ios - 关闭 subview 时如何设置计时器

Question

我尝试打开两个 subview 并及时关闭，所以我这样尝试

- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
    if(event.type == UIEventSubtypeMotionShake)
    {
        [self shakeView];
        //[self open];
    }
}

-(void)shakeView
{
    [UIView animateWithDuration:2.8
                     animations:^{
                         //OPEN
                         firstView.frame = CGRectMake(0, -40, self.view.frame.size.width, self.view.frame.size.height/2);
                         secondView.frame = CGRectMake(0, 260, self.view.frame.size.width, self.view.frame.size.height/2);

                         // Its final location
                     }
                     completion:^(BOOL finished) {
                         // Closed 
                         firstView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height/2);
                         secondView.frame = CGRectMake(0,230 , self.view.frame.size.width, self.view.frame.size.height/2);
                     }
    ];
}

我需要两个 View 改变位置然后到达相同的位置，但是当我调用这两种方法时打开速度慢但关闭速度非常快。

关闭 View 时如何设置计时器？

Answer 1

你的结尾部分；

firstView.frame=CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height/2);

secondView.frame=CGRectMake(0,230 , self.view.frame.size.width, self.view.frame.size.height/2);

不在动画 block 内。打开的持续时间为 2.8 秒，但关闭将在没有任何持续时间的情况下执行。

将结束部分放在另一个动画 block 中。

[UIView animateWithDuration:0.4 animations:^{
    firstView.frame=CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height/2);

    secondView.frame=CGRectMake(0,230 , self.view.frame.size.width, self.view.frame.size.height/2);
     }completion:^(BOOL finished){
     }];