Memory Leak in Custom UIView When Using CADisplayLink for Animation in Objective-C
I'm working through a tutorial and I've been researching this but I've been struggling with this for a few days now and could really use some help... I can't seem to get I am experiencing a memory leak in my custom UIView subclass that animates an object using CADisplayLink... The leak seems to occur when I create an instance of the CADisplayLink and add it to the run loop. I have followed the typical pattern for using CADisplayLink, but my object’s retain count keeps increasing, which I can see in Instruments. Here’s a simplified version of my code: ```objective-c @interface MyCustomView : UIView { CADisplayLink *displayLink; } @end @implementation MyCustomView - (instancetype)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(updateAnimation)]; [displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode]; } return self; } - (void)updateAnimation { // Update animation logic here } - (void)dealloc { [displayLink invalidate]; displayLink = nil; } @end ``` I am properly invalidating the display link in the `dealloc` method, but Instruments shows that the memory associated with `MyCustomView` is not being released. Additionally, I’ve tried using weak references for the displayLink as follows: ```objective-c __weak typeof(self) weakSelf = self; displayLink = [CADisplayLink displayLinkWithTarget:weakSelf selector:@selector(updateAnimation)]; ``` Unfortunately, this results in a crash because the target gets deallocated right away. I’ve also ensured that there are no strong references to `MyCustomView` elsewhere in the code. Any insights on what might be causing this memory leak? Could it be related to the way I'm handling the CADisplayLink or any other issue I'm overlooking? The stack includes Objective-C and several other technologies. This is my first time working with Objective-C 3.9. Is there a simpler solution I'm overlooking? I'm working in a CentOS environment. What would be the recommended way to handle this? Am I approaching this the right way?