Question

我的应用程序需要在所有视图的纵向方向上，以及一个需要支持纵向和lansdscape orietation的视图（UIWebview）。

要设置默认的纵向方向，我将其放在我的app delegate：

中

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
//NSLog(@"PlayWithWSWithLibAppDelegate -- supportedInterfaceOrientationsForWindow");
if(flagOrientationAll == YES){
    return UIInterfaceOrientationMaskAll;
} else {
    return UIInterfaceOrientationMaskPortrait;
}}

我已经设法使用此方法将我的webview安排为关于用户方向的纵向/横向（也可以从stackoverflow获取）

-(void)viewWillAppear:(BOOL)animated
{

AppDelegate *delegate = (AppDelegate *) [[UIApplication sharedApplication] delegate];
delegate.flagOrientationAll = YES;
}

-(void)viewWillDisappear:(BOOL)animated
{
//NSLog(@"viewWillDisappear -- Start");
AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
delegate.flagOrientationAll = NO;
}

使用两个UIView呈现肖像和风景：

-(void)viewWillLayoutSubviews {
    BOOL layoutIsPortrait = UIDeviceOrientationIsPortrait(self.interfaceOrientation);
    if (layoutIsPortrait) {
        self.view = self.pView;
    [self.pView addSubview:pwebView];
}else{
    self.view = self.lView;
    [self.lView addSubview:lwebView];
}}

然后使用此代码关闭webview：

- (IBAction)doneButtonTapped:(id)sender
{
   [self.navigationController popViewControllerAnimated:YES];
}

然而，当它在横向状态下消失时，前一个屏幕（调用webview的屏幕）以横向显示而不是默认（纵向）。在webview解雇之后我怎么能以肖像形式出现呢？

感谢

Answer 1

您应该为每个viewController实施支持的方向：

就像我写的here：

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    //Choose your available orientation, you can also support more tipe using the symbol |
    //e.g. return (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight)
    return (UIInterfaceOrientationMaskPortrait);
}

Answer 2

Swift 3.0：
（添加到调用可观察环境的ViewController）

override var shouldAutorotate: Bool {
    return true
}

override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
    return .portrait
}

在风景视图后返回肖像

2 个答案: