UIView动画在iPad方向改变时行为不端

时间:2010-10-20 09:52:42

标签: iphone objective-c ipad

我正在使用此代码进行UIView过渡效果

[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Landscape Left中旋转ipad时,它表现得很奇怪,如果我给出条件是否景观是否比UIViewAnimationTransitionCurlDown还要好,那么动画仍然与在Landscape-right方式下的动画不同

3 个答案:

答案 0 :(得分:2)

我有完全相同的问题。 对于那些很难理解问题的人:

当你做"蜷缩"在横向模式下,通过右侧的按钮,页面开始从右上角向左下翻转(意思是,您用右手翻动页面,然后向书的左侧移动。也意味着书籍和# 39; s绑定在左边。)

当你做同样的事情时,但是左边的按钮,即使正确旋转内容,动画也不会旋转,说" shouldAutorotateToInterfaceOrientation:True"在vc。因此,动画从左下角到右上角,给人的印象是现在书籍的装订就在右边。

一些代码来说明:

- (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;
}

答案 1 :(得分:1)

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YES,则在坐标反转时可以使用UIView的帧。

你可以使用方法willAnimateRotationToInterfaceOrientation和didAnimateRotationToInterfaceOrientation在旋转前停止动画,并在之后恢复它。

答案 2 :(得分:0)

Ben G明确地解释了这个问题。我找到了一个解决方法,但不知道潜在的原因。我的解决方法是:UIViewAnimationOptionTransitionCurlUp