Question

动画完成后如何隐藏UIImageView？当我进入视图时，我的动画工作正常。我希望能够在动画完成后隐藏图像。我怎么能这样做？

-(void) animate
{
    NSLog(@"Animate");

    CGPoint startPoint = [pickerCircle center];
    CGPoint endPoint = [pickerButton1 center];

    CGMutablePathRef thePath = CGPathCreateMutable();
    CGPathMoveToPoint(thePath, NULL, startPoint.x, startPoint.y);
    CGPathAddLineToPoint(thePath, NULL, endPoint.x, endPoint.y);

    CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    animation.duration = 3.f;
    animation.path = thePath;
    animation.repeatCount = 2;
    animation.removedOnCompletion = YES;
    [pickerCircle.layer addAnimation:animation forKey:@"position"];
    pickerCircle.layer.position = endPoint;
}

Answer 1

将动画的委托属性设置为self，如下所示：

animation.delegate = self;

然后你可以使用：

-(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
    // hide your UIImage here
}

动画完成后会调用它。

Answer 2

你尝试完成了吗？ Here example 4.2有一个关于使用完成显示和隐藏视图的示例。我不太了解动画，但我认为完成应该有效。

动画完成后如何隐藏我的UIImageView？

2 个答案: