iphone - 自动旋转从 UIWebView 播放的视频到横向模式

Question

我有一个 UIWebView，这样填充:

[myWebView loadHTMLString:@"<iframe src=\"http://www.youtube.com/embed/grTCDFbhKMU\" frameborder=\"0\" allowfullscreen></iframe>"
baseURL:nil];

视频已正确启动，但无法切换到横向模式。

我已经在相关的 ViewController 中写了这个:

- (void)didRotate:(NSNotification *)notification
{
    UIDeviceOrientation orientation = [[notification object] orientation];

    if (orientation == UIDeviceOrientationLandscapeLeft)
    {
        [self.newsContent setTransform:CGAffineTransformMakeRotation(M_PI / 2.0)];
    }
    else if (orientation == UIDeviceOrientationLandscapeRight)
    {
        [self.newsContent setTransform:CGAffineTransformMakeRotation(M_PI / -2.0)];
    }
    else if (orientation == UIDeviceOrientationPortraitUpsideDown)
    {
        [self.newsContent setTransform:CGAffineTransformMakeRotation(M_PI)];
    }
    else if (orientation == UIDeviceOrientationPortrait)
    {
        [self.newsContent setTransform:CGAffineTransformMakeRotation(0.0)];
    }
}

对于改变内容方向很有用，但一旦视频启动就没用了:(

有什么想法吗？

Answer 1

您应该在以下方法中返回 YES:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { 

    //All orientations are accepted except for the upsidedown orientation
    if(interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown) {
        return YES;
    } else {
        return NO;
    }
}

如果返回YES则旋转，如果返回no则不旋转。