YouTube 视频在 iOS6 上播放中断(在 iOS5 上工作正常) [英] YouTube video playback broken on iOS6 (works fine on iOS5)
问题描述
在我的应用中，我有一个按钮，按下该按钮后，您可以观看 YouTube 视频(电影预告片).在应用程序内，无需启动 safari.您可以在下面看到一个代码片段.这段代码在 iOS5 下工作得很好.但是，在 iOS 6 中， findButtonInView 中的 UIButton 始终为零.任何想法可能是什么原因?
In my app, I have a button which, when pressed, lets you watch a youtube video (a movie trailer). Within the app, without launching safari. Below you can see a code snippet. This code works pefrectly fine under iOS5. However, in iOS 6, the UIButton in findButtonInView is always nil. Any ideas what might be the reason?
youtubeWebView.delegate = self;
youtubeWebView.backgroundColor = [UIColor clearColor];
NSString* embedHTML = @" <html><head> <style type="text/css"> body {background-color: transparent; color: white; }</style></head><body style="margin:0"><embed id="yt" src="%@?version=3&app=youtube_gdata" type="application/x-shockwave-flash"width="%0.0f" height="%0.0f"></embed></body></html>";
NSURL *movieTrailer;
if(tmdbMovie) movieTrailer = tmdbMovie.trailer;
else movieTrailer = [NSURL URLWithString:movie.trailerURLString];
NSString *html = [NSString stringWithFormat:embedHTML,
movieTrailer,
youtubeWebView.frame.size.width,
youtubeWebView.frame.size.height];
[youtubeWebView loadHTMLString:html baseURL:nil];
[self addSubview:youtubeWebView];
- (void)webViewDidFinishLoad:(UIWebView *)_webView {
isWatchTrailerBusy = NO;
[manager displayNetworkActivityIndicator:NO];
//stop the activity indicator and enable the button
UIButton *b = [self findButtonInView:_webView];
//TODO this returns null in case of iOS 6, redirect to the youtube app
if(b == nil) {
NSURL *movieTrailer;
if(tmdbMovie) {
movieTrailer = tmdbMovie.trailer;
} else {
movieTrailer = [NSURL URLWithString:movie.trailerURLString];
}
[[UIApplication sharedApplication] openURL:movieTrailer];
} else {
[b sendActionsForControlEvents:UIControlEventTouchUpInside];
}
}
- (UIButton *)findButtonInView:(UIView *)view {
UIButton *button = nil;
if ([view isMemberOfClass:[UIButton class]]) {
return (UIButton *)view;
}
if (view.subviews && [view.subviews count] > 0) {
for (UIView *subview in view.subviews) {
button = [self findButtonInView:subview];
if (button) return button;
}
}
return button;
}
推荐答案
Apple 更改了 iOS6 中处理 YouTube 视频的方式.我还使用了 findButtonInView 方法，但它不再有效.
Apple changed how YouTube videos are handled in iOS6. I also was using the findButtonInView method but that no longer works.
我发现以下似乎有效(在 iOS < 6 中未经测试):
I've discovered the following seems to work (untested in iOS < 6):
- (void)viewDidLoad
{
[super viewDidLoad];
self.webView.mediaPlaybackRequiresUserAction = NO;
}
- (void)playVideo
{
self.autoPlay = YES;
// Replace @"y8Kyi0WNg40" with your YouTube video id
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@", @"http://www.youtube.com/embed/", @"y8Kyi0WNg40"]]]];
}
// UIWebView delegate
- (void)webViewDidFinishLoad:(UIWebView *)webView {
if (self.autoPlay) {
self.autoPlay = NO;
[self clickVideo];
}
}
- (void)clickVideo {
[self.webView stringByEvaluatingJavaScriptFromString:@"
function pollToPlay() {
var vph5 = document.getElementById("video-player");
if (vph5) {
vph5.playVideo();
} else {
setTimeout(pollToPlay, 100);
}
}
pollToPlay();
"];
}
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