我怎么能中断/停止动画，当我转？ [英] how can I interrupt/stop animation when I rotate?

问题描述

例如，我用的是动画景观状态，持续时间为5.0S，从状态A至B;在5.0S的中间，我可以从横向旋转iPad上的画像。我希望动画停止，使UI状态C I旋转后。

我不知道我的问题是清楚的。
我该怎么做？

我的动画code：

   - （无效）moveImage：（UIImageView的*）图像持续的时间：（NSTimeInterval）持续时间X：（NSNumber的*）DX Y：（NSNumber的*）DY
{    //设置动画
    [UIView的beginAnimations：无背景：NULL];
    [UIView的setAnimationDuration：时间];
    [UIView的setAnimationCurve：UIViewAnimationCurveEaseInOut];
    [UIView的setAnimationBeginsFromCurrentState：YES];    //变换矩阵
    浮FX = [DX的floatValue]
    浮FY = [DY的floatValue]    CGAffineTransform变换= CGAffineTransformMakeTranslation（FX，FY）;
    // CGAffineTransform变换= CGAffineTransformMakeRotation（0.4）;
    // CGAffineTransform变换= CGAffineTransformMakeScale（2.0，2.0）;    image.transform =变换;    //提交更改
    [UIView的commitAnimations];
}
 

解决方案

1. <一个href=\"http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreAnimation_guide/Articles/AnimatingLayers.html\"相对=nofollow>启动和停止明确动画 对启动和停止核心动画节


2. <一个href=\"http://developer.apple.com/library/ios/#documentation/uikit/reference/UIViewController_Class/Reference/Reference.html\"相对=nofollow> willRotateToInterfaceOrientation：持续时间 通知用户旋转开始时

因此​​，所有需要做的就是从2 1））

For example, I use the animation in landscape status, duration is 5.0s, from status A to B; in the middle of the 5.0s, I may rotate the iPad from landscape to portrait. I want the animation stopped and make the UI status to C after I rotated.

I'm not sure my question is clear. How can I do that?

my animation code:

- (void)moveImage:(UIImageView *)image duration:(NSTimeInterval)duration x:(NSNumber*)dx y:(NSNumber*)dy
{

    // Setup the animation
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:duration];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    [UIView setAnimationBeginsFromCurrentState:YES];

    // The transform matrix
    float fx = [dx floatValue];
    float fy = [dy floatValue];

    CGAffineTransform transform = CGAffineTransformMakeTranslation(fx, fy);
    //CGAffineTransform transform = CGAffineTransformMakeRotation(0.4);
    //CGAffineTransform transform = CGAffineTransformMakeScale(2.0, 2.0);

    image.transform = transform;

    // Commit the changes
    [UIView commitAnimations];    
}

解决方案

1. Starting and Stopping Explicit Animations has a section on starting and stopping core animations
2. willRotateToInterfaceOrientation:duration notifies you when the rotation begins.

So all have to do is 1) from 2)

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