Question

我的动画方法有问题

我为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viewController中，我创建了属性

@implementation MapVC {
    CalloutView *calloutView;
}

然后如果我尝试在任何方法中创建calloutView都可以正常使用动画，但是如果我在Google地图方法中返回视图

- (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;
}

我的动画立即在calloutView中运行，并立即调用完成，并再次调用runningLabel方法，因此它不能像它一样工作。所有帧都很好，timInterval总是超过4秒。我尝试编写像10.0这样的静态时间间隔，但动画再次立即运行，并且完成块中的标志finished始终为YES。所以它在一秒钟内调用超过100次=（

我在iOS 7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。

此Google地图方法有什么问题，为什么我的动画会立即运行？

PS minX，width - 我的类别。 minX set frame.origin.X。这些类别都很好。

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];
        }];
}

ios 7 UIView animateWithDuration：..立即运行

1 个答案: