ALAsset Photo Library Image Performance Improvements When Its Loading Slow

Question

Hi i\'ve got a problem with display an image on my scrollView.

At first i create new UIImageView with asset url:

-(void) findLargeImage:(NSNumber*)          


        

Answer 1

You are manipulating the view from another thread. You must use the main thread for manipulating the view.

Add image to scrollView using:

dispatch_async(dispatch_get_main_queue(), ^{
   [self.scrollView addSubview:itemToAdd];
}

or using:

[self.scrollView performSelectorOnMainThread:@selector(addSubview:) withObject:itemToAdd waitUntilDone:NO];

Please refer:

1. NSObject Class Reference
2. GCD