我正在使用OpenYoutubeActivity.jar来播放像这样的YouTube视频
Intent videoIntent = new Intent(null, Uri.parse("ytv://NG3WygJmiVs"), this,OpenYouTubePlayerActivity.class);
startActivity(videoIntent);
OpenYouTubePlayerActivity.java就在这里
public class OpenYouTubePlayerActivity extends Activity {
public static final String SCHEME_YOUTUBE_VIDEO = "ytv";
public static final String SCHEME_YOUTUBE_PLAYLIST = "ytpl";
static final String YOUTUBE_VIDEO_INFORMATION_URL = "http://www.youtube.com/get_video_info?&video_id=";
static final String YOUTUBE_PLAYLIST_ATOM_FEED_URL = "http://gdata.youtube.com/feeds/api/playlists/";
protected ProgressBar mProgressBar;
protected TextView mProgressMessage;
protected VideoView mVideoView;
public final static String MSG_INIT = "com.keyes.video.msg.init";
protected String mMsgInit = "Initializing";
public final static String MSG_DETECT = "com.keyes.video.msg.detect";
protected String mMsgDetect = "Detecting Bandwidth";
public final static String MSG_PLAYLIST = "com.keyes.video.msg.playlist";
protected String mMsgPlaylist = "Determining Latest Video in YouTube Playlist";
public final static String MSG_TOKEN = "com.keyes.video.msg.token";
protected String mMsgToken = "Retrieving YouTube Video Token";
public final static String MSG_LO_BAND = "com.keyes.video.msg.loband";
protected String mMsgLowBand = "Buffering Low-bandwidth Video";
public final static String MSG_HI_BAND = "com.keyes.video.msg.hiband";
protected String mMsgHiBand = "Buffering High-bandwidth Video";
public final static String MSG_ERROR_TITLE = "com.keyes.video.msg.error.title";
protected String mMsgErrorTitle = "Communications Error";
public final static String MSG_ERROR_MSG = "com.keyes.video.msg.error.msg";
protected String mMsgError = "An error occurred during the retrieval of the video. This could be due to network issues or YouTube protocols. Please try again later.";
/** Background task on which all of the interaction with YouTube is done */
protected QueryYouTubeTask mQueryYouTubeTask;
protected String mVideoId = null;
@Override
protected void onCreate(Bundle pSavedInstanceState) {
super.onCreate(pSavedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
// create the layout of the view
setupView();
// determine the messages to be displayed as the view loads the video
extractMessages();
// set the flag to keep the screen ON so that the video can play without the screen being turned off
getWindow().setFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON, android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
mProgressBar.bringToFront();
mProgressBar.setVisibility(View.VISIBLE);
mProgressMessage.setText(mMsgInit);
// extract the playlist or video id from the intent that started this video
Uri lVideoIdUri = this.getIntent().getData();
if(lVideoIdUri == null){
Log.i(this.getClass().getSimpleName(), "No video ID was specified in the intent. Closing video activity.");
finish();
}
String lVideoSchemeStr = lVideoIdUri.getScheme();
String lVideoIdStr = lVideoIdUri.getEncodedSchemeSpecificPart();
if(lVideoIdStr == null){
Log.i(this.getClass().getSimpleName(), "No video ID was specified in the intent. Closing video activity.");
finish();
}
if(lVideoIdStr.startsWith("//")){
if(lVideoIdStr.length() > 2){
lVideoIdStr = lVideoIdStr.substring(2);
} else {
Log.i(this.getClass().getSimpleName(), "No video ID was specified in the intent. Closing video activity.");
finish();
}
}
///////////////////
// extract either a video id or a playlist id, depending on the uri scheme
YouTubeId lYouTubeId = null;
if(lVideoSchemeStr != null && lVideoSchemeStr.equalsIgnoreCase(SCHEME_YOUTUBE_PLAYLIST)){
lYouTubeId = new PlaylistId(lVideoIdStr);
}
else if(lVideoSchemeStr != null && lVideoSchemeStr.equalsIgnoreCase(SCHEME_YOUTUBE_VIDEO)){
lYouTubeId = new VideoId(lVideoIdStr);
}
if(lYouTubeId == null){
Log.i(this.getClass().getSimpleName(), "Unable to extract video ID from the intent. Closing video activity.");
finish();
}
mQueryYouTubeTask = (QueryYouTubeTask) new QueryYouTubeTask().execute(lYouTubeId);
}
/**
* Determine the messages to display during video load and initialization.
*/
private void extractMessages() {
Intent lInvokingIntent = getIntent();
String lMsgInit = lInvokingIntent.getStringExtra(MSG_INIT);
if(lMsgInit != null){
mMsgInit = lMsgInit;
}
String lMsgDetect = lInvokingIntent.getStringExtra(MSG_DETECT);
if(lMsgDetect != null){
mMsgDetect = lMsgDetect;
}
String lMsgPlaylist = lInvokingIntent.getStringExtra(MSG_PLAYLIST);
if(lMsgPlaylist != null){
mMsgPlaylist = lMsgPlaylist;
}
String lMsgToken = lInvokingIntent.getStringExtra(MSG_TOKEN);
if(lMsgToken != null){
mMsgToken = lMsgToken;
}
String lMsgLoBand = lInvokingIntent.getStringExtra(MSG_LO_BAND);
if(lMsgLoBand != null){
mMsgLowBand = lMsgLoBand;
}
String lMsgHiBand = lInvokingIntent.getStringExtra(MSG_HI_BAND);
if(lMsgHiBand != null){
mMsgHiBand = lMsgHiBand;
}
String lMsgErrTitle = lInvokingIntent.getStringExtra(MSG_ERROR_TITLE);
if(lMsgErrTitle != null){
mMsgErrorTitle = lMsgErrTitle;
}
String lMsgErrMsg = lInvokingIntent.getStringExtra(MSG_ERROR_MSG);
if(lMsgErrMsg != null){
mMsgError = lMsgErrMsg;
}
}
/**
* Create the view in which the video will be rendered.
*/
private void setupView() {
LinearLayout lLinLayout = new LinearLayout(this);
lLinLayout.setId(1);
lLinLayout.setOrientation(LinearLayout.VERTICAL);
lLinLayout.setGravity(Gravity.CENTER);
lLinLayout.setBackgroundColor(Color.BLACK);
LayoutParams lLinLayoutParms = new LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
lLinLayout.setLayoutParams(lLinLayoutParms);
this.setContentView(lLinLayout);
RelativeLayout lRelLayout = new RelativeLayout(this);
lRelLayout.setId(2);
lRelLayout.setGravity(Gravity.CENTER);
lRelLayout.setBackgroundColor(Color.BLACK);
android.widget.RelativeLayout.LayoutParams lRelLayoutParms = new android.widget.RelativeLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
lRelLayout.setLayoutParams(lRelLayoutParms);
lLinLayout.addView(lRelLayout);
mVideoView = new VideoView(this);
mVideoView.setId(3);
android.widget.RelativeLayout.LayoutParams lVidViewLayoutParams = new android.widget.RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lVidViewLayoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);
mVideoView.setLayoutParams(lVidViewLayoutParams);
lRelLayout.addView(mVideoView);
mProgressBar = new ProgressBar(this);
mProgressBar.setIndeterminate(true);
mProgressBar.setVisibility(View.VISIBLE);
mProgressBar.setEnabled(true);
mProgressBar.setId(4);
android.widget.RelativeLayout.LayoutParams lProgressBarLayoutParms = new android.widget.RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lProgressBarLayoutParms.addRule(RelativeLayout.CENTER_IN_PARENT);
mProgressBar.setLayoutParams(lProgressBarLayoutParms);
lRelLayout.addView(mProgressBar);
mProgressMessage = new TextView(this);
mProgressMessage.setId(5);
android.widget.RelativeLayout.LayoutParams lProgressMsgLayoutParms = new android.widget.RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lProgressMsgLayoutParms.addRule(RelativeLayout.CENTER_HORIZONTAL);
lProgressMsgLayoutParms.addRule(RelativeLayout.BELOW, 4);
mProgressMessage.setLayoutParams(lProgressMsgLayoutParms);
mProgressMessage.setTextColor(Color.LTGRAY);
mProgressMessage.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12);
mProgressMessage.setText("...");
lRelLayout.addView(mProgressMessage);
}
@Override
protected void onDestroy() {
super.onDestroy();
YouTubeUtility.markVideoAsViewed(this, mVideoId);
if(mQueryYouTubeTask != null){
mQueryYouTubeTask.cancel(true);
}
if(mVideoView != null){
mVideoView.stopPlayback();
}
// clear the flag that keeps the screen ON
getWindow().clearFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
this.mQueryYouTubeTask = null;
this.mVideoView = null;
}
public void updateProgress(String pProgressMsg){
try {
mProgressMessage.setText(pProgressMsg);
} catch(Exception e) {
Log.e(this.getClass().getSimpleName(), "Error updating video status!", e);
}
}
private class ProgressUpdateInfo {
public String mMsg;
public ProgressUpdateInfo(String pMsg){
mMsg = pMsg;
}
}
/**
* Task to figure out details by calling out to YouTube GData API. We only use public methods that
* don't require authentication.
*
*/
private class QueryYouTubeTask extends AsyncTask<YouTubeId, ProgressUpdateInfo, Uri> {
private boolean mShowedError = false;
@Override
protected Uri doInBackground(YouTubeId... pParams) {
String lUriStr = null;
// modified by Naushad Kasu - changed to 18 instead of 17
String lYouTubeFmtQuality = "18"; // 3gpp medium quality, which should be fast enough to view over EDGE connection
String lYouTubeVideoId = null;
if(isCancelled())
return null;
try {
// if the intent is to show a playlist, get the latest video id from the playlist, otherwise the video
// id was explicitly declared.
if(pParams[0] instanceof PlaylistId){
publishProgress(new ProgressUpdateInfo(mMsgPlaylist));
lYouTubeVideoId = YouTubeUtility.queryLatestPlaylistVideo((PlaylistId) pParams[0]);
}
else if(pParams[0] instanceof VideoId){
lYouTubeVideoId = pParams[0].getId();
}
mVideoId = lYouTubeVideoId;
publishProgress(new ProgressUpdateInfo(mMsgToken));
if(isCancelled())
return null;
////////////////////////////////////
// calculate the actual URL of the video, encoded with proper YouTube token
lUriStr = YouTubeUtility.calculateYouTubeUrl(lYouTubeFmtQuality, true, lYouTubeVideoId);
if(isCancelled())
return null;
if(lYouTubeFmtQuality.equals("17")){
publishProgress(new ProgressUpdateInfo(mMsgLowBand));
} else {
publishProgress(new ProgressUpdateInfo(mMsgHiBand));
}
} catch(Exception e) {
Log.e(this.getClass().getSimpleName(), "Error occurred while retrieving information from YouTube.", e);
}
if(lUriStr != null){
return Uri.parse(lUriStr);
} else {
return null;
}
}
@Override
protected void onPostExecute(Uri pResult) {
super.onPostExecute(pResult);
try {
if(isCancelled())
return;
if(pResult == null){
throw new RuntimeException("Invalid NULL Url.");
}
mVideoView.setVideoURI(pResult);
if(isCancelled())
return;
// TODO: add listeners for finish of video
mVideoView.setOnCompletionListener(new OnCompletionListener(){
@Override
public void onCompletion(MediaPlayer pMp) {
if(isCancelled())
return;
OpenYouTubePlayerActivity.this.finish();
}
});
if(isCancelled())
return;
final MediaController lMediaController = new MediaController(OpenYouTubePlayerActivity.this);
mVideoView.setMediaController(lMediaController);
lMediaController.show(0);
//mVideoView.setKeepScreenOn(true);
mVideoView.setOnPreparedListener( new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer pMp) {
if(isCancelled())
return;
OpenYouTubePlayerActivity.this.mProgressBar.setVisibility(View.GONE);
OpenYouTubePlayerActivity.this.mProgressMessage.setVisibility(View.GONE);
}
});
if(isCancelled())
return;
mVideoView.requestFocus();
mVideoView.start();
} catch(Exception e){
Log.e(this.getClass().getSimpleName(), "Error playing video!", e);
if(!mShowedError){
showErrorAlert();
}
}
}
private void showErrorAlert() {
try {
Builder lBuilder = new AlertDialog.Builder(OpenYouTubePlayerActivity.this);
lBuilder.setTitle(mMsgErrorTitle);
lBuilder.setCancelable(false);
lBuilder.setMessage(mMsgError);
lBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface pDialog, int pWhich) {
OpenYouTubePlayerActivity.this.finish();
}
});
AlertDialog lDialog = lBuilder.create();
lDialog.show();
} catch(Exception e){
Log.e(this.getClass().getSimpleName(), "Problem showing error dialog.", e);
}
}
@Override
protected void onProgressUpdate(ProgressUpdateInfo... pValues) {
super.onProgressUpdate(pValues);
OpenYouTubePlayerActivity.this.updateProgress(pValues[0].mMsg);
}
}
@Override
protected void onStart() {
super.onStart();
}
@Override
protected void onStop() {
super.onStop();
}
}
使用相同的代码播放某些视频而某些视频正在播放。 它给出了像这样的错误
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): Error occurred while retrieving information from YouTube.
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): java.lang.NullPointerException
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.net.URLDecoder.decode(URLDecoder.java:130)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.net.URLDecoder.decode(URLDecoder.java:68)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at com.controlledsenility.android.youtube.YouTubeUtility.calculateYouTubeUrl(YouTubeUtility.java:152)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at com.ydemo.OpenYouTubePlayerActivity$QueryYouTubeTask.doInBackground(OpenYouTubePlayerActivity.java:392)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at com.ydemo.OpenYouTubePlayerActivity$QueryYouTubeTask.doInBackground(OpenYouTubePlayerActivity.java:1)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at android.os.AsyncTask$2.call(AsyncTask.java:185)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
05-29 18:16:42.429: ERROR/QueryYouTubeTask(287): at java.lang.Thread.run(Thread.java:1096)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): Error playing video!
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): java.lang.RuntimeException: Invalid NULL Url.
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at com.ydemo.OpenYouTubePlayerActivity$QueryYouTubeTask.onPostExecute(OpenYouTubePlayerActivity.java:425)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at com.ydemo.OpenYouTubePlayerActivity$QueryYouTubeTask.onPostExecute(OpenYouTubePlayerActivity.java:1)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at android.os.AsyncTask.finish(AsyncTask.java:417)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at android.os.AsyncTask.access$300(AsyncTask.java:127)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at android.os.Handler.dispatchMessage(Handler.java:99)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at android.os.Looper.loop(Looper.java:123)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at android.app.ActivityThread.main(ActivityThread.java:4627)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at java.lang.reflect.Method.invokeNative(Native Method)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at java.lang.reflect.Method.invoke(Method.java:521)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-29 18:16:42.449: ERROR/QueryYouTubeTask(287): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：3)
使用此
Intent videoIntent = new Intent(null, Uri.parse("ytv:NG3WygJmiVs"), this,OpenYouTubePlayerActivity.class);
startActivity(videoIntent);
答案 1 :(得分：0)
使用此代码
startActivity(newIntent(Intent.ACTION_VIEW, Uri.parse("ytv://NG3WygJmiVs")));