Posting for the benefit of the list:
http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/CommunicateWithObjects.html
See the section on Target-Action in UIKit.
On Sep 13, 2011, at 2:28 PM, Rick Mann wrote:
>
> On Sep 12, 2011, at 11:47 , Jamie Pinkham wrote:
>
>> If your use case permits, you can figure out the frame of the bar button
>> item in it's action selector by giving the selector the following signature:
>>
>> - (void)barButtonAction:(UIBarButtonItem *)item event:(UIEvent *)event;
>
> Where is this signature documented? I looked around a bit, but couldn't find
> it. I wonder what other signatures can be employed.
>
> --
> Rick
>
>>
>> You can then use the properties of UIEvent to get the touches location, or
>> the view that the touches belong to.
>>
>> For instance:
>> - (IBAction)barButtonAction:(UIBarButtonItem *)sender event:(UIEvent *)event{
>> UITouch *touch = [[event allTouches] anyObject];
>> CGPoint locationInView = [[[event allTouches] anyObject]
>> locationInView:self.view];
>> NSLog(@"event touch location = %@", [NSValue
>> valueWithCGPoint:locationInView]);
>> NSLog(@"touch.view = %@", [touch view]);
>> }
>>
>> On Sep 12, 2011, at 12:53 PM, Roland King wrote:
>>
>>> I have a toolbar with items on it. One of them is a trash can. When I
>>> delete something from the main screen I'd like it to 'minify' towards the
>>> trash can, well I think I would, I have to see what it looks like and see
>>> if the effect is as nice as I hope, I want to draw attention to where the
>>> 'thing' has gone and this seems like a reasonable animation to try.
>>>
>>> However .. I can't figure out what the frame for the UIBarButtonItem is ..
>>> it's on a bar with items which change, some flexible space etc, so it's not
>>> a fixed offset from either end of the the thing, and I can't find an API
>>> which tells me what the frame is for a given item. Is there one I've
>>> missed? _______________________________________________
>>>
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>>
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