UIImage memory leak issue in ARC

Question

We used below code to set image in image view,

@autoreleasepool {
    UIImageView *titleView = [[UIImageView alloc] initWithImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"ImgTitle" ofType:@"png"]]];
    }

Instruments shows memory leak in above two lines. We checked through Xcode 5.0.1 to iOS7.

Anyone please suggest to resolve that issue.

Can i knew reason for write code into the @autoreleasepool?? — Vishal Sharma, Apr 29 '14 at 11:29
We used UIImageView *titleView = [[UIImageView alloc]initWithImage: [UIImage imageWithContentsOfFile: [[NSBundle mainBundle]pathForResource: @"ImgTitle" ofType:@"png"]]]; code alone. To reduce memory leak we put the code inside the autoreleasepool, now memory leak percentage ll be reduced, but still leak happens. — MobDevUser, Apr 29 '14 at 11:42
@Ramdy with \@autoreleasepool, he don't need to drain the pool. — CarmeloS, Apr 29 '14 at 11:51
Under ARC, this code shouldn't leak any memory, please paste your Instrument snapshot. — CarmeloS, Apr 29 '14 at 11:54

score 0 · Answer 1 · answered Apr 29 '14 at 11:40

Try to change

@autoreleasepool
{
UIImageView *titleView = [[UIImageView alloc]initWithImage:
                         [UIImage imageWithContentsOfFile:
                         [[NSBundle mainBundle]pathForResource:
                         @"ImgTitle" ofType:@"png"]]];
}

to

UIImageView *titleView = [[UIImageView alloc]initWithImage:
                             [UIImage imageWithContentsOfFile:
                             [[NSBundle mainBundle]pathForResource:
                             @"ImgTitle" ofType:@"png"]]];

After using the titleView you can set it to nil to handle memory as below.

If project is ARC enabled, use

titleView=nil;

If not,

titleView release];
titleView=nil;`

This will solve your problem.

score 0 · Answer 2 · answered Apr 29 '14 at 12:05

0

For me your code is showing

Dead Store : Value stored to 'titleView' during its initialization is never read

Which makes sense too. There is no memory leak warning

answered Apr 29 '14 at 12:05

Inder Kumar Rathore

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UIImage memory leak issue in ARC

2 Answers2