在 UIView beginAnimations 完成后执行操作

Posted 2023-03-12

【中文标题】在 UIView beginAnimations 完成后执行操作

【英文标题】：Doing an action after UIView beginAnimations is finish

【发布时间】：2016-08-02 09:00:27

【问题描述】：

我想在 UIView 动画完成后做一个动作。

    if (flipStateHav1 == 1 && btnFrontHav1.tag == 1) 

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.8];

    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:buttonContainerHav1 cache:YES];
    [self.buttonContainerHav1 bringSubviewToFront:btnBackHav1];

    [UIView commitAnimations];

    //It is this code below I want to run after the animation is finish.
    buttonContainerHav1.userInteractionEnabled = YES;
    flipTurns = 0;
    flipStateHav2 = 0;
    par = 0;

我尝试过使用

    completion:^(BOOL finished)
    // your code
];

但不要让它工作，可能我做错了什么。

更新代码 该按钮连接到两个动作。

- (IBAction) buttonPressedFlipHav1 

if (flipTurns == 0 || flipTurns == 1) 

    flipTurns += 1;

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.8];

        [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:buttonContainerHav1 cache:YES];
        [self.buttonContainerHav1 bringSubviewToFront:btnFrontHav1];
        buttonContainerHav1.userInteractionEnabled = NO;
        flipStateHav1 = 1;
        btnFrontHav1.tag = 1;

        autoFlipCount += 1;

        if (flipStateHav1 == 1 && flipStateHav2 == 1) 
            par = 1;
            parHav = 1;
            btnFrontHav1.tag = 0;
            btnFrontHav2.tag = 0;

            flipTurns = 0;
            autoFlipCount = 0;

            if (parHav == 1 && parRiddare == 1 && parSkold == 1) 

                autoFlipTimer = [NSTimer scheduledTimerWithTimeInterval:3.0f target:self selector:@selector(autoFlipAll) userInfo:nil repeats:NO];

            
        

    completion:^(BOOL finished) 

    NSLog(@"autoFlipCount = %d",autoFlipCount);
    NSLog(@"Flipturns = %d",flipTurns);
    ];

  

而且也和这个动作有关。

- (IBAction) autoFlip 
      autoFlipTimer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(callAfterFiveSecond) userInfo:nil repeats:NO];

5 秒后它跳转到这个 if 语句。 更新

if (flipStateHav1 == 1 && btnFrontHav1.tag == 1) 

    [UIView animateWithDuration:0.8 animations:^

        [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:buttonContainerHav1 cache:YES];
        [self.buttonContainerHav1 bringSubviewToFront:btnBackHav1];

     completion:^(BOOL finished) 
        buttonContainerHav1.userInteractionEnabled = YES;
        flipTurns = 0;
        flipStateHav1 = 0;
        par = 0;
    ];

【问题讨论】：

UIView 的beginAnimations 不鼓励用于比 ios4 更新的任何东西，您应该改用基于块的动画。

【参考方案1】：

此代码可能对您有所帮助

[UIView animateWithDuration:0.4 animations:^
   //animation code here`
 completion:^(BOOL finished) 
      //code after animation here
];

【讨论】：

感谢您的回答。我确实尝试了你的代码。但是持续时间不起作用。翻转动画很快。我试图改变 animateWithDuration:2.0.我做错了什么。

@user3266053 你更新的代码仍然使用beginAnimations，commitAnimations，这是错误的。

谢谢@Abizern，我已经更新了代码，我得到了我想要的结果。