代碼如下：
public static final String PLAYSTATE_CHANGED = "com.android.music.playstatechanged";
public static final String META_CHANGED = "com.android.music.metachanged";
public static final String QUEUE_CHANGED = "com.android.music.queuechanged";
public static final String PLAYBACK_COMPLETE = "com.android.music.playbackcomplete";
public static final String ASYNC_OPEN_COMPLETE = "com.android.music.asyncopencomplete";
public static final String SERVICECMD = "com.android.music.musicservicecommand";
public static final String CMDNAME = "command";
public static final String CMDTOGGLEPAUSE = "togglepause";
public static final String CMDSTOP = "stop";
public static final String CMDPAUSE = "pause";
public static final String CMDPREVIOUS = "previous";
public static final String CMDNEXT = "next";
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
String cmd = intent.getStringExtra("command");
if (CMDNEXT.equals(cmd) || NEXT_ACTION.equals(action)) {
next(true);
} else if (CMDPREVIOUS.equals(cmd) || PREVIOUS_ACTION.equals(action)) {
prev();
} else if (CMDTOGGLEPAUSE.equals(cmd) || TOGGLEPAUSE_ACTION.equals(action)) {
if (isPlaying()) {
pause();
} else {
play();
}
} else if (CMDPAUSE.equals(cmd) || PAUSE_ACTION.equals(action)) {
pause();
} else if (CMDSTOP.equals(cmd)) {
pause();
seek(0);
} else if (MediaAppWidgetProvider.CMDAPPWIDGETUPDATE.equals(cmd)) {
// Someone asked us to refresh a set of specific widgets, probably
// because they were just added.
int[] appWidgetIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
mAppWidgetProvider.performUpdate(MediaPlaybackService.this, appWidgetIds);
}
}
};
通過分析可以得出要暫停音樂可以有兩種方法，一種是直接發送cmd，另外一種是發送action。
如下暫停音樂播放代碼：
private void pauseMusic() {
Intent freshIntent = new Intent();
freshIntent.setAction("com.android.music.musicservicecommand.pause");
freshIntent.putExtra("command", "pause");
sendBroadcast(freshIntent);
}