How to implement didReceiveMemoryWarning in Swift?

Question

Whenever I create a new View Controller subclass, Xcode automatically adds the method

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning         


        

Answer 1

When didReceiveMemoryWarning is called, it means your app is using too much memory (compare with memory of device), and you should release any additional memory used by your view controller to reduce the memory of your app. If the memory app gets over the memory of device, iOS will kill your app immediately. "resources that can be recreated" means somethings you can recreate it again at somewhere, you don't need them now (don't need to put them in the memory). And you can release it when get didReceiveMemoryWarning.

Here is another detail topic: ios app maximum memory budget