ios - UITableViewCell 没有可见的@interface 声明选择器 didReceiveMemoryWarning

Question

谁能告诉我为什么会出现这个错误

No visible @interface for UITableViewCell declares the selector didReceiveMemoryWarning

当使用下面的代码时:

- (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
}

Answer 1

因为 didReceiveMemoryWarning() 是一个可从 UIViewController 类继承的方法，它在 UITableViewCell 类(继承自 >UIView).

此外，didReceiveMemoryWarning()在系统检测到内存不足时被调用:

open func didReceiveMemoryWarning() 
// Called when the parent application receives a memory warning. 
// On iOS 6.0 it will no longer clear the view by default.