Android Notification Builder:如何设置声音以便声音在looper中播放

Question

我正在实施以下通知.默认警报声音正常,但只有一次.我只想重复播放,直到水龙头注册.

 NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle("I Am Fine")
                    .setStyle(new NotificationCompat.BigTextStyle()
                    .bigText(NOTIFICATION_MESSAGE))     
                    .setContentText(NOTIFICATION_MESSAGE)
                    .setAutoCancel(true)
                    .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE);

            Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
            mBuilder.setSound(alarmSound,AudioManager.STREAM_MUSIC);

setSound的第二个参数没有显示任何效果.请帮忙 !

Answer 1

您必须使用FLAG_INSISTENT进行通知.从文件: -

public static final int FLAG_INSISTENT

将位按位进入标志字段,如果设置,将重复音频,直到取消通知或打开通知窗口.

常数值:4(0x00000004)

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    Uri soundUri = RingtoneManager
            .getDefaultUri(RingtoneManager.TYPE_RINGTONE);
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            getApplicationContext()).setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("title").setContentText("message")
            .setSound(soundUri); // This sets the sound to play

    Notification mNotification = mBuilder.build();

    mNotification.flags |= Notification.FLAG_INSISTENT;

    // Display notification
    notificationManager.notify(1, mNotification);

Answer 2

您应该将通知声音静音，然后使用媒体播放器从应用程序播放声音文件。并将媒体播放器的实例设置为循环播放。

此后，您应该在通知中添加一个挂起的意图变量，一旦用户点击通知，就会触发关联的事件，您可以从这里停止媒体播放器实例。