blocks|key|1406516|text|Youtube+(和市场应用程序)只能与谷歌为G1和G2发布的特殊ROM一起使用。因此，不幸的是，您不能在OpenSource-ROM中运行它们，就像在Emulator中使用的那样。好吧，也许你可以，但不是以官方支持的方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406517|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The Youtube (and Market application) are only supposed to be used with special ROMs, which Google released for the G1 and the G2. So you can't run them in an OpenSource-ROM, like the one used in the Emulator, unfortunately. Well, maybe you can, but not in an officially supported way.

blocks|key|1621309|text|找到了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1621310|03-18+12:40:02.842:+INFO/ActivityManager(68):+Starting+activity:+Intent+{+action=android.intent.action.VIEW+data=(URL+TO+A+FLV+FILE+OF+THE+VIDEO)+type=video/*+comp={com.google.android.youtube/com.google.android.youtube.YouTubePlayer}+(has+extras)+}|code-block|syntax|javascript|1621311|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Found it: 

<pre><code>03-18 12:40:02.842: INFO/ActivityManager(68): Starting activity: Intent { action=android.intent.action.VIEW data=(URL TO A FLV FILE OF THE VIDEO) type=video/* comp={com.google.android.youtube/com.google.android.youtube.YouTubePlayer} (has extras) }
</code></pre>

blocks|key|1406570|text|您也可以直接获取WebViewClient|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1406571|wvClient+=+new+WebViewClient()+{
@Override
public+boolean+shouldOverrideUrlLoading(WebView+view,+String+url)+{
++if+(url.startsWith("youtube:"))+{
++++String+youtubeUrl+=+"http://www.youtube.com/watch?v="
++++%2B+url.Replace("youtube:",+"");
++startActivity(new+Intent(Intent.ACTION_VIEW,+Uri.parse(youtubeUrl)));
}
return+false;
}|code-block|syntax|javascript|1406572|在我的应用中运行得很好。|1406573|entityMap^0|8|D|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

You can also just grab the <code>WebViewClient</code> 

<pre><code>wvClient = new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
 if (url.startsWith("youtube:")) {
 String youtubeUrl = "http://www.youtube.com/watch?v="
 + url.Replace("youtube:", "");
 startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(youtubeUrl)));
}
return false;
}
</code></pre>

Worked fine in my app.

blocks|key|1406613|text|尝尝这个,|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406614|WebView+webview+=+new+WebView(this);+

String+htmlString+=+
++++"<html>+<body>+<embed+src=\"youtube+link\";+type=application/x-shockwave-flash+width="%2BwidthOfDevice%2B"+height="%2BheightOfDevice%2B">+</embed>+</body>+</html>";

webview.loadData(htmlString+,"text/html",+"UTF-8");|code-block|syntax|javascript|1406615|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this,

<pre><code>WebView webview = new WebView(this); 

String htmlString = 
 "&lt;html&gt; &lt;body&gt; &lt;embed src=\"youtube link\"; type=application/x-shockwave-flash width="+widthOfDevice+" height="+heightOfDevice+"&gt; &lt;/embed&gt; &lt;/body&gt; &lt;/html&gt;";

webview.loadData(htmlString ,"text/html", "UTF-8");
</code></pre>

blocks|key|1406632|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406633|public+class+abc+extends+Activity+implements+OnPreparedListener{

++/**+Called+when+the+activity+is+first+created.+*/

++@Override
++++public+void+onCreate(Bundle+savedInstanceState)
++{
++++super.onCreate(savedInstanceState);
++++setContentView(R.layout.main);
++++startActivity(new+Intent(Intent.ACTION_VIEW,+Uri.parse("http://www.youtube.com/watch?v=cxLG2wtE7TM")));++++++++++


++++@Override
++++++public+void+onPrepared(MediaPlayer+mp)+{
++++++++//+TODO+Auto-generated+method+stub

++++}
++}
}|code-block|syntax|javascript|1406634|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this:

<pre><code>public class abc extends Activity implements OnPreparedListener{

 /** Called when the activity is first created. */

 @Override
 public void onCreate(Bundle savedInstanceState)
 {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.youtube.com/watch?v=cxLG2wtE7TM"))); 


 @Override
 public void onPrepared(MediaPlayer mp) {
 // TODO Auto-generated method stub

 }
 }
}
</code></pre>

blocks|key|1406675|text|回答以前的问题，只是为了通知你们包已经改变了，这是更新|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406676|Intent+videoClient+=+new+Intent(Intent.ACTION_VIEW);
videoClient.setData("VALID+YOUTUBE+LINK+WITH+HTTP");
videoClient.setClassName("com.google.android.youtube",+"com.google.android.youtube.WatchActivity");
startActivity(videoClient);|code-block|syntax|javascript|1406677|这非常有效，但当您使用有效的youtube+URL调用ACTION_VIEW的正常意图时，用户无论如何都会获得活动选择器。|1406678|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Replying to old question, just to inform you guys that package have changed, heres the update

<pre><code>Intent videoClient = new Intent(Intent.ACTION_VIEW);
videoClient.setData("VALID YOUTUBE LINK WITH HTTP");
videoClient.setClassName("com.google.android.youtube", "com.google.android.youtube.WatchActivity");
startActivity(videoClient);
</code></pre>

This works very well, but when you call normal Intent with ACTION_VIEW with valid youtube URL user gets the Activity selector anyways.

blocks|key|1406741|text|下面是我是如何解决这个问题的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406742|Intent+intent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse("vnd.youtube://"+%2B+video_id));
startActivity(intent);|code-block|syntax|javascript|1406743|现在我已经做了更多的研究，看起来我只需要'vnd.youtube:VIDEO_ID‘而不是冒号后面的两个斜杠(':’vs.+'://')：|1406744|http://it-ride.blogspot.com/2010/04/android-youtube-intent.html|offset|length|1406745|我尝试了这里的大多数建议，但它们对于所有引发异常的所谓“直接”方法都不是很有效。我假设，使用我的方法，如果没有安装YouTube应用程序，操作系统会有一个默认的备用位置，而不是应用程序崩溃。理论上，这款应用程序只能在装有YouTube应用程序的设备上运行，所以这应该不是问题。|1406746|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|1R|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|W|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|X|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Y|8|@]|9|@$K|Z|L|10|1|11]]|A|$]]|$1|M|3|N|5|6|7|12|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|J]]]]

Here's how I solved this issue:

<pre><code>Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube://" + video_id));
startActivity(intent);
</code></pre>

Now that I've done some more research, it looks like I only needed 'vnd.youtube:VIDEO_ID' instead of two slashes after the colon (':' vs. '://'):

<a href="http://it-ride.blogspot.com/2010/04/android-youtube-intent.html" rel="noreferrer">http://it-ride.blogspot.com/2010/04/android-youtube-intent.html</a>

I tried most of the suggestions here and they didn't really work very well with all of the supposed "direct" methods raising exceptions. I would assume that, with my method, if the YouTube app is NOT installed, the OS has a default fallback position of something other than crashing the app. The app is theoretically only going on devices with the YouTube app on them anyway, so this should be a non-issue.

blocks|key|1406804|text|使用我的代码..我可以使用这个代码来播放youtube视频...你只需要在"videoId“变量中提供youtube+video+id+...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406805|String+videoId+=+"Fee5vbFLYM4";
Intent+intent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse("vnd.youtube:"%2BvideoId));+
intent.putExtra("VIDEO_ID",+videoId);+
startActivity(intent);+|code-block|syntax|javascript|1406806|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Use my code .. I am able to play youtube video using this code ... you just need to provide youtube video id in the "videoId" variable ....

<pre><code>String videoId = "Fee5vbFLYM4";
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube:"+videoId)); 
intent.putExtra("VIDEO_ID", videoId); 
startActivity(intent); 
</code></pre>

blocks|key|1621636|text|这个怎么样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1621637|public+static+void+watchYoutubeVideo(Context+context,+String+id){
++++Intent+appIntent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse("vnd.youtube:"+%2B+id));
++++Intent+webIntent+=+new+Intent(Intent.ACTION_VIEW,
++++++++++++++++Uri.parse("http://www.youtube.com/watch?v="+%2B+id));
++++try+{
++++++++context.startActivity(appIntent);
++++}+catch+(ActivityNotFoundException+ex)+{
++++++++context.startActivity(webIntent);
++++}
}++|code-block|syntax|javascript|1621638|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

And how about this:
<pre><code>public static void watchYoutubeVideo(Context context, String id){
 Intent appIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(&quot;vnd.youtube:&quot; + id));
 Intent webIntent = new Intent(Intent.ACTION_VIEW,
 Uri.parse(&quot;http://www.youtube.com/watch?v=&quot; + id));
 try {
 context.startActivity(appIntent);
 } catch (ActivityNotFoundException ex) {
 context.startActivity(webIntent);
 }
} 
</code></pre>

blocks|key|1406908|text|Youtube现在有一个播放器api，你可以试试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406909|https://developers.google.com/youtube/android/player/|offset|length|1406910|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1H|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Youtube now has a player api, You should try that.

<a href="https://developers.google.com/youtube/android/player/" rel="nofollow">https://developers.google.com/youtube/android/player/</a>

blocks|key|1621697|text|/**
+*+Intent+to+open+a+YouTube+Video
+*+
+*+@param+pm
+*++++++++++++The+{@link+PackageManager}.
+*+@param+url
+*++++++++++++The+URL+or+YouTube+video+ID.
+*+@return+the+intent+to+open+the+YouTube+app+or+Web+Browser+to+play+the+video
+*/
public+static+Intent+newYouTubeIntent(PackageManager+pm,+String+url)+{
++++Intent+intent;
++++if+(url.length()+==+11)+{
++++++++//+youtube+video+id
++++++++intent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse("vnd.youtube://"+%2B+url));
++++}+else+{
++++++++//+url+to+video
++++++++intent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse(url));
++++}
++++try+{
++++++++if+(pm.getPackageInfo("com.google.android.youtube",+0)+!=+null)+{
++++++++++++intent.setPackage("com.google.android.youtube");
++++++++}
++++}+catch+(NameNotFoundException+e)+{
++++}
++++return+intent;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1621698|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>/**
 * Intent to open a YouTube Video
 * 
 * @param pm
 * The {@link PackageManager}.
 * @param url
 * The URL or YouTube video ID.
 * @return the intent to open the YouTube app or Web Browser to play the video
 */
public static Intent newYouTubeIntent(PackageManager pm, String url) {
 Intent intent;
 if (url.length() == 11) {
 // youtube video id
 intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube://" + url));
 } else {
 // url to video
 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
 }
 try {
 if (pm.getPackageInfo("com.google.android.youtube", 0) != null) {
 intent.setPackage("com.google.android.youtube");
 }
 } catch (NameNotFoundException e) {
 }
 return intent;
}
</code></pre>

blocks|key|1406967|text|在不同的应用程序上运行视频最安全的方法是首先尝试解析包，换句话说，检查应用程序是否安装在设备上。因此，如果你想在youtube上运行一个视频，你可以这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1406968|public+void+playVideo(String+key){

++++Intent+intent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse("vnd.youtube:"+%2B+key));

++++//+Check+if+the+youtube+app+exists+on+the+device
++++if+(intent.resolveActivity(getPackageManager())+==+null)+{
++++++++//+If+the+youtube+app+doesn't+exist,+then+use+the+browser
++++++++intent+=+new+Intent(Intent.ACTION_VIEW,
++++++++++++++++Uri.parse("http://www.youtube.com/watch?v="+%2B+key));
++++}

++++startActivity(intent);
}|code-block|syntax|javascript|1406969|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The safest way to run videos on a different app is by first trying to resolve the package, in other words, check that the app is installed on the device. So if you want to run a video on youtube you'd do something like this: 

<pre><code>public void playVideo(String key){

 Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube:" + key));

 // Check if the youtube app exists on the device
 if (intent.resolveActivity(getPackageManager()) == null) {
 // If the youtube app doesn't exist, then use the browser
 intent = new Intent(Intent.ACTION_VIEW,
 Uri.parse("http://www.youtube.com/watch?v=" + key));
 }

 startActivity(intent);
}
</code></pre>

blocks|key|1407039|text|这将工作，如果youtube应用程序安装。如果没有，则会出现一个选择器来选择其他应用程序：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1407040|Uri+uri+=+Uri.parse(+"https://www.youtube.com/watch?v=bESGLojNYSo"+);
uri+=+Uri.parse(+"vnd.youtube:"+%2B+uri.getQueryParameter(+"v"+)+);
startActivity(+new+Intent(+Intent.ACTION_VIEW,+uri+)+);|code-block|syntax|javascript|1407041|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This will work if youtube app installed. If not, a chooser will show up to select other application:

<pre><code>Uri uri = Uri.parse( "https://www.youtube.com/watch?v=bESGLojNYSo" );
uri = Uri.parse( "vnd.youtube:" + uri.getQueryParameter( "v" ) );
startActivity( new Intent( Intent.ACTION_VIEW, uri ) );
</code></pre>

blocks|key|1407107|text|此函数适用于函数中的me...just传递url字符串：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1407108|void+watch_video(String+url)
{
++++Intent+yt_play+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse(url))
++++Intent+chooser+=+Intent.createChooser(yt_play+,+"Open+With");
++++++++++++++++
++++if+(yt_play.resolveActivity(getPackageManager())+!=+null)+{
++++++++++++++++++++startActivity(chooser);
++++++++++++++++}
}|code-block|syntax|javascript|1407109|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This function work fine for me...just pass url string in function:
<pre><code>void watch_video(String url)
{
 Intent yt_play = new Intent(Intent.ACTION_VIEW, Uri.parse(url))
 Intent chooser = Intent.createChooser(yt_play , &quot;Open With&quot;);
 
 if (yt_play.resolveActivity(getPackageManager()) != null) {
 startActivity(chooser);
 }
}
</code></pre>

blocks|key|1407169|text|如果安装了Youtube应用程序，您可以使用Youtube+Android播放器API播放视频，否则只需提示用户从可用的web浏览器中进行选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1407170|if(YouTubeIntents.canResolvePlayVideoIntent(mContext)){
++++++++++++++++++++mContext.startActivity(YouTubeIntents.createPlayVideoIntent(mContext,+mVideoId));
}else+{
++++Intent+webIntent+=+new+Intent(Intent.ACTION_VIEW,+
+++++++++++Uri.parse("http://www.youtube.com/watch?v="+%2B+mVideoId));

++++mContext.startActivity(webIntent);
}|code-block|syntax|javascript|1407171|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use the Youtube Android player API to play the video if Youtube app is installed, otherwise just prompt the user to choose from the available web browsers.

<pre><code>if(YouTubeIntents.canResolvePlayVideoIntent(mContext)){
 mContext.startActivity(YouTubeIntents.createPlayVideoIntent(mContext, mVideoId));
}else {
 Intent webIntent = new Intent(Intent.ACTION_VIEW, 
 Uri.parse("http://www.youtube.com/watch?v=" + mVideoId));

 mContext.startActivity(webIntent);
}
</code></pre>

I have created a app where you can download YouTube videos for android. Now, I want it so that if you play a video in the YouTube native app you can download it too. To do this, I need to know the Intent that the YouTube native app puts out in order to play the YouTube app. 
I could do this easially if I had the YouTube program on my emulator, so my 1st question is: 
1. Can I download the YouTube app for my emulator, or... 
2. What is the intent used when the user selects a video for playback.

Android YouTube app Play Video Intent

我已经创建了一个应用程序，你可以下载安卓系统的YouTube视频。现在，我想要它，这样如果你在YouTube原生应用程序中播放视频，你也可以下载它。要做到这一点，我需要知道为了播放YouTube应用程序，YouTube原生应用程序发出的意图。如果我的模拟器上有YouTube程序，我可以很容易地做到这一点，所以我的第一个...

问安卓YouTube应用播放视频意图
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