objective-c – 检测UIWebView完成在iPad上播放YouTube视频
我正在使用UIWebView在iPad上播放YouTube视频.
YouTube视频播放完毕后如何检测? 任何想法如何检测这个事件?再次我在说iPad不是iPhone. 提前致谢. 更新:如果您使用零解决方案来检测播放的结束,并且还希望YouTube开始自动将UIWebView设置为: self.webView.mediaPlaybackRequiresUserAction = NO; 只是想澄清一下YouTube框架api:“重要提示:这是一个实验功能,这意味着它可能会意外地改变”(08/05/2012) 解决方法
不,没有办法直接从UIWebView获取网页事件.但是我们可以通过使用
Javascript来实现这一点.
>首先,在自定义HTML中使用嵌入JavaScript,以检测视频结束播放事件. 这些链接可能有助于: > Calling Objective-C from JavaScript in an iPhone UIWebView 以示例更新: 在UIWebView的代表中,我把: #pragma - mark WebView Delegate - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { if ( [[[request URL] scheme] isEqualToString:@"callback"] ) { NSLog(@"get callback"); return NO; } return YES; } 当viewDidLoad时,网页加载: [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"youtube" ofType:@"html" ]]]]; 在youtube.html我放: <html> <body> <!-- 1. The <iframe> (and video player) will replace this <div> tag. --> <div id="player"></div> <script> // 2. This code loads the IFrame Player API code asynchronously. var tag = document.createElement('script'); tag.src = "http://www.youtube.com/player_api"; var firstScriptTag = document.getElementsByTagName('script')[0]; firstScriptTag.parentNode.insertBefore(tag,firstScriptTag); // 3. This function creates an <iframe> (and YouTube player) // after the API code downloads. var player; function onYouTubePlayerAPIReady() { player = new YT.Player('player',{ height: '390',width: '640',videoId: 'u1zgFlCw8Aw',events: { 'onReady': onPlayerReady,'onStateChange': onPlayerStateChange } }); } // 4. The API will call this function when the video player is ready. function onPlayerReady(event) { event.target.playVideo(); } // 5. The API calls this function when the player's state changes. // The function indicates that when playing a video (state=1),// the player should play for six seconds and then stop. var done = false; function onPlayerStateChange(event) { if (event.data == YT.PlayerState.PLAYING && !done) { setTimeout(stopVideo,6000); done = true; } if (event.data == YT.PlayerState.ENDED) { window.location = "callback:anything"; //here's the key }; } function stopVideo() { player.stopVideo(); } </script> </body> </html> 你可以看到我添加 if (event.data == YT.PlayerState.ENDED) { window.location = "callback:anything"; }; 到YouTube的iFrame API演示,它捕获播放器结束播放事件,并尝试使用方案“回调”加载请求,然后UIWebView Delegate可以捕获它. 您可以使用此方法来触发任何使用JavaScript的事件; (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |