Iphone 更改iPad方向时，UIView动画会出现错误行为

我使用此代码来实现UIView转换效果

[UIView beginAnimations: nil context: nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];
[UIView commitAnimations];

现在的问题是，当我在横向向左旋转ipad时，它的行为很奇怪，如果我给出条件，如果横向向左，而不是UIViewAnimationTransitionCurlDown，动画仍然与横向向右旋转时的动画不同

您是否尝试过使用：

[UIView setAnimationBeginsFromCurrentState:NO];

如果在旋转更改期间启动动画，并且该值设置为“是”，则在坐标反转时可能会使用UIView的帧

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您可以使用WillAnimateRotationInterfaceOrientation和DidAnimateRotationInterfaceOrientation方法在旋转之前停止动画，然后在旋转之后继续。

我遇到了完全相同的问题。 对于难以理解问题的人：

当你在横向模式下“卷曲”时，按下右边的按钮，页面开始从右上角翻转到左下角（这意味着你用右手翻过页面，然后移到书的左边。也意味着书的装订在左边）

当您执行同样的操作时，但使用左侧的按钮，动画不会旋转，即使正确旋转内容，在vc中说“shouldAutorotateToInterfaceOrientation:True”。因此，动画从左下角转到右上角，给人的印象是，书籍的装订现在位于右侧

一些代码可以说明：

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self)
    {
        view1 = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, 1024, 768)];
        [view1 setBackgroundColor:[UIColor greenColor]];
        [view1 setFont:[UIFont systemFontOfSize:80]];
        [view1 setText:@"VIEW 1"];

        view2 = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, 1024, 768)];
        [view2 setBackgroundColor:[UIColor redColor]];
        [view2 setFont:[UIFont systemFontOfSize:80]];
        [view2 setText:@"VIEW 2"];
    }
    return self;
}


-(void)didSwipeNext
{
    [self performSelector:@selector(swipePrevious) withObject:nil afterDelay:1];
}

-(void)didSwipePrevious
{
    [self performSelector:@selector(swipeNext) withObject:nil afterDelay:1];
}

-(void)swipeNext
{
    [UIView beginAnimations:@"curl" context:NULL];
    [UIView setAnimationDuration:1];
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationBeginsFromCurrentState:NO];
    [UIView setAnimationDidStopSelector:@selector(didSwipeNext)];

    [view1 removeFromSuperview];
    [self.view addSubview:view2];

    [UIView commitAnimations];
}

-(void)swipePrevious
{

    [UIView beginAnimations:@"curl" context:NULL];
    [UIView setAnimationDuration:1];
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationBeginsFromCurrentState:NO];
    [UIView setAnimationDidStopSelector:@selector(didSwipePrevious)];

    [view2 removeFromSuperview];
    [self.view addSubview:view1];

    [UIView commitAnimations];
}

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
    [self.view addSubview:view1];
    [self performSelector:@selector(swipeNext) withObject:nil afterDelay:1];
}


// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}

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Ben G清楚地解释了这个问题。我找到了解决办法，但不知道根本原因。我的解决方法是：

什么是“行为怪异”？它的动画是颠倒的动画与它的横向动画不同，对吗