Question

视频按钮位于导航栏的ViewController中，按下后，它将立即以纵向模式显示视频。如果我手动旋转，它只会在横向上。按下按钮后如何立即以横向模式观看视频？我需要ViewController处于纵向模式，只有视频处于横向模式。

这是ViewController.m文件：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

-(IBAction)backbutton
{
    ChapterTableViewController *chapterTable = [self.storyboard instantiateViewControllerWithIdentifier:@"chapterTable"];

    [self.navigationController presentModalViewController:chapterTable animated:YES];
}

-(IBAction)playvideo
{
    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
                        pathForResource:@"One Piece Episode 180" ofType:@"mp4"]];

    MPMoviePlayerViewController *playercontroller = [[MPMoviePlayerViewController alloc] initWithContentURL:url];

    [self presentMoviePlayerViewControllerAnimated:playercontroller];
    playercontroller.moviePlayer.movieSourceType = MPMovieSourceTypeFile;
    [playercontroller.moviePlayer play];
    playercontroller = nil;
} 

@end

Answer 1

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:NO];

[[self view] setBounds:CGRectMake(0, 0, 480, 320)];
[[self view] setCenter:CGPointMake(160, 240)];
[[self view] setTransform:CGAffineTransformMakeRotation(M_PI / 2)];

对于全屏播放，使用MPMoviePlayerViewController，然后以横向格式启动和播放，使用MPMoviePlayerViewController类上的“shouldAutorotateToInterfaceOrientation”方法。

看起来像这样：

[yourInstanceOfMPMoviePlayerViewController shouldAutorotateToInterfaceOrientation: UIInterfaceOrientationLandscapeRight];

Answer 2

请为ViewController.m尝试此操作，并在该视图中尝试使用此ViewController

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

Answer 3

您可以选择用户天气，他想在ViewController文件中以哪种模式录制视频，然后您可以在视频控制器中检查以下条件，这样就可以解决您的问题。这对我有用。

- (int)deviceOrientationDidChange
{   
    UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation];
    int val;
    if (deviceOrientation == UIDeviceOrientationPortrait){
        orientation = AVCaptureVideoOrientationPortrait;
        val=1;
        NSLog(@"AVCaptureVideoOrientationPortrait");
    }
    else if (deviceOrientation == UIDeviceOrientationPortraitUpsideDown){
        orientation = AVCaptureVideoOrientationPortraitUpsideDown;
        val=2;
        NSLog(@"AVCaptureVideoOrientationPortraitUpsideDown");
    }

    // AVCapture and UIDevice have opposite meanings for landscape left and right (AVCapture orientation is the same as UIInterfaceOrientation)
    else if (deviceOrientation == UIDeviceOrientationLandscapeLeft){
        orientation = AVCaptureVideoOrientationLandscapeRight;
        val=3;
        NSLog(@"AVCaptureVideoOrientationLandscapeRight");

    }
    else if (deviceOrientation == UIDeviceOrientationLandscapeRight){
        orientation = AVCaptureVideoOrientationLandscapeLeft;
        val=4;
        NSLog(@"AVCaptureVideoOrientationLandscapeLeft");

    }
    return val;
    // Ignore device orientations for which there is no corresponding still image orientation (e.g. UIDeviceOrientationFaceUp)
}

如何自动将视频旋转到横向？

3 个答案: