ios - 停止 animateWithDuration

Question

我在 viewController 中有一个循环动画

- (void)moveAnimating
{
    [UIView animateWithDuration:2.0f animations:^{
        _backgroundView.center = CGPointMake(self.center.x , self.center.y - kMoveDistanceHeight);
     } completion:^(BOOL finished) {
        if (_backgroundView.animating)
        {
           [_backgroundView moveAnimating];
        }
    }];
}

当 viewController viewWillDisappear 时我想停止这个动画:

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    _backgroundView.animating = NO;
    [_backgroundView.layer removeAllAnimations];
}

因为动画与dismissViewcontrollerAnimation冲突。

问题:

[_backgroundView.layer removeAllAnimations];

不工作...

如何停止动画？

帮帮我，谢谢。

Answer 1

您正在正确取消动画:

[_backgroundView.layer removeAllAnimations];

但是你可能会忘记导入 QuartzCore.h:

#import <QuartzCore/QuartzCore.h>

如果没有帮助试试这个:

[CATransaction begin];
[_backgroundView.layer removeAllAnimations];
[CATransaction commit];

如果没有帮助尝试将这一行添加到上面的代码中:

[CATransaction flush];