StackOverflow2013

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plurals

PO
primarykey
Id
7567480
data
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0
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0
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CreationDate
2011-09-27T10:13:49.297
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2011-09-27T13:30:42.683
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2011-09-27T13:30:42.683
LastEditorUserId
682166
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682166
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3642566
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2
Score
1
ViewCount
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text
Body
You should care about them! I currently track down such leaks. There are several possibilities, why they may occure: 1) Designing a UIView in the Interface Builder and initialize this view in a UIViewController (for animations and hiding/showing issues): You may have defined some IBOutlets (in your .h file), which you might have connected in the Interface Builder to the File's Owner. This IBOutlets should (as far as i know) always be designed as a property (please feel free to correct me, if i'm wrong) and in the dealloc method, don't forget to "nil" it. e.g: In the viewcontroller header File (i named it MyViewController.h) <blockquote> @interface MyViewController : UIViewController { IBOutlet UIWebView* webView; } @property (nonatomic, retain) IBOutlet UIWebView* webView; @end </blockquote> And in the viewController's .m file: <blockquote> @implementation @synthesize webView; <ul> <li>(void) dealloc {</li> </ul> self.webView = nil; //never forget this, otherwhise it will leak [super dealloc]; } @end </blockquote> 2) Designing a UIView in the Interface Builder and subclass this View: With subclassing i mean, that you can create a subclassed UIView Class and in the Interface Builder you set the class identifier to for example MyView e.g: <blockquote> @interface MyView : UIView { IBOutlet UIWebView* webView; } @property (nonatomic, retain) IBOutlet UIWebView* webView; @end </blockquote> Same as 1) (IBOutlets shoud be set nil on deallocation) 3) Adding a UIView as subview: Never forget to remove this view. e.g: (in my MyViewController, i want to add a subview) <blockquote> <ul> <li>(void) viewDidLoad {</li> </ul> UIView *aSubView = [[UIView alloc] initWithFrame:CGRectMake(0,0, 90, 90)]; aSubView.tag = 123; aSubView.backgroundColor = [UIColor blueColor]; [self.view addSubView:aSubView]; [aSubView release]; } </blockquote> And: <blockquote> <ul> <li>(void) viewDidUnload {</li> </ul> [[self.view viewWithTag:123] removeFromSuperview]; //remove only aSubView for (UIView *subview in [self.view subwiews]) { //or remove any subviews [subview removeFromSuperview]; } } </blockquote> Hope it helps! Br Nic
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1. This table or related slice is empty.
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1. POUIKit Memory Leak
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USNicTesla
UserOwnerUserId
1. USNicTesla
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CommentsPostId
1. COThis tree things should really be kept in mind! They'll really help you!
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