问如何在导航到UIViewController时将其旋转到其支持的界面方向？
EN

Stack Overflow用户

提问于 2016-01-07 12:38:18

回答 2查看 542关注 0票数 2

我有一个视图控制器(带有子视图控制器)，它被锁定在纵向，使用以下代码来完成此操作：

- (UIInterfaceOrientationMask) supportedInterfaceOrientations {
    if ([self.centerViewController respondsToSelector:@selector(supportedInterfaceOrientations)]) {
        return [self.centerViewController supportedInterfaceOrientations];
    }
    return UIInterfaceOrientationMaskAll;
}

这非常有效，如果需要锁定视图，我可以“覆盖”当前centerViewController中的supportedInterfaceOrientations，如果希望视图支持所有内容，则可以省略它。

问题是，被锁定的视图在导航时不会旋转到其支持的方向。一个视图锁定在纵向视图中，但当在横向视图中显示另一个视图并导航到此视图时，即使此视图不支持横向视图，也会在横向视图中显示该视图。

如何确保视图在导航时旋转到允许的方向？

ios

cocoa-touch

ios8

ios9

回答 2

Stack Overflow用户

发布于 2016-01-07 12:43:07

如果您在supportedInterfaceOrientations中返回了受支持的方向，我将自动旋转。

#pragma mark - Orientation Handling
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (BOOL)shouldAutorotate {// iOS 6 autorotation fix
    return YES;
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {// iOS 6 autorotation fix
    return UIInterfaceOrientationMaskLandscapeLeft;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {// iOS 6 autorotation fix
    return UIInterfaceOrientationPortrait;
}

- (void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {
    }
}

票数 0

Stack Overflow用户

发布于 2016-01-07 12:58:08

在AppDelegate.h中添加以下属性

@property (readwrite) BOOL restrictRotation;

在AppDelegate.m中添加以下代码

-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    if(self.restrictRotation)
        return UIInterfaceOrientationMaskLandscape;
    else
        return UIInterfaceOrientationMaskPortrait;
}

在要限制方向的ViewController.m中添加以下代码：

-(BOOL)shouldAutorotate
{
    return NO;
}

-(void) restrictRotation:(BOOL) restriction
{
    AppDelegate* appDelegate = (AppDelegate*)[UIApplication sharedApplication].delegate;
    appDelegate.restrictRotation = restriction;
}

- (NSUInteger) supportedInterfaceOrientations {
    // Return a bitmask of supported orientations. If you need more,
    // use bitwise or (see the commented return).
    return UIInterfaceOrientationMaskLandscape;
    // return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    //  (iOS 6)
    //  Prefer (force) landscape
    return UIInterfaceOrientationLandscapeRight;
}