我正在尝试测试通知功能。我创建了一个启用了音频播放的模拟器。我能够收到通知,但是无法听到声音。可能出了什么问题?我是否遗漏了某些设置?
NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(ns);
int icon = R.drawable.icon;
CharSequence tickerText = "Hello";
CharSequence contentTitle = "My notification"; // expanded message title
CharSequence contentText = "Hello"; // expanded message text
Intent notificationIntent = new Intent("ABC");
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
long when = System.currentTimeMillis();
Notification notification = new Notification(icon, tickerText, when);
notification.defaults |= Notification.DEFAULT_SOUND;
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(HELLO_ID, notification);
当我查看logcat时,我看到了以下的堆栈跟踪。
09-20 15:44:47.297: DEBUG/MediaPlayer(62): Couldn't open file on client side, trying server side
09-20 15:44:47.347: ERROR/MediaPlayerService(34): Couldn't open fd for content://settings/system/notification_sound
09-20 15:44:47.347: ERROR/MediaPlayer(62): Unable to to create media player
09-20 15:44:47.415: WARN/NotificationService(62): error loading sound for content://settings/system/notification_sound
09-20 15:44:47.415: WARN/NotificationService(62): java.io.IOException: setDataSource failed.: status=0x80000000
09-20 15:44:47.415: WARN/NotificationService(62): at android.media.MediaPlayer.setDataSource(Native Method)
09-20 15:44:47.415: WARN/NotificationService(62): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:714)
09-20 15:44:47.415: WARN/NotificationService(62): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:669)
09-20 15:44:47.415: WARN/NotificationService(62): at com.android.server.NotificationPlayer$CreationAndCompletionThread.run(NotificationPlayer.java:88)