問題描述

點擊cell的時候，讓cell里面的透明度降低，松開手指透明度恢復。
類似支付那樣

實現方法

重寫UIResponder的touchesBegan和touchesEnded

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    [super touchesBegan:touches withEvent:event];
   
    [UIView animateWithDuration:0.5 animations:^{
        self.topViewImg.alpha = 0.7;
        
        self.bottomlable.alpha = 0.7;
    }];
    
  
    
}


-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

      [UIView animateWithDuration:0.5 animations:^{
          self.topViewImg.alpha = 1;
    
          self.bottomlable.alpha = 1;
      }];

    
     [super touchesEnded:touches withEvent:event];
}

效果圖

效果圖

拓展

因為touchesBegan和touchesEnded是uiview的父類的方法，所以所有的view都可以實現這種效果。
估計uibutton點擊閃動效果也是這樣實現的