下载图像时iPhone4s中的应用程序崩溃

Question

I'm using SDWebImage for asynchrony download images from server. I've tested the app in iPhone 5 and 5s with iOS 8.1 and working fine, no memory warning at all.But i given build to client(using iPhone 4s) and he faces some crash while loading images, unfortunately i don't have iPhone 4s so can't figure out the problem. I tested in instruments with iPhone5 and here is screen shots after several run. And here is my code for download image

-(void)setImageWithUrl:(NSURL*)imgurl onImageView:(UIImageView*)image prograssive:(BOOL)progressive
{

    __block UIActivityIndicatorView *activityIndicator;

    __weak UIImageView *weakImageView = image;

    SDWebImageOptions opt;
    if (progressive) {

        opt = SDWebImageProgressiveDownload;
    }
    else
        opt = SDWebImageRetryFailed;

    [image sd_setImageWithURL:imgurl placeholderImage:[UIImage imageNamed:@"default_image"] options:opt progress:^(NSInteger receivedSize, NSInteger expectedSize)
     {
         if (!activityIndicator)
         {
             [weakImageView addSubview:activityIndicator = [UIActivityIndicatorView.alloc initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]];
             activityIndicator.center = CGPointMake(weakImageView.frame.size.width /2, weakImageView.frame.size.height/2);
             // activityIndicator.center = weakImageView.center;
             [activityIndicator setBackgroundColor:[UIColor clearColor]];
             [activityIndicator startAnimating];

         }
     }
                    completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL)
     {

         [activityIndicator removeFromSuperview];
         activityIndicator = nil;
     }];
}

I did cleared memory in didRecdeiveMemoryWarnig method

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
    NSLog(@"memory warning received in voucher");
    [[SDImageCache sharedImageCache] clearMemory];
    [[SDImageCache sharedImageCache] cleanDisk];
    [[SDImageCache sharedImageCache] setValue:nil forKey:@"memCache"];
}

But it still crashes in iPhone 4s.Can any one guid me what do?

Answer 1

It sounds like your App is being killed due to memory pressure. Maybe try using an Autorelease Pool to mitigate any memory spikes, since I think what you are doing in didReceiveMemoryWarning doesn't really help in those situation.