使用performSelector：withObject：afterDelay：带有非对象参数 [英] Using performSelector:withObject:afterDelay: with non-object parameters

问题描述

我想在表视图上稍微延迟地调用 setEditing：animated：。通常，我会使用 performSelector：withObject：afterDelay：，但

I want to invoke setEditing:animated: on a table view with a slight delay. Normally, I'd use performSelector:withObject:afterDelay: but

1. pSwOaD only接受一个参数


2. 第二个参数 setEditing：animated：是原始BOOL - 不是对象

1. pSwOaD only accepts one parameter
2. the second parameter to setEditing:animated: is a primitive BOOL - not an object

在过去，我将在自己的类中创建一个虚方法，如 setTableAnimated ，然后调用 [self performSelector：@selector（setTableAnimated）withObject：nil afterDelay：0.1f 但是对我感觉很丑。

In the past I would create a dummy method in my own class, like setTableAnimated and then call [self performSelector:@selector(setTableAnimated) withObject:nil afterDelay:0.1f but that feels kludgy to me.

有更好的方法吗？

推荐答案

为什么不使用dispatch_queue？

Why not use a dispatch_queue ?

  double delayInSeconds = 2.0;
  dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
  dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
      [tableView setEditing …];
  });

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