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POApp crashes when UIImageView.image is set 2-3 times
 

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  1. POApp crashes when UIImageView.image is set 2-3 times
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    <p>My app crashes when I set the image-property on a UIImageView three times in a row (sometimes two times is enough). A few times I've seen a memory warning before the app closes, but most of the times it just collapses. The app does not crash in the simulator, so I'm quite sure it is a memory problem.</p> <p>Here's the code I use when setting the image property:</p> <pre><code>-(void)changeBgPictureTo:(UIImage *)img { [self.backgroundImage setImage:img]; } </code></pre> <p>The UIImages is allocated with the <code>[UIImage imageWithData:]</code> method:</p> <pre><code>[UIImage imageWithData:[NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:fileName ofType:type]]]; </code></pre> <p>The image is set correctly the first two times, but crashes on the third time. It has nothing to do with a specific image file. I've tried with 10 different images and it makes no difference.</p> <p>How do I make the UIImageView unload previous loaded images?</p> <p><strong>EDIT:</strong> Okay, I've been asked for the whole code so here it goes:</p> <p>I'm working with a class which looks like this:</p> <pre><code>@interface MyImage : NSObject { UIImage* image; int imgId; NSArray* colors; //contains 'UIColor' objects. } @property (nonatomic, retain) UIImage* image; @property (nonatomic, retain) NSArray* colors; @property (nonatomic, readwrite) int imgId; -(id)initWithFileName:(NSString*)fileName withType:(NSString*)type andId:(int)imgId andColors:(NSArray*)colorArray; @end </code></pre> <p>Here is the init implementation:</p> <pre><code>-(id)initWithFileName:(NSString*)fileName withType:(NSString*)type andId:(int)imageId andColors:(NSArray*)colorArray { self = [super init]; if (self) { self.colors = [NSArray arrayWithArray:colorArray]; self.imgId = imageId; self.image = [UIImage imageWithData:[NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:fileName ofType:type]]]; } return self; </code></pre> <p>}</p> <p>I have a datacontroller which has a list of 'MyImage' objects which is added in a loop with this call:</p> <pre><code>[self.myImages addObject:[[MyImage alloc] initWithFileName:[NSString stringWithFormat:@"0000%d", i] withType:@"jpg" andId:i andColors:colors]]; </code></pre> <p>I have 9 images which is named 00001.jpg, 00002.jpg, ....., 00008.jpg.</p> <p>This data controller has a method like this:</p> <pre><code>-(MyImage *)getImageWithId:(int)imgId { for (MyImage* img in self.myImages) { if (img.imgId == imgId) return img; } return nil; } </code></pre> <p>The getImageWithId method is called like this:</p> <pre><code>-(void)btnPushed:(id)sender { [self.delegate changeBgPictureTo:[self.imgDataController getImageWithId:((UIButton*)sender).tag]]; } </code></pre> <p>The changeBgPictureTo method is the method which makes the setting of the image-property:</p> <pre><code>-(void)changeBgPictureTo:(MyImage *)img { NSLog(@"Setting image: %d", img.imgId); [self.backgroundImage setImage:img.image]; } </code></pre> <p>The log prints "Setting image: 0000X:" three times, but crashes shortly after the third print.</p>
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    1. USThomas Clemensen
    1. USThomas Clemensen
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    1. COhave you tried setting it to nil, before loading new image.. i mean imageView.image = nil;
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      1. POApp crashes when UIImageView.image is set 2-3 times
      1. USvishy
    2. COYes, it makes no difference. It still crashes :(
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      1. POApp crashes when UIImageView.image is set 2-3 times
      1. USThomas Clemensen
    3. COWhat do you see in the log when it crashes? What type of crash is occurring?
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      1. USDBD
 

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