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POMemory Management - Multiple Buttons and retaincount
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  1. POMemory Management - Multiple Buttons and retaincount
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    copied!<p>i´ve created my own scrollView and added different Buttons on that View. This class <code>MyScrollView</code> was created on a ViewController. Then i´ve tested that on the iOS simulator while calling the "simulate memory warning". But nothing happens - no dealloc on that <code>MyScrollView</code> is called. So i´ve checked the retaincount on different code lines. </p> <p>Unfortunately, all the apple memory docu and different cocoa blogs didn´t help me. So it would be cool if some of you devs could help me on that..</p> <p><strong>MyScrollView.h</strong></p> <pre><code>@interface MyScrollView : UIScrollView { NSArray* photosThumb; NSArray* photosFull; NSMutableArray* photoItemsArray; } @property (nonatomic, retain) NSArray* photosThumb; @property (nonatomic, retain) NSArray* photosFull; @property (nonatomic, retain) NSMutableArray* photoItemsArray; @end </code></pre> <p><strong>MyScrollView.m</strong></p> <pre><code>@implementation MyScrollView @synthesize photoItemsArray, photosFull, photosThumb; -(id) initArraySmall:(NSArray*) _photos initArrayBig:(NSArray*) _photosBig{ self.photosThumb = _photos; self.photosFull = _photosBig; NSUInteger i, count = [self.photosThumb count]; self.photoItemsArray = [[NSMutableArray alloc] init]; for (i = 0; i &lt; count; i++) { MyButton* photoButton = [[MyButton alloc] init]; NSLog(@"MyButton 1: %d", [photoButton retainCount]); // -&gt; 1 [photoButton addTarget:nil action:@selector(buttonDown: ) forControlEvents:UIControlEventTouchUpInside]; [self.photoItemsArray addObject:photoButton]; NSLog(@"MyButton 2: %d", [photoButton retainCount]); // -&gt; 2 [photoButton release]; NSLog(@"MyButton 3: %d", [photoButton retainCount]); // -&gt; 1 [self addSubview:[self.photoItemsArray lastObject]]; NSLog(@"MyButton 4: %d", [photoButton retainCount]); // -&gt; 2 } [self.photosThumb retain]; [self.photosFull retain]; NSLog(@"photosThumb: %d photosFull: %d", [photosThumb retainCount], [photosFull retainCount]); // -&gt; retaincount 4, 0 [self.photoItemsArray release]; NSLog(@"photoItemsArray 1: %d", [self.photoItemsArray retainCount]); // -&gt; 1 } return self; } - (void)dealloc { NSLog(@"dealloc"); self.photosThumb = nil; self.photosFull = nil; self.photoItemsArray = nil; [super dealloc]; } @end </code></pre> <p><strong>Here´s my ViewController.h</strong></p> <pre><code>@interface VideoViewController : UIViewController { MyScrollView* myView; NSArray* photos; NSArray* photosBig; } @property (nonatomic, retain) MyScrollView* myView; @property (nonatomic, retain) NSArray* photos; @property (nonatomic, retain) NSArray* photosBig; @end </code></pre> <p><strong>ViewController.m</strong></p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; photos = [NSArray arrayWithObjects:@"one.png", @"two.png", @"three.png", nil]; photosBig = [NSArray arrayWithObjects:@"oneBig.png", @"twoBig.png", @"threeBig.png", nil]; self.myView = [[MyScrollView alloc] initArraySmall:photos initArrayBig:photosBig]; [self.view addSubview:self.myView]; [self.myView release]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; NSLog(@"didReceiveMemoryWarning"); [self.myView release]; self.myView = nil; } - (void)dealloc { [super dealloc]; NSLog(@"dealloc"); [self.photos release]; [self.photosBig release]; [self.photoGallery release]; } </code></pre>
 

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