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POProtocol Memory
 

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    <p>I'm sorry for repost. What have really bug me is if property retain should release when:<br> case 1 : (code below) button is already alloc in init: then add to subview then release it, and by any chance I set the button property in another class (I didn't release in dealloc:) it will leak then?<br> case 2 : button is already alloc in init: then add to subview then release it, and by any chance I didn't set the any button property in another class (I didn't use the property) (I release it in dealloc) then it will crash.</p> <p>So what should I do if I want to alloc button in init: and I want to set the property too ?</p> <pre><code>@interface SomeClass : UIView { UIButton *_button; } @property (nonatomic, retain)UIButton *button; @implementation SomeClass @synthesize button = _button; - (id)init { _button = [[UIbutton alloc] initWithFrame:CGRectMake(0.0f,0.0f,100.0f,20.0f)]; [[_button titleLabel] setFont:BUTTON_FONT]; [_button setBackgroundImage:[[UIImage imageNamed:@"button_blue.png"] stretchableImageWithLeftCapWidth:20.0f topCapHeight:15.0f] forState:UIControlStateNormal]; [_button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [_button setTitleShadowColor:[UIColor blackColor] forState:UIControlStateNormal]; [[_button titleLabel] setShadowOffset:CGSizeMake(0.0f, 1.0f)]; [_button addTarget:self action:@selector(buttonDidTapped:) forControlEvents:UIControlEventTouchUpInside]; [self addSubView:_button]; [_button release]; } - (void)dealloc { //[self.button release]; // case 1 [self.button release]; // case 2 [super dealloc]; } @end </code></pre>
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    1. COI'm sorry I forgot to alloc the button in init:. I have edited the example.
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    2. COI didn't set the property. it crash
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    3. COI recommend a basic introduction book on Objective-C as you don't seem to be familiar with basic concepts of initializers.
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