如何更新 StatusBar 样式作为自定义转换的一部分

我使用的是 iOS 7UIviewControllerAnimatedTransitioning呈现模式的协议ViewController带有自定义动画。动画工作正常，但是我想要新呈现的ViewController具有与当前 VC 不同的状态栏样式。

我看到的是-(UIStatusBarStyle)preferredStatusBarStyle在 PRESENTING 上被叫去ViewController（事实上​​有好几次）并且从来没有在新推出的ViewController。如果我删除自定义动画，状态栏的所有内容都会按我的预期工作。

我需要在 animateTransition 函数中做一些特殊的事情来更新根视图控制器或其他东西吗？我尝试过手动设置状态栏[UIApplication sharedApplication] setStatusBarStyle但它不起作用（我想是因为我正在使用基于 ios 7 视图控制器的状态栏样式）。

这是我的 animateTransition 代码：

- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    UICollectionViewCell *activeCell;
    if ([self.collectionView.visibleCells containsObject:self.cellForActiveIdeaVC]) {
        activeCell = self.cellForActiveIdeaVC;
    }

    UIView *container = transitionContext.containerView;
    UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    UIView *fromView = fromVC.view;
    UIView *toView = toVC.view;

    CGRect beginFrame;
    if (activeCell) {
        beginFrame = [container convertRect:activeCell.bounds fromView:activeCell];
    } else {
        beginFrame = CGRectMake(container.width / 2, container.height / 2, 0, 0);
    }

    CGRect endFrame = [transitionContext initialFrameForViewController:fromVC];

    UIView *move = nil;
    if (toVC.isBeingPresented) {
        toView.frame = endFrame;
        move = [toView snapshotViewAfterScreenUpdates:YES];
        move.frame = beginFrame;
    } else {
        if (activeCell) {
            move = [activeCell snapshotViewAfterScreenUpdates:YES];
        } else {
            move = [fromView snapshotViewAfterScreenUpdates:YES];
        }
        move.frame = fromView.frame;
        [fromView removeFromSuperview];
    }
    [container addSubview:move];

    [UIView animateWithDuration:.5
                          delay:0
         usingSpringWithDamping:700
          initialSpringVelocity:15
                        options:0
                     animations:^{
                         move.frame = toVC.isBeingPresented ?  endFrame : beginFrame;
                     }
                     completion:^(BOOL finished) {
                         [move removeFromSuperview];

                         if (toVC.isBeingPresented) {
                             toView.frame = endFrame;
                             [container addSubview:toView];
                         } else {
                             if (self.cellForActiveIdeaVC) {
                                 self.cellForActiveIdeaVC = nil;
                             }
                         }

                         [transitionContext completeTransition:YES];
                     }];
}

非常感谢任何指点！

使用 iOS 7 自定义转换，可以呈现非全屏的视图控制器，因此不会影响状态栏的外观。您必须明确告诉 iOS，您的自定义呈现视图控制器实际上将控制状态栏的外观。

UIViewController *controllerToPresent = [...]
controllerToPresent.modalPresentationStyle = UIModalPresentationStyleCustom;
controllerToPresent.modalPresentationCapturesStatusBarAppearance = YES;

[self presentViewController:controllerToPresent animated:YES completion:nil];

有一些更多信息请点击此处 http://lxcid.com/2013/11/29/status-bar-remains-unchange-when-view-controller-is-pushed-presented-modally/。希望有帮助！