ios - 替代私有(private)-[UIDevice setOrientation :] for forcing camera overlay into portrait mode

Question

我正在为 iPad 制作相机应用。我希望相机应用程序仅在纵向模式下工作。我不得不进行旋转观察，并强制设备像这样使用纵向模式:

UIImagePickerController in Landscape

我认为这是私有(private) API；帖子中的一些用户认为是。

如果是这样，我还可以使用其他什么解决方法来强制叠加层仅保持纵向模式？如果我不添加此代码，它会旋转到纵向和横向模式。

    //Is this private?
    @interface UIDevice ()
    -(void)setOrientation:(UIDeviceOrientation)orientation;
    @end

    -(IBAction)InitiateCamera
    {

    overlayview = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 768, 1024)];
    ...
    ...

    //monitor device rotation
        [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:) name:UIDeviceOrientationDidChangeNotification object:nil];




        //launch camera
        [self presentViewController:picpicker animated:YES completion:nil];


    }



    - (void) didRotate:(NSNotification *)notification
    {


//IS THIS PRIVATE?
        //Maintain the camera in portrait orientation
        [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortrait];

    }

    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
    {
        return UIInterfaceOrientationIsPortrait(interfaceOrientation);
    }

    -(NSUInteger)supportedInterfaceOrientations
    {

        return UIInterfaceOrientationMaskPortrait;
    }

    - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
    {
        return UIInterfaceOrientationPortrait;
    }

Answer 1

请改用此代码。我提交了一个应用程序，它在 iTunes 上获得了批准

- (void) didRotate:(NSNotification *)notification
{
    [[UIDevice currentDevice] performSelector:NSSelectorFromString(@"setOrientation:") withObject:(__bridge id)((void*)UIInterfaceOrientationPortrait)];

}