UIButton防止被重复点击

一、避免屏幕内多个 UIButton 被重复点击

• 1.在 AppDelegate 中添加[[UIButton appearance] setExclusiveTouch:YES];
• 2.button.exclusiveTouch = YES;

二、避免一个 UIButton 被多次点击

• 1.在每次点击时先取消之前的操作

- (void)buttonClicked:(id)sender {
	//这里是关键，点击按钮后先取消之前的操作，再进行需要进行的操作
	[[self class]cancelPreviousPerformRequestsWithTarget:self selector:@selector(buttonClicked:) object:sender];
	[self performSelector:@selector(buttonClicked:) withObject:sender afterDelay:0.2f];
}

• 2.点击后设为不可被点击的状态，n 秒后恢复

-(void)buttonClicked:(id)sender{
	self.button.enabled =NO;
	[selfperformSelector:@selector(changeButtonStatus)withObject:nilafterDelay:1.0f];//防止重复点击
}

-(void)changeButtonStatus{
	self.button.enabled =YES;
}

• 3.使用 runtime，设置 n 秒内不会被重复点
  • (1)导入 objc/runtime.h
  • (2)创建 UIControl 或 UIButton 的分类