-dev@lists.apple.com Subject: how can I copy from another app? I know this has been asked a bajillion times before, yet here we are. So it turns out that my simple little applescript to copy in from another app was ineffective. Lots more digging around led me to create this: tell application Xcode activate tell application System Events tell application process Xcode set frontmost to true keystroke c using command down end tell end tell display dialog (the clipboard) set foo to path to frontmost application display dialog foo end tell which is currently hardwired to Xcode and has a couple of dialogs for debugging purposes. Yes, yes, I know that blissfully assuming that command-C performs a copy operation is less than ideal. Best option I've seen so far. Here's the annoying bit - this works just fine when run from the Script Editor. But when I run it within my app by firing it off via an NSAppleScript call, it fails and copies no text. I even tried saving it as a separate script and invoking it via osascript and had no luck. Again, that works just fine on the command line calling it directly, but not from within the app. I'm utterly stumped. Is there something simple I'm missing? An option to turn on? Is there some other approach I should try instead? -Jim ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/shashaness%40hotmail.com This email sent to shashan...@hotmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: how can I copy from another app?
and without knowing what others have said, I can surmise that their replies where no less perplexed with the question but Why? This gloriously ugly hack isn't the correct why question - the correct why question is why do I even need to do it? I want to be able to copy the current selection from another app so I can use it in mine w/o requiring the user to do the copy first themselves. The standard hacks when slogging through the net about this are to either use an Apple Script along these lines (some advocate opening up the Edit Menu then selecting the Copy item, which is comparably fragile), or packing up and sending in Apple Events to emulate the keypress. As I understand it, those are fragile for different reasons. But other than resorting to hacks like this there is, AFAIK, no way to get the selected text from any other arbitrary app. If you have a better solution, I'd love to hear it. Using the pasteboard isn't the right approach at all, since there's no data on the pasteboard as of yet. I'd need to get it onto there before it can be copied off. And no, before it's suggested, using a service isn't appropriate in this case for several reasons, mainly that I want to invoke my app with some input (or no input), and then conditionally provide output. I'd love to use a service instead, but AFAIK it won't bend to those constraints. So back to my original question and issue - this hack works great when run from Script Editor, but when invoked via NSAppleScript. It will -sometimes- work if I embed a standalone script into my app and shell out to it. Oddly enough, I discovered quite by accident that if I left both in there (both invoking via NSAppleScript AND shelling out to the external one), it'll always work. But that's a hack bordering on the insane. I assumed that it was somehow a timing issue and that by doing it twice I was slowing things down enough for it not to trigger, but I wasn't able to fix it by adding delays into my app anywhere. The two calls is the only approach I've got functional right now. -Jim ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
update a tableView from a different class
Hi,
I have a singleton class which manages a tableView.
In the UI everything works fine. I can delete entries, edit entries and the
table gets updated properly.
Now I have another class which manages the entries of a dropdown menu.
Now when an item of this dropdown menu is getting pressed I want to change
something in my tableView – so the table should get updated.
So the singleton class that manages my tableview has a method -
(void)updateView:
- (void)updateView {
[content removeObjectAtIndex:1];
[table reloadData];
[table deselectAll:self];
}
and when the menuitem is pressed the following is invoked (in a different
class):
prefShow = [Preferences sharedPrefsWindowController]; ( - this is my
singleton)
[prefShow updateView];
Everything works fine – the updateView method is called and the NSMutableArray
(content) is also updated properly.
However nothing changes in the table.
[table reloadData] seems to have no effect.
But why?
It works for other methods that are linked to
IBOutlets...___
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Re: L-shaped custom view in Cocoa?
On Wed, May 4, 2011 at 1:09 PM, Shawn Bakhtiar shashan...@hotmail.com wrote: Actually you only need one view. Subclass it, and over ride the draw method [[NSColor clearColor] set] NSFillRect(...) - the size you want to clear out. Don't do this. It doesn't do what you think it does. The window only has one backing store bitmap. All normal views are drawn into this bitmap in order. So filling a rect with clearColor actually nukes the background of the window. It'll draw as a black rectangle on your screen. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: update a tableView from a different class
On Wed, May 4, 2011 at 5:52 PM, Martin Batholdy batho...@googlemail.com wrote: I have a singleton class which manages a tableView. In the UI everything works fine. I can delete entries, edit entries and the table gets updated properly. How is the table view getting its data. If it's through bindings, I bet it's because you're not mutating the array in a KVO-compliant way. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: how can I copy from another app?
On 05/05/2011, at 10:01 AM, Jim Thomason wrote: This gloriously ugly hack isn't the correct why question - the correct why question is why do I even need to do it? No, it is the right why question. When something is this hard, then you must clearly be fighting the designed architecture of the OS. And the reason you're fighting it is because you have arrived at a use-case it wasn't designed to handle, and the reason it wasn't designed to handle it is because the use-case is wrongly conceived. That's why you're being urged to go back to basics and reconsider that, rather than provided with a how-to for the case you HAVE proposed. I want to be able to copy the current selection from another app so I can use it in mine w/o requiring the user to do the copy first themselves So why? If a service can't work (this is the designed-in solution in the architecture for what appears to be the use-case you've outlined) then certainly the solution you're looking at is wrong-headed at best. set frontmost to true keystroke c using command down Yes, yes, I know that blissfully assuming that command-C performs a copy operation is less than ideal. Best option I've seen so far. This makes so many assumptions, it's not funny. Assuming that command-c does indeed pertain to the 'Copy' menu item, what does this even achieve? It merely sends a 'copy:' action to First Responder (even then that assumes that the 'Copy' menu item hasn't been wired to a different target and action, which would be perfectly legitimate). The chain of response to command-c is assumed to be - with question marks where it quite reasonably might not - : cmd-c - ? - Copy menu item - ? - [First Responder copy:] - ? - ( Implemented? Text object? valid selection? usable data type? )- ? - [NSPasteboard putData:] First Responder could be any object whatsoever within your user-interface, and it changes over time. There is no general solution for forcing any particular object or type of object to be First Responder from outside the app, unless it supports explicit scripting to do so. FR could be an object that doesn't respond to -copy: (the menu item would be typically greyed out in this case). If it does respond to -copy:, the implementation of that method could be anything whatsoever. Again, typically, but by no means necessarily, it might ultimately respond by placing data on to the general NSPasteboard. But then again, it might not - an app is free to implement copy however it pleases (though admittedly NOT using NSPasteboard would usually be perverse, but an app's definition of what it means to 'Copy' is certainly its own). The problem is, you need an app to put data onto a pasteboard (which from another apps perspective is at least sensible - pasteboards are an inter-application communication device), but between invoking the menu command 'Copy' and putting data on the pasteboard is a potentially vast swamp of unknown code to cross with no known outcome. Put another way, you are using a View behaviour to trigger a distant Data Model response, with who-knows-what result? The only reliable way to get an app to put data on a pasteboard is to invoke a service for which the app has opted in (even then, you can't push a service at an app, it has to pull the service into operation). So for the general case of any app, that isn't reliable. If an app is willing to share its data to the outside world, the best way for it to do that is to be scriptable, and to define specific script events to permit that in conjunction with other specific script events to determine exactly which object is being targeted. If the app's designer didn't build that in, you're stuck. There is no general solution for extracting data from an arbitrary app. You simply cannot do what you are attempting, at least as far as the problem has been defined. So, the only fruitful way forward is to redefine the problem, or give up and work on something more productive. --Graham ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: update a tableView from a different class
On 05.05.2011, at 03:06, Kyle Sluder wrote: How is the table view getting its data. If it's through bindings, I bet it's because you're not mutating the array in a KVO-compliant way. Well, I dont use an ArrayController or something like this in the interface builder. and I implemented all the tableview methods manually. So I think I still don't understand the concept of bindings. Therefore I am not sure ... ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: update a tableView from a different class
On 05/05/2011, at 10:52 AM, Martin Batholdy wrote:
- (void)updateView {
[content removeObjectAtIndex:1];
[table reloadData];
[table deselectAll:self];
}
and when the menuitem is pressed the following is invoked (in a different
class):
prefShow = [Preferences sharedPrefsWindowController]; ( - this is my
singleton)
[prefShow updateView];
Everything works fine – the updateView method is called and the
NSMutableArray (content) is also updated properly.
However nothing changes in the table.
[table reloadData] seems to have no effect.
Have you checked to see whether removeObjectAtIndex:1 actually succeeds? If the
index is out of bounds, an exception will be thrown and -reloadData will never
be reached. You can easily check that in the debugger. It looks suspicious that
you are hard-coding an index value for an array whose contents are variable.
If you always want to remove the first object, the correct index is 0, but even
that will fail if the array is empty. If you always want to remove the last
object, use [NSArray lastObject], which will return nil if the array is empty.
In general, naming a method -updateView that also removes an object from
content is setting yourself up for buggy behaviour. Either separate out the
removal from the update, or else rename the method so it's clear what it
actually does.
--Graham
___
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Re: update a tableView from a different class
On 05.05.2011, at 03:35, Graham Cox wrote: Have you checked to see whether removeObjectAtIndex:1 actually succeeds? If the index is out of bounds, an exception will be thrown and -reloadData will never be reached. You can easily check that in the debugger. It looks suspicious that you are hard-coding an index value for an array whose contents are variable. If you always want to remove the first object, the correct index is 0, but even that will fail if the array is empty. If you always want to remove the last object, use [NSArray lastObject], which will return nil if the array is empty. In general, naming a method -updateView that also removes an object from content is setting yourself up for buggy behaviour. Either separate out the removal from the update, or else rename the method so it's clear what it actually does. —Graham Yes, I checked this with an NSLog statement. The 1 is also only for testing purpose and the array has always more than two entries. So [table reloadData]; gets executed but has no effect ... ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: update a tableView from a different class
On 05/05/2011, at 11:40 AM, Martin Batholdy wrote: So [table reloadData]; gets executed but has no effect ... Well, it definitely does have an effect, just not the one that you are assuming. Show the code for your data source. How does the table get its data from content? Set a breakpoint in -tableView:objectValueForTableColumn:row: and check it gets called after -reloadData has been called (it might be deferred until the next event cycle - I forget whether that's the case or whether the reload is synchronous with -reloadData). --Graham ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
