ios 动画

//开启动画效果代码
    [UIView animateWithDuration:2 animations:^{
        //动画
    } completion:^(BOOL finish){
        //最后位置
        self.searchText.frame = CGRectMake (0,100,200,31);
    }];

//长按闪动效果

 [UIView animateWithDuration:0.3 
                          delay:0 
                        options:UIViewAnimationOptionAllowUserInteraction 
                     animations:^{
                         cell.contentView.backgroundColor = [UIColor orangeColor];
                         cell.contentView.layer.shadowOpacity = 0.7;
                     } 
                     completion:nil
     ];
[UIView animateWithDuration:0.3 
                          delay:0 
                        options:UIViewAnimationOptionAllowUserInteraction 
                     animations:^{  
                         cell.contentView.backgroundColor = [UIColor redColor];
                         cell.contentView.layer.shadowOpacity = 0;
                     }
                     completion:nil
     ];