can't change UINavigationBar class/instance, this makes sense?
I'm forced to use IB?
Since we've come around to file an ER then an appropriate question seems to
be what are you trying to accomplish by subclassing the UINavigationBar?
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If you don't turn GC on, then you likely don't have it on. Check your
project settings, as most if the project templates do not enable GC.
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On Dec 8, 2009, at 3:52 PM, Henri Häkkinen hen...@henuxsoft.com
wrote:
On Dec 8, 2009, at 6:42 PM, David Duncan wrote
On Dec 5, 2009, at 12:02 AM, Zephyroth Akash wrote:
How do I get the class-code definition of a motherboard controller ?
The first question that comes to mind is what do you need to know this
information for? Knowing would give us some idea of how to direct you further.
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or not, is this possible using the AudioToolbox framework, or any
other apple framework?
You would have a better chance of getting an answer on the CoreAudio-API list.
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coordinate system. When you specify a point
outside of that system, the results are undefined.
Specify something between 0,0 and 1,1.
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Please do
Your modifying an array that is being enumerated, which is illegal.
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On Nov 30, 2009, at 2:23 PM, Matt Neuburg m...@tidbits.com wrote:
To remove all sublayers from a layer, it is sufficient to set that
layer's
sublayers property to nil, so this code is completely
out clearly from
the documentation :).
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not pre-pend the 10-character app ID to your bundle identifier,
Xcode will do that automatically.
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commitAnimations];
Keep in mind that the call to UIGraphicsGetCurrentContext() here is
superfluous, and likely returning NULL. You can remove it without making any
change on the behavior of your code.
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by definition gives you
the keys, so you could just use for(id key in objects) {}
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the value you are
already passing).
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and @required to Protocols is meant to replace the
need for Informal Protocols. Categories are still very useful for adding
functionality to a class, as Protocols only allow you to create an interface,
not an implementation.
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On Nov 19, 2009, at 4:18 PM, Chris Idou wrote:
I've got a user getting the following crash, and I don't know what to make of
it because it all happens in Apple code. Has anyone got any advice?
What are you doing on Thread 2 ([FilerExecutor main])?
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a bit with 'hitTest' but in vain so far. Maybe I'm doing
something fundamentally wrong. Suggestions much appreciated.
What is wrong with -hitTest:? It is exactly what you should be using.
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context.
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On Nov 12, 2009, at 2:26 PM, Mirko Viviani wrote:
On 12/ago/2009, at 21.30, David Duncan wrote:
From my experience on Windows, DPIHeight and DPIWidth are properties of the
display device the image is drawn on, and not properties of the image
itself.
They are properties of both
specific reasons for going beyond that.
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'true'.
When you aren't certain if the code your running is yours, you can't
trust anything that it does, including telling you it is valid.
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Please
to. Then you can just run the
print job as usual and it will save the PDF to file.
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. For example, if you want to
check for a camera, UIImagePickerController has methods that allow you
to determine if one exists and what types of media it can handle.
If you could explain what you are trying to detect, I'm sure folks
could point you where you need to look.
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, rather than artificially only running on
devices that you think have the features you need.
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actually add anything to the language but a bit of syntactic sugar. It
isn't always appropriate to use, but there is no reason not to use it
when it is.
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for many other Foundation classes.
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path to all
libraries loaded, you can use that to determine where a particular
library is. It would probably also be useful to know what version of
Mac OS X this is occurring on.
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) in a GC environment.
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GCC_ENABLE_OBJC_GC[sdk=macosx10.6][arch=x86_64] = supported
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... what are you really trying to
detect by looking at the device type?
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must be 1.0. Values
are interpolated between the specified keytimes.
So your values are ascending, but they are not normalized to 0-1, and
for linear the first value is not 0.0.
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...
The only thing I can really recommend then is to simplify this down. I
have a working test case where I just coded a bunch of locations and
it works, so I can only think it is an issue with the data you've
supplied.
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.
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with another set of frames, but you may notice skips in the animation
at the points where your delegate is called for you to add the next
keyframe animation.
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by the UI agnostic DCAudioFileRecorder
class. You could just take that class with some small modifications
and use it directly in your Cocoa app...
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always be 100% black...
care to share some code?
If you think I've missed something vital here about masks please
point it out.
When using a plain image as a mask, the alpha value is the only thing
that should matter.
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On Sep 23, 2009, at 6:37 AM, Jakub Bednar wrote:
Does please anybody know, what am I missing? Maybe some explicit
specification that my plugin is 64-bit capable?
Did your build your plugin as GC-supported? 64-bit System Preferences
plugins need to be Garbage Collected.
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for the
drawing you do which should do exactly what you want.
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.
This is the Lighten blend mode (kCGBlendModeLighten). There doesn't
appear to be a corresponding NS composting mode, and I'm not sure why,
but you can easily get a CGContext from an NSGraphicsContext by asking
it for its graphicsPort, so this shouldn't be hard to integrate.
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would test this to see how bad it
actually is however.
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. More than likely you are
seeing a behavioral difference between 10.6 and 10.5 and we would need
to see the code that leads up to this crash to have a chance of
understanding what is going wrong.
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the tangy Xcode 3.2 goodness...). m.
You don't need to develop on 10.5, but you do need to test there to
ensure compatibility.
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SDK you should appear as if you don't
know about 10.6 and should get 10.5 behaviors where necessary.
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layer-backed hierarchy, then regardless of the actual ordering of the
views, the layer-backed hierarchy will draw over the non-layer-backed
hierarchy.
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will have better results with the CARenderer and
OpenGL readback techniques, although this method is rather more complex.
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you can't create an image that large, the
creation code fails and you get back a NULL CGImageRef instead.
The current best work around is to determine a proper bounding box for
the desktop and pass it for the given rect.
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)
toInterfaceOrientation
when the orientation is landscape the imagePicker is displayed in
portrait.
I have attempted to maunally rotate the view but I get
unpredictable image selection results. This is my rotation code:
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that PDFKit hides from you, so I would likely try to
solve your issues with PDFKit rather than rewriting your code to use
CG directly.
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Please do
On Sep 2, 2009, at 10:20 AM, Farooq zaman wrote:
Is it possible to detect phone-call event on iPhone? If yes, what
are the available APIs?
No, it is not. The only interaction possible with the Phone is to
request it to dial a number via a URL.
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something
along the lines of:
- (void) release
{
if( retainCount == 1 )
[self dealloc];
else
--retainCount;
}
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is via sysctlbyname using hw.model.
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will determine what build is
launched, and older projects will often have i386 as default (a newly
created project shows that x86_64 is shown by default on my machine).
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. In this case the replacement appears to be
CGDisplayCopyDisplayMode.
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is
not found in protocol(s).
Your protocol probably doesn't conform to NSObject, ala
@protocol MyProtocolNSObject
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just drawing an image, you could instead just set the contents
directly to the image (same issue applies).
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On Aug 27, 2009, at 3:58 PM, David Duncan wrote:
By default when the contents of an animation change
contents of a layer change, sorry for any confusion...
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not mean that it is in a view hierarchy yet.
-viewDidAppear: or -viewWillAppear: make more sense here.
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was able to find the source.
Trust what you see on the device. It is what your users will
experience. But you haven't provided enough information for anyone to
really assist you at this time...
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from the sample code
because there were a number of design flaws that lead to many issues,
such as the leak you are seeing here. Use the AVAudioPlayer class or
OpenAL directly instead.
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for the framework. Open up
your Targets, Get Info, select the General Tab and in the list at the
bottom of the window press the + button. You should be able to find
the AVFoundation.framework easily in the list.
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amount of experimentation required.
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than just returning 0,
usually by just extracting some bits from 'self', ala
-(NSUInteger)hash
{
uintptr_t hash = (uintptr_t)self;
return (hash 4);
}
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data
is written (and writing to flash can be fairly costly).
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If you can require iPhone OS 3.0 then you can experiment with the
CAShapeLayer which will automatically rerender when zoomed.
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On Aug 17, 2009, at 4:18 PM, Kaspar Fischer
kaspar.fisc...@dreizak.com wrote:
Any ideas?
Kaspar
On 16.08.2009, at 12:43, Kaspar
this situation.
Caveat implementor.
On Aug 15, 2009, at 2:19 PM, Jack Carbaugh wrote:
ah but wouldn't this be a FAIL if say, the user was using a battery
extender for a quick recharge ?
On Aug 15, 2009, at 3:40 AM, David Duncan wrote:
On Aug 14, 2009, at 4:29 AM, Sean Kline wrote:
Is another
memory glitches, it sounds like your images are
awfully large...
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On Aug 13, 2009, at 9:24 AM, Daniel Furrer wrote:
I'm trying to get the RGB components of a system color.
Which system color? Many system colors are patterns and thus do not
have real RGB values.
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On Aug 13, 2009, at 2:12 PM, Eric E. Dolecki wrote:
Is there a way to tell if the device is currently docked?
Probably the closest thing would be to use the Battery API to
determine if the battery is being charged. See UIDevice for details.
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.
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that alternative instead.
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you elaborate?
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into its coordinate system.
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on the head here too): Always
ensure your using floating point division if your going to do this.
That means always dividing by 255.0. I've seen too many people asking
why do I always get black and pointed out because you forgot the .
0 :).
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?
CGContextRotateCTM(UIGraphicsGetCurrentContext(), M_PI / 2.0);
[img drawAtPoint...];
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at least). By
default a view (or layer) is not redraw when it is resized, but the
content is scaled. You want to change the contentMode on the UIView if
you want it to redraw (and understand that there is a performance
penalty for doing this).
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or not. About the only thing to keep in mind is that if you
do use a view controller, don't use the orientation change support.
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framework, but it is possible –
there are a lot of things that only work on the device.
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path on some devices.
- how you do it in OpenGL
You need to register for UIDevice orientation notifications and use
those notifications to rotate your modelview matrix.
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override should call [super layoutSubviews] first.
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to implement?
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.
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:
-[FlipsideView drawRect:] in FlipsideView.o
_CGContextSaveGState, referenced from:
-[FlipsideView drawRect:] in FlipsideView.o
_CGContextRestoreGState, referenced from:
-[FlipsideView drawRect:] in FlipsideView.o
_CGContextSetFillColor, referenced from:
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.
Please file a bug report on this issue.
One work around is to animate the contentsRect property instead of
contents and use the contentsRect to select a portion of a single
image that is assigned to the contents property of the layer.
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and then the underlying view is redrawn
with the added image. What's the convenient way to avoid the
flickering?
Set the final value of the animation on the layer when you add the
animation. You'll want to disable actions when you change the current
value of the layer as well.
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sent to instance 0x530f10'
Are you building with the 2.2.1 SDK and running on the iPhone OS 3
simulator? Perhaps the other way around? Either way, it is not a
supported configuration (the simulator OS must always match the SDK
used).
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at http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html
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of -drawRect: and it should all be 100% related to
drawing the content of your view. You may read from various
properties, but you almost never set them.
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insertSubview:strokeViewClass atIndex:1];
totally doesn't work.
Where did you create the view? If you didn't create a view (either by
alloc/initWithFrame: or by adding it in a NIB and setting up an
outlet) then strokeViewClass is likely nil.
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side of the position.
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= view.center;
Then you will find that c == c2, c != visualCenter, and c2 !=
visualCenter.
This is why using translations for transforms is very confusing. You
expect the center of the view to change, but it does not. This is by
design.
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(if somewhat useless). It just puts them all in
the same bucket. If you want a better hash code, then you would have
to implement that yourself (I would probably do something with the
width, height, rowbytes and maybe some other parameters of the image.
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(for example) then setting the view's center to the center of
the screen is a saner approach than using the transform matrix to do it.
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Please do
of a view within the same animation
block and both animations will occur concurrently.
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is applied to that final rectangle to
determine the actual position on screen. The frame rectangle is then
extracted from that in a process that while meaningful tends to be
useless to developers.
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The Core Animation instrument (and a few others) require you to target
the device rather than the simulator.
On Jun 13, 2009, at 2:46 PM, Chunk 1978 wrote:
how can i add core animation to the performance tools list? it, and
several others, are deactivated.
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. If
the image is fairly large, then you may want to use a CATiledLayer
(but you will have to draw it via Quartz instead of via UIImage's draw
methods).
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is
upside down?
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however, then it is possible your text is going to be upside down.
The usual case of this is altering the text matrix, via
CGContextSetTextMatrix, as it is not saved when you save the drawing
state.
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something better that you can do here...
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not - read the man page x-man-page://3/sleep for details.
If you want something closer to a drift free timer, then you need to
determine when you want to wake up and use mach_wait_until() or a
higher level API to wait until that time.
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not just change the view's center property?
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values in your
transform matrix. If you move the view's center, then you are updating
the view's center property. Either way its the same amount of work on
yoru part.
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