Question

在我的UISplitViewController中，我希望仅在纵向方向或我的详细视图控制器未显示控制器类型MyFullScreenViewController时才允许显示主视图控制器。我已经实现了UISplitViewControllerDelegate来恰当地指出这一点。

-(BOOL)splitViewController:(UISplitViewController *)svc
  shouldHideViewController:(UIViewController *)vc
             inOrientation:(UIInterfaceOrientation)orientation
{
    if (UIInterfaceOrientationIsPortrait(orientation) ||
        [[self.navigationController topViewController] isKindOfClass:[MyFullScreenViewController class]])
    {
        return YES;
    }
    return NO;
}

但是，UISplitViewController仅在旋转期间调用委托。因此MyFullScreenViewController实现了viewWillAppear:animated和viewWillDisappear:animated。

- (void)viewWillAppear:(BOOL)animated
{
    [self fakeRotationOfSplitViewController];
    [super viewWillAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
    [self fakeRotationOfSplitViewController];
    [super viewWillDisappear:animated];
}
-(void)fakeRotationOfSplitViewController
{
    UIInterfaceOrientation orientation = [[UIDevice currentDevice] orientation];
    CGFloat duration = 1.0f;
    CGFloat fakeDuration = 0.0f;

    [UIView animateWithDuration:duration
                          delay:0.0f
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         [[self splitViewController] willAnimateRotationToInterfaceOrientation:orientation
                                                                                      duration:fakeDuration];
                         [[self splitViewController] willRotateToInterfaceOrientation:orientation
                                                                             duration:fakeDuration];
                         [[self splitViewController] didRotateFromInterfaceOrientation:orientation];
                     } completion:^(BOOL finished) {

                     }];

}

除动画外，一切都有效。主视图控制器立即消失，并在UINavigationController对象的推动之前和弹出动画之前重新出现。

文档不清楚是否应在动画块中调用willRotateToInterfaceOrientation:duration:和didRotateFromInterfaceOrientation:，但我怀疑它们不应允许视图控制器为响应消息而对其进行动画处理。但是，如果它们落在动画块之外，主视图控制器有时会消失。

Answer 1

动画无效，因为我从未在viewWillLayoutSubviews之后致电didRotateFromInterfaceOrientation:。

[UIView animateWithDuration:duration
                          delay:0.0f
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         [[self splitViewController] willAnimateRotationToInterfaceOrientation:orientation
                                                                                      duration:fakeDuration];
                         [[self splitViewController] willRotateToInterfaceOrientation:orientation
                                                                             duration:fakeDuration];
                         [[self splitViewController] didRotateFromInterfaceOrientation:orientation];
                         [[self splitViewController] viewWillLayoutSubviews];
                         [[[self splitViewController] view] layoutSubviews];
                     } completion:^(BOOL finished) {

                     }];

动画UISplitViewController的主细节控制器的可见性

1 个答案: