iOS 7 UIView动画与持续时间：...立即运行

Question

我在动画制作方法上有问题

我已经为GoogleMap创建了自己的CalloutBubble

@interface CalloutView : UIView
@property (nonatomic) MapMarker *marker;
@end

@implementation {   
    UIView *titleView;
    UILabel *titleLabel, *addressLabel;
}

//another init methods aren't shown

- (void)setMarker:(MapMarker *)marker
{
    _marker = marker;
    titleLabel.text = marker.university.name;
    addressLabel.text = marker.university.address;
    [titleLabel sizeToFit];
    titleLabel.minX = 0;
    [titleLabel.layer removeAllAnimations];
    if (titleLabel.width > titleView.width)
        [self runningLabel];
}

- (void)runningLabel
{
    CGFloat timeInterval = titleLabel.width / 70;
        [UIView animateWithDuration:timeInterval delay:1.0 options:UIViewAnimationOptionOverrideInheritedDuration | UIViewAnimationOptionRepeat animations:^{
            titleLabel.minX = -titleLabel.width;
        } completion:^(BOOL finished) {
            titleLabel.minX = titleView.width;
            [self runningLabel];
        }];
}

@end

在我的视图控制器中，我创建属性

@implementation MapVC {
    CalloutView *calloutView;
}

然后，如果我尝试用任何方法创建calloutView，所有这些都可以很好地处理动画，但如果我用Google map方法返回视图

- (UIView *)mapView:(GMSMapView *)mapView markerInfoWindow:(GMSMarker *)marker
{
    if (!calloutView)
        calloutView = [[CalloutView alloc] initWithFrame:CGRectMake(0, 0, 265, 45.5)];
    calloutView.marker = (MapMarker *)marker;
    return calloutView;
}

我的动画会立即在calloutView中运行，也会立即调用completion，然后再次调用runningLabel方法，因此它不会像必须的那样工作。所有帧都正常，并且始终超过4秒。我尝试编写静态时间间隔，如10.0，但动画再次立即运行，并且在完成块中标记“完成”，始终为“是”。所以它在一秒钟内呼叫了100多次=(

我在iOS7中创建应用程序。我尝试使用不同的动画选项：

UIViewAnimationOptionLayoutSubviews           
UIViewAnimationOptionAllowUserInteraction     
UIViewAnimationOptionBeginFromCurrentState    
UIViewAnimationOptionRepeat                   
UIViewAnimationOptionAutoreverse              
UIViewAnimationOptionOverrideInheritedDuration 
UIViewAnimationOptionOverrideInheritedCurve   
UIViewAnimationOptionAllowAnimatedContent     
UIViewAnimationOptionShowHideTransitionViews 
UIViewAnimationOptionOverrideInheritedOptions  

但没有结果。

这个谷歌地图方法有什么错，为什么我的动画会立即运行？

PS minX，宽度-我的类别。minX设置frame.origin.X。这个类别都很好。

Answer 1

删除UIViewAnimationOptionRepeat选项或注释完成Block minX设置：

- (void)runningLabel
{
    CGFloat timeInterval = titleLabel.width / 70;
        [UIView animateWithDuration:timeInterval delay:1.0 options:UIViewAnimationOptionOverrideInheritedDuration | UIViewAnimationOptionRepeat animations:^{
            titleLabel.minX = -titleLabel.width;
        } completion:^(BOOL finished) {
            //titleLabel.minX = titleView.width; //this is the problem, you should not set minX again while  UIViewAnimationOptionRepeat also is animation option
            [self runningLabel];
        }];
}