Re: Connecting a button to MyView zeros integers
On Feb 11, 2015, at 9:56 PM, Roland King r...@rols.org wrote:
On 12 Feb 2015, at 13:36, N!K pu56ucl...@alumni.purdue.edu wrote:
Control-clicking the button in .xib does show the outlet panel but it does
not list an IBAction, so it cannot connect to the IBAction entered into the
MyView.h and .m files. Also, control-dragging from the button to MyView (in
.xib, not in editor) sets up the position constraints. Control-dragging from
the button to any icon does nothing.
Ctrl click the view, not the button. When you ctrl-click the view you will
see the actions listed and you can drag BACK to the button. Or you can go
find the ‘connections inspector’ (View-Utilities-Show Connections
Inspector) panel for the button and drag ‘selector’ to the view you want to
perform the action on and then you can select the action performed. Either
way works, there’s probably a load more ways like the connections inspector
on the view which you can probably drag the IBAction to whatever button you
want.
Thank you. This indeed works. This is essentially an improvement over what I
learned in Hillegas’ 3rd edition, which always worked.
So how have I been going astray? Well, things have changed since then. Your
instruction above got me up to today’s relaxed rules.
1. Hillegas made a big point of dragging from the button, which doesn’t list
the IBAction. So I never got as far as trying to drag from the view, which does
have the IBAction in its list. This works.
2. The button’s list doesn’t have an IBAction in it, but it does have a
selector. It didn’t occur to me to try dragging from that, and then the panel
with the IBAction shows up. This works, too.
3. It’s no longer necessary to add an empty object icon, as Hillegas did in his
example on pp.20-21.
On my original path, I was able to make the current example – in Apple’s
Xcode_Overview.pdf, 2014-03-10, pp 64-65 – work with MyView by adding an empty
object icon. But this zeroed all my integers; not acceptable.
This Xcode_Overview example uses an implementation file, not AppDelegate. It
does not add an empty object in IB.
Xcode is not allowing connection to my MyView file. Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate, which of course
responds to the button. Clicking the button in the View initiates the
IBAction, which indicates that I’m following the instruction correctly. I
do the same steps when I try it with my MyView file, which fails.
Might this be a bug? Or a defective copy of Xcode? Has anyone observed the
same behavior?
No somehow you are just flapping at it and failing. Not a bug, not a
defective copy of Xcode.
Maybe this remains to be seen. Although the advice above works, my original
request for help was based on my attempt to follow Apple’s current example,
which works only with AppDelegate. This just can’t be right.
Nick
Go to your view header file and type in the IBAction, you will then find it
listed either on ctrl-click on the view (assuming you have the view in your
NIB set to the right class, you do right, you did set the view class in IB)
or by going to the connection inspector for the button and dragging the
‘selector’ to the view, when it will list only the IBActions.
Nick
On Feb 7, 2015, at 10:27 PM, Uli Kusterer witness.of.teacht...@gmx.net
wrote:
So quick to discount Stack Overflow. What they’re suggesting is simply how
to create a new object and define a new outlet on it that points to an
object in a quick way. Seems like a perfectly good answer to a problem to
me, and my guess is the OP might not have quite matched it up to the right
question. Without a link to the answer, it’s hard to tell.
My guess is the OP is experiencing a common beginners’ confusion about how
NIB files work and is creating a second object while all they want to do is
really just hook something up to an existing object in the NIB, likely to
File’s Owner. Creating a new object instead of using an existing one of
course means that all ivars get new (likely default) values, which would be
completely consistent with the observed behaviour of “everything going to
0”.
Cheers,
-- Uli Kusterer
“The Witnesses of TeachText are everywhere...”
http://zathras.de
On 07 Feb 2015, at 03:43, Roland King r...@rols.org wrote:
I have no idea what stackoverflow is suggesting here but it looks entirely
wrong as usual for that junky site. You're just creating a standalone I
referenced object.
Right click your view in IB then wait a second and right click it again. I
think it's right clicks. You will then get the outlet panel which is the
grey HUD display with all the outlets and actions. You can drag connect to
your buttons. There's some ctrl alt shift cmd combo which does this too
but I never remember it. You can still connect view outlets as before,
just that ctrl-drag was repurposed a couple of xcodes ago for
Re: Connecting a button to MyView zeros integers
On Feb 13, 2015, at 8:42 AM, David Duncan david.dun...@apple.com wrote:
Since you elided your header file, this begs a question – is this iOS or OS X?
This is OSX.
I was following Apple’s example, which control-drags from a button to the .m
file. The .h file isn’t used. I supplied the shortest possible file to avoid
confusion.
If I’m not mistaken, subclasses of NSView do not get -initWithCoder:, but
rather -initWithFrame:, which begs the question of have you confirmed that
your -initWithCoder: method is being called?
Yes. With a breakpoint.
InitWithCoder is called because Runtime Behavior, Instantiation, Prefer Coder
is checked in xib’s inspector.
There was quite a discussion about why it works this way 12/23/14 - 12/30/14,
in response to my request for help, “initWithFrame fails” Roland King nailed
it in his email 12/26/2014.
Nick
On Feb 6, 2015, at 6:22 PM, N!K pu56ucl...@alumni.purdue.edu wrote:
I would like to connect a button to MyView class, but Xcode 6.1.1 only
allows control-dragging a button to AppDelegate to create an IBAction. I
have not encountered this previously. Looking for a workaround, I found this
recommendation in a couple of Stack Overflow and other web pages as well as
a YouTube video. It enables the button to work, but unfortunately it zeros
all the integers in MyView.
The recommendation is:
1. Drag an empty Object from the IB library to the column of blue icons.
2. Set its class to MyView.
3. Control-drag from the button to MyView.m
4. Fill in the name (“act”) in the popup.
This puts the IBAction template into MyView, ready to fill in.
#import MyView.h
@implementation MyView
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
iii=1000;
k=99;
}
return self;
}
- (IBAction)act:(id)sender {
iii=iii+1;
NSLog(@ iba i= %i,iii);
}
In MyView.m, iii=1000 is initialized in initWithCoder. At the breakpoint
after IBAction, iii is seen in both places to have the value 1, not 1001,
by hovering. It was zeroed and then incremented after clicking on Button in
the View. Similarly, k is initialized to 99 and then zeroed. Both are ivars
in MyView.h.
Clearly, zeroing all the integers is not acceptable. Can this approach be
saved? Having the IBAction in MyView is desirable for directly relating its
functions to the rest of MyView, rather than indirectly from AppDelegate. On
the other hand, Xcode may have very good reasons – unknown to me – for
restricting IBAction to AppDelegate. Maybe timing?
Thanks in advance,
Nick
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Re: Connecting a button to MyView zeros integers
On Feb 13, 2015, at 6:49 AM, Uli Kusterer witness.of.teacht...@gmx.net wrote:
On 12 Feb 2015, at 06:36, N!K pu56ucl...@alumni.purdue.edu wrote:
Control-clicking the button in .xib does show the outlet panel but it does
not list an IBAction, so it cannot connect to the IBAction entered into the
MyView.h and .m files. Also, control-dragging from the button to MyView (in
.xib, not in editor) sets up the position constraints. Control-dragging from
the button to any icon does nothing.
You mean to File's Owner? Is the “Custom Class of File's Owner set to the
right class?
Yes.
Both right-drag and ctrl-drag still work for me to connect button actions in
6.1.1 (which is the latest on the MAS).
For me, control-dragging does not work with anything except AppDelegate,
following Apple’s current example.
I haven’t needed a control for quite some time, and I found that things have
changed in Xcode 6.1.1. I’m attempting to follow Apple’s current
instruction.
Here’s the instruction from Apple’s Xcode_Overview.pdf, 2014-03-10, pp
64-65. The pictures have to be omitted here due to space constraints of this
forum.
Control-drag from the control in Interface Builder to the implementation
file. (In the screenshot, the assistant editor displays the implementation
file of the view controller for the Warrior button.) Xcode indicates where
you can insert an action method in your code.
[picture shows a line with a leading circle in a space in .m]
Release the Control-drag. The assistant editor displays a Connection menu.
In this menu, type the name of the action method (chooseWarrior in the
screenshot below), and click Connect.
[picture shows a menu with space to enter name of action]
This is for adding a new outlet/action.
Which also makes the connection. But following Apple’s current example works
only with AppDelegate in my system.
I was under the impression you had an existing one that you just wanted to
hook up?
I had also tried entering the IBAction in .h and .m. Initially I failed because
I was constrained by what I learned in Hillegas’ 3rd edition. I succeeded when
I followed Roland King’s specific directions, which showed me that some of the
old constraints no longer apply. Please see my reply to Roland’s email.
Nick
Connect User Interface Objects to Code
In the implementation file, Xcode inserts a skeletal definition for the new
method, as shown below. The IBAction return type is a special keyword
indicating that this instance method can be connected to your storyboard or
xib file. Xcode also sets the action selector for the control to this
method. As a result, the method gets invoked whenever the control receives
an action message.
[picture shows - (IBAction)chooseWarrior:(id)sender { } ]
This Xcode_Overview example uses an implementation file, not AppDelegate. It
does not add an empty object in IB.
Xcode is not allowing connection to my MyView file. Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate, which of course
responds to the button. Clicking the button in the View initiates the
IBAction, which indicates that I’m following the instruction correctly. I
do the same steps when I try it with my MyView file, which fails.
Might this be a bug? Or a defective copy of Xcode? Has anyone observed the
same behavior?
I'm not sure what you're trying to do. Can you give us a better description?
Your app delegate has an act: method but you're trying to connect to it by
dragging to a MyView?
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Re: Connecting a button to MyView zeros integers
It was left checked. Please see my reply to Dave Duncan. Nick On Feb 13, 2015, at 9:16 AM, Kyle Sluder k...@ksluder.com wrote: On Fri, Feb 13, 2015, at 10:42 AM, David Duncan wrote: Since you elided your header file, this begs a question – is this iOS or OS X? If I’m not mistaken, subclasses of NSView do not get -initWithCoder:, but rather -initWithFrame:, which begs the question of have you confirmed that your -initWithCoder: method is being called? This depends on whether the prefer coder checkbox was checked when the XIB was authored. If that checkbox is checked, instantiation behaves like iOS, where custom views get -initWithCoder: instead of -initWithFrame:. --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: https://lists.apple.com/mailman/options/cocoa-dev/pu56ucla62%40alumni.purdue.edu This email sent to pu56ucl...@alumni.purdue.edu ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Connecting a button to MyView zeros integers
Release the Control-drag. The assistant editor displays a Connection menu.
In this menu, type the name of the action method (chooseWarrior in the
screenshot below), and click Connect.
[picture shows a menu with space to enter name of action]
This is for adding a new outlet/action. I was under the impression you had an
existing one that you just wanted to hook up?
I didn't read it that way. Further on down he says Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate which I took to
mean the drag-to-insert-method-stub bit doesn't work. I suggested just adding
the IBAction by hand in the .h file. I'm not sure I ever tried the auto-add
method stuff so I have no idea if it works, but I do know typing the IBAction
code in by hand does and takes about 2 seconds.
This Xcode_Overview example uses an implementation file, not AppDelegate. It
does not add an empty object in IB.
Xcode is not allowing connection to my MyView file. Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate, which of course
responds to the button. Clicking the button in the View initiates the
IBAction, which indicates that I’m following the instruction correctly. I
do the same steps when I try it with my MyView file, which fails.
Might this be a bug? Or a defective copy of Xcode? Has anyone observed the
same behavior?
I'm not sure what you're trying to do. Can you give us a better description?
Your app delegate has an act: method but you're trying to connect to it by
dragging to a MyView?
The way I read it is he wants an act: method on his MyView and is trying to add
the method by dragging to the interface/implementation file and is failing to
get the code inserted into the file, but when he drags to the Delegate object
then it works, and it also connects it. I also asked if the view he's dragging
to has its class set correctly to MyView because if it's not, that would
probably indicate both why the method isn't added by drag and why it can't be
connected.
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Re: Connecting a button to MyView zeros integers
On 12 Feb 2015, at 06:36, N!K pu56ucl...@alumni.purdue.edu wrote:
Control-clicking the button in .xib does show the outlet panel but it does
not list an IBAction, so it cannot connect to the IBAction entered into the
MyView.h and .m files. Also, control-dragging from the button to MyView (in
.xib, not in editor) sets up the position constraints. Control-dragging from
the button to any icon does nothing.
You mean to File's Owner? Is the Custom Class of File's Owner set to the
right class? Both right-drag and ctrl-drag still work for me to connect button
actions in 6.1.1 (which is the latest on the MAS).
I haven’t needed a control for quite some time, and I found that things have
changed in Xcode 6.1.1. I’m attempting to follow Apple’s current instruction.
Here’s the instruction from Apple’s Xcode_Overview.pdf, 2014-03-10, pp 64-65.
The pictures have to be omitted here due to space constraints of this forum.
Control-drag from the control in Interface Builder to the implementation
file. (In the screenshot, the assistant editor displays the implementation
file of the view controller for the Warrior button.) Xcode indicates where
you can insert an action method in your code.
[picture shows a line with a leading circle in a space in .m]
Release the Control-drag. The assistant editor displays a Connection menu. In
this menu, type the name of the action method (chooseWarrior in the
screenshot below), and click Connect.
[picture shows a menu with space to enter name of action]
This is for adding a new outlet/action. I was under the impression you had an
existing one that you just wanted to hook up?
Connect User Interface Objects to Code
In the implementation file, Xcode inserts a skeletal definition for the new
method, as shown below. The IBAction return type is a special keyword
indicating that this instance method can be connected to your storyboard or
xib file. Xcode also sets the action selector for the control to this method.
As a result, the method gets invoked whenever the control receives an action
message.
[picture shows - (IBAction)chooseWarrior:(id)sender { } ]
This Xcode_Overview example uses an implementation file, not AppDelegate. It
does not add an empty object in IB.
Xcode is not allowing connection to my MyView file. Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate, which of course
responds to the button. Clicking the button in the View initiates the
IBAction, which indicates that I’m following the instruction correctly. I do
the same steps when I try it with my MyView file, which fails.
Might this be a bug? Or a defective copy of Xcode? Has anyone observed the
same behavior?
I'm not sure what you're trying to do. Can you give us a better description?
Your app delegate has an act: method but you're trying to connect to it by
dragging to a MyView?
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Re: Connecting a button to MyView zeros integers
Since you elided your header file, this begs a question – is this iOS or OS X?
If I’m not mistaken, subclasses of NSView do not get -initWithCoder:, but
rather -initWithFrame:, which begs the question of have you confirmed that your
-initWithCoder: method is being called?
On Feb 6, 2015, at 6:22 PM, N!K pu56ucl...@alumni.purdue.edu wrote:
I would like to connect a button to MyView class, but Xcode 6.1.1 only allows
control-dragging a button to AppDelegate to create an IBAction. I have not
encountered this previously. Looking for a workaround, I found this
recommendation in a couple of Stack Overflow and other web pages as well as a
YouTube video. It enables the button to work, but unfortunately it zeros all
the integers in MyView.
The recommendation is:
1. Drag an empty Object from the IB library to the column of blue icons.
2. Set its class to MyView.
3. Control-drag from the button to MyView.m
4. Fill in the name (“act”) in the popup.
This puts the IBAction template into MyView, ready to fill in.
#import MyView.h
@implementation MyView
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
iii=1000;
k=99;
}
return self;
}
- (IBAction)act:(id)sender {
iii=iii+1;
NSLog(@ iba i= %i,iii);
}
In MyView.m, iii=1000 is initialized in initWithCoder. At the breakpoint
after IBAction, iii is seen in both places to have the value 1, not 1001, by
hovering. It was zeroed and then incremented after clicking on Button in the
View. Similarly, k is initialized to 99 and then zeroed. Both are ivars in
MyView.h.
Clearly, zeroing all the integers is not acceptable. Can this approach be
saved? Having the IBAction in MyView is desirable for directly relating its
functions to the rest of MyView, rather than indirectly from AppDelegate. On
the other hand, Xcode may have very good reasons – unknown to me – for
restricting IBAction to AppDelegate. Maybe timing?
Thanks in advance,
Nick
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Re: Connecting a button to MyView zeros integers
On Fri, Feb 13, 2015, at 10:42 AM, David Duncan wrote: Since you elided your header file, this begs a question – is this iOS or OS X? If I’m not mistaken, subclasses of NSView do not get -initWithCoder:, but rather -initWithFrame:, which begs the question of have you confirmed that your -initWithCoder: method is being called? This depends on whether the prefer coder checkbox was checked when the XIB was authored. If that checkbox is checked, instantiation behaves like iOS, where custom views get -initWithCoder: instead of -initWithFrame:. --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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Connecting a button to MyView zeros integers
On 14 Feb 2015, at 01:16, Kyle Sluder k...@ksluder.com wrote: On Fri, Feb 13, 2015, at 10:42 AM, David Duncan wrote: Since you elided your header file, this begs a question – is this iOS or OS X? If I’m not mistaken, subclasses of NSView do not get -initWithCoder:, but rather -initWithFrame:, which begs the question of have you confirmed that your -initWithCoder: method is being called? This depends on whether the prefer coder checkbox was checked when the XIB was authored. If that checkbox is checked, instantiation behaves like iOS, where custom views get -initWithCoder: instead of -initWithFrame:. From the fact in the original message that the two variables remained at the default of zero my assumption was that neither piece of advice from the previous thread on this was followed, those being :- 1) Leave the 'prefer coder' checkbox checked, because it's more consistent, arguably fixes a longstanding bug, and remembering when you've turned it on and off is likely to lead to confusion. 2) Don't put initialisation code directly in initWithCoder: but factor it out to a separate method called from all the init routines, so it doesn't matter which one is called, they all funnel through the same setup code. ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Connecting a button to MyView zeros integers
Control-clicking the button in .xib does show the outlet panel but it does not
list an IBAction, so it cannot connect to the IBAction entered into the
MyView.h and .m files. Also, control-dragging from the button to MyView (in
.xib, not in editor) sets up the position constraints. Control-dragging from
the button to any icon does nothing.
I haven’t needed a control for quite some time, and I found that things have
changed in Xcode 6.1.1. I’m attempting to follow Apple’s current instruction.
Here’s the instruction from Apple’s Xcode_Overview.pdf, 2014-03-10, pp 64-65.
The pictures have to be omitted here due to space constraints of this forum.
Control-drag from the control in Interface Builder to the implementation file.
(In the screenshot, the assistant editor displays the implementation file of
the view controller for the Warrior button.) Xcode indicates where you can
insert an action method in your code.
[picture shows a line with a leading circle in a space in .m]
Release the Control-drag. The assistant editor displays a Connection menu. In
this menu, type the name of the action method (chooseWarrior in the screenshot
below), and click Connect.
[picture shows a menu with space to enter name of action]
Connect User Interface Objects to Code
In the implementation file, Xcode inserts a skeletal definition for the new
method, as shown below. The IBAction return type is a special keyword
indicating that this instance method can be connected to your storyboard or xib
file. Xcode also sets the action selector for the control to this method. As a
result, the method gets invoked whenever the control receives an action
message.
[picture shows - (IBAction)chooseWarrior:(id)sender { } ]
This Xcode_Overview example uses an implementation file, not AppDelegate. It
does not add an empty object in IB.
Xcode is not allowing connection to my MyView file. Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate, which of course
responds to the button. Clicking the button in the View initiates the IBAction,
which indicates that I’m following the instruction correctly. I do the same
steps when I try it with my MyView file, which fails.
Might this be a bug? Or a defective copy of Xcode? Has anyone observed the same
behavior?
Nick
On Feb 7, 2015, at 10:27 PM, Uli Kusterer witness.of.teacht...@gmx.net wrote:
So quick to discount Stack Overflow. What they’re suggesting is simply how to
create a new object and define a new outlet on it that points to an object in
a quick way. Seems like a perfectly good answer to a problem to me, and my
guess is the OP might not have quite matched it up to the right question.
Without a link to the answer, it’s hard to tell.
My guess is the OP is experiencing a common beginners’ confusion about how
NIB files work and is creating a second object while all they want to do is
really just hook something up to an existing object in the NIB, likely to
File’s Owner. Creating a new object instead of using an existing one of
course means that all ivars get new (likely default) values, which would be
completely consistent with the observed behaviour of “everything going to 0”.
Cheers,
-- Uli Kusterer
“The Witnesses of TeachText are everywhere...”
http://zathras.de
On 07 Feb 2015, at 03:43, Roland King r...@rols.org wrote:
I have no idea what stackoverflow is suggesting here but it looks entirely
wrong as usual for that junky site. You're just creating a standalone I
referenced object.
Right click your view in IB then wait a second and right click it again. I
think it's right clicks. You will then get the outlet panel which is the
grey HUD display with all the outlets and actions. You can drag connect to
your buttons. There's some ctrl alt shift cmd combo which does this too but
I never remember it. You can still connect view outlets as before, just that
ctrl-drag was repurposed a couple of xcodes ago for auto layout so you have
to work a little harder to get the inspector up.
On 7 Feb 2015, at 10:22, N!K pu56ucl...@alumni.purdue.edu wrote:
I would like to connect a button to MyView class, but Xcode 6.1.1 only
allows control-dragging a button to AppDelegate to create an IBAction. I
have not encountered this previously. Looking for a workaround, I found
this recommendation in a couple of Stack Overflow and other web pages as
well as a YouTube video. It enables the button to work, but unfortunately
it zeros all the integers in MyView.
The recommendation is:
1. Drag an empty Object from the IB library to the column of blue icons.
2. Set its class to MyView.
3. Control-drag from the button to MyView.m
4. Fill in the name (“act”) in the popup.
This puts the IBAction template into MyView, ready to fill in.
#import MyView.h
@implementation MyView
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
Re: Connecting a button to MyView zeros integers
On 12 Feb 2015, at 13:36, N!K pu56ucl...@alumni.purdue.edu wrote:
Control-clicking the button in .xib does show the outlet panel but it does
not list an IBAction, so it cannot connect to the IBAction entered into the
MyView.h and .m files. Also, control-dragging from the button to MyView (in
.xib, not in editor) sets up the position constraints. Control-dragging from
the button to any icon does nothing.
Ctrl click the view, not the button. When you ctrl-click the view you will see
the actions listed and you can drag BACK to the button. Or you can go find the
‘connections inspector’ (View-Utilities-Show Connections Inspector) panel for
the button and drag ‘selector’ to the view you want to perform the action on
and then you can select the action performed. Either way works, there’s
probably a load more ways like the connections inspector on the view which you
can probably drag the IBAction to whatever button you want.
This Xcode_Overview example uses an implementation file, not AppDelegate. It
does not add an empty object in IB.
Xcode is not allowing connection to my MyView file. Insertion of -
(IBAction)act:(id)sender { } occurs only in my AppDelegate, which of course
responds to the button. Clicking the button in the View initiates the
IBAction, which indicates that I’m following the instruction correctly. I do
the same steps when I try it with my MyView file, which fails.
Might this be a bug? Or a defective copy of Xcode? Has anyone observed the
same behavior?
No somehow you are just flapping at it and failing. Not a bug, not a defective
copy of Xcode.
Go to your view header file and type in the IBAction, you will then find it
listed either on ctrl-click on the view (assuming you have the view in your NIB
set to the right class, you do right, you did set the view class in IB) or by
going to the connection inspector for the button and dragging the ‘selector’ to
the view, when it will list only the IBActions.
Nick
On Feb 7, 2015, at 10:27 PM, Uli Kusterer witness.of.teacht...@gmx.net
mailto:witness.of.teacht...@gmx.net wrote:
So quick to discount Stack Overflow. What they’re suggesting is simply how
to create a new object and define a new outlet on it that points to an
object in a quick way. Seems like a perfectly good answer to a problem to
me, and my guess is the OP might not have quite matched it up to the right
question. Without a link to the answer, it’s hard to tell.
My guess is the OP is experiencing a common beginners’ confusion about how
NIB files work and is creating a second object while all they want to do is
really just hook something up to an existing object in the NIB, likely to
File’s Owner. Creating a new object instead of using an existing one of
course means that all ivars get new (likely default) values, which would be
completely consistent with the observed behaviour of “everything going to 0”.
Cheers,
-- Uli Kusterer
“The Witnesses of TeachText are everywhere...”
http://zathras.de http://zathras.de/
On 07 Feb 2015, at 03:43, Roland King r...@rols.org wrote:
I have no idea what stackoverflow is suggesting here but it looks entirely
wrong as usual for that junky site. You're just creating a standalone I
referenced object.
Right click your view in IB then wait a second and right click it again. I
think it's right clicks. You will then get the outlet panel which is the
grey HUD display with all the outlets and actions. You can drag connect to
your buttons. There's some ctrl alt shift cmd combo which does this too but
I never remember it. You can still connect view outlets as before, just
that ctrl-drag was repurposed a couple of xcodes ago for auto layout so you
have to work a little harder to get the inspector up.
On 7 Feb 2015, at 10:22, N!K pu56ucl...@alumni.purdue.edu wrote:
I would like to connect a button to MyView class, but Xcode 6.1.1 only
allows control-dragging a button to AppDelegate to create an IBAction. I
have not encountered this previously. Looking for a workaround, I found
this recommendation in a couple of Stack Overflow and other web pages as
well as a YouTube video. It enables the button to work, but unfortunately
it zeros all the integers in MyView.
The recommendation is:
1. Drag an empty Object from the IB library to the column of blue icons.
2. Set its class to MyView.
3. Control-drag from the button to MyView.m
4. Fill in the name (“act”) in the popup.
This puts the IBAction template into MyView, ready to fill in.
#import MyView.h
@implementation MyView
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
iii=1000;
k=99;
}
return self;
}
- (IBAction)act:(id)sender {
iii=iii+1;
NSLog(@ iba i= %i,iii);
}
In MyView.m, iii=1000 is initialized in initWithCoder. At the breakpoint
after IBAction, iii is seen in both places to have
Re: Connecting a button to MyView zeros integers
So quick to discount Stack Overflow. What they’re suggesting is simply how to
create a new object and define a new outlet on it that points to an object in a
quick way. Seems like a perfectly good answer to a problem to me, and my guess
is the OP might not have quite matched it up to the right question. Without a
link to the answer, it’s hard to tell.
My guess is the OP is experiencing a common beginners’ confusion about how NIB
files work and is creating a second object while all they want to do is really
just hook something up to an existing object in the NIB, likely to File’s
Owner. Creating a new object instead of using an existing one of course means
that all ivars get new (likely default) values, which would be completely
consistent with the observed behaviour of “everything going to 0”.
Cheers,
-- Uli Kusterer
“The Witnesses of TeachText are everywhere...”
http://zathras.de
On 07 Feb 2015, at 03:43, Roland King r...@rols.org wrote:
I have no idea what stackoverflow is suggesting here but it looks entirely
wrong as usual for that junky site. You're just creating a standalone I
referenced object.
Right click your view in IB then wait a second and right click it again. I
think it's right clicks. You will then get the outlet panel which is the grey
HUD display with all the outlets and actions. You can drag connect to your
buttons. There's some ctrl alt shift cmd combo which does this too but I
never remember it. You can still connect view outlets as before, just that
ctrl-drag was repurposed a couple of xcodes ago for auto layout so you have
to work a little harder to get the inspector up.
On 7 Feb 2015, at 10:22, N!K pu56ucl...@alumni.purdue.edu wrote:
I would like to connect a button to MyView class, but Xcode 6.1.1 only
allows control-dragging a button to AppDelegate to create an IBAction. I
have not encountered this previously. Looking for a workaround, I found this
recommendation in a couple of Stack Overflow and other web pages as well as
a YouTube video. It enables the button to work, but unfortunately it zeros
all the integers in MyView.
The recommendation is:
1. Drag an empty Object from the IB library to the column of blue icons.
2. Set its class to MyView.
3. Control-drag from the button to MyView.m
4. Fill in the name (“act”) in the popup.
This puts the IBAction template into MyView, ready to fill in.
#import MyView.h
@implementation MyView
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
iii=1000;
k=99;
}
return self;
}
- (IBAction)act:(id)sender {
iii=iii+1;
NSLog(@ iba i= %i,iii);
}
In MyView.m, iii=1000 is initialized in initWithCoder. At the breakpoint
after IBAction, iii is seen in both places to have the value 1, not 1001,
by hovering. It was zeroed and then incremented after clicking on Button in
the View. Similarly, k is initialized to 99 and then zeroed. Both are ivars
in MyView.h.
Clearly, zeroing all the integers is not acceptable. Can this approach be
saved? Having the IBAction in MyView is desirable for directly relating its
functions to the rest of MyView, rather than indirectly from AppDelegate. On
the other hand, Xcode may have very good reasons – unknown to me – for
restricting IBAction to AppDelegate. Maybe timing?
Thanks in advance,
Nick
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Re: Connecting a button to MyView zeros integers
I have no idea what stackoverflow is suggesting here but it looks entirely
wrong as usual for that junky site. You're just creating a standalone I
referenced object.
Right click your view in IB then wait a second and right click it again. I
think it's right clicks. You will then get the outlet panel which is the grey
HUD display with all the outlets and actions. You can drag connect to your
buttons. There's some ctrl alt shift cmd combo which does this too but I never
remember it. You can still connect view outlets as before, just that ctrl-drag
was repurposed a couple of xcodes ago for auto layout so you have to work a
little harder to get the inspector up.
On 7 Feb 2015, at 10:22, N!K pu56ucl...@alumni.purdue.edu wrote:
I would like to connect a button to MyView class, but Xcode 6.1.1 only allows
control-dragging a button to AppDelegate to create an IBAction. I have not
encountered this previously. Looking for a workaround, I found this
recommendation in a couple of Stack Overflow and other web pages as well as a
YouTube video. It enables the button to work, but unfortunately it zeros all
the integers in MyView.
The recommendation is:
1. Drag an empty Object from the IB library to the column of blue icons.
2. Set its class to MyView.
3. Control-drag from the button to MyView.m
4. Fill in the name (“act”) in the popup.
This puts the IBAction template into MyView, ready to fill in.
#import MyView.h
@implementation MyView
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
iii=1000;
k=99;
}
return self;
}
- (IBAction)act:(id)sender {
iii=iii+1;
NSLog(@ iba i= %i,iii);
}
In MyView.m, iii=1000 is initialized in initWithCoder. At the breakpoint
after IBAction, iii is seen in both places to have the value 1, not 1001, by
hovering. It was zeroed and then incremented after clicking on Button in the
View. Similarly, k is initialized to 99 and then zeroed. Both are ivars in
MyView.h.
Clearly, zeroing all the integers is not acceptable. Can this approach be
saved? Having the IBAction in MyView is desirable for directly relating its
functions to the rest of MyView, rather than indirectly from AppDelegate. On
the other hand, Xcode may have very good reasons – unknown to me – for
restricting IBAction to AppDelegate. Maybe timing?
Thanks in advance,
Nick
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