renderincontext Memory Leak if not use on Main thread

Question

I am trying to convert my UIView into UIImage using below code.

+ (UIImage *) imageWithView:(UIView *)view{
     float scale = 1.0f;
    UIGraphicsBeginImag         


        

Answer 1

I just had this happen to me (memory leak due to renderInContext) on the main thread. I was looping over hundreds off-screen views, rendering them to UIImage objects, and saving them as PNG files. What solved the problem for me was wrapping the guts of my loop in an @autoreleasepool block:

Broken:

for (...) {
   ...render layer in context...
   ...save image to disk...
}

Works:

for (...) {
   @autoreleasepool {
      ...render layer in context...
      ...save image to disk...
   }
}

Makes sense, right?