Android - 仅收到通知声音，没有实际的文本通知

Question

这是我正在使用的代码。我可以听到通知有效，但没有文字。

@Override
public void onReceive(Context context, Intent arg1) {
    showNotification(context);
}

private void showNotification(Context context) {
    PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
            new Intent(context, MyActivity.class), 0);

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(context)
            .setContentTitle("My notification")
            .setContentText("Hello World!");
    mBuilder.setContentIntent(contentIntent);
    mBuilder.setDefaults(Notification.DEFAULT_SOUND);
    mBuilder.setAutoCancel(true);
    NotificationManager mNotificationManager =
        (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    mNotificationManager.notify(1, mBuilder.build());

}  

Answer 1

如果您使用的是support-v4库，请使用此代码

private void showNotification(Context context) {
    PendingIntent pIntent = PendingIntent.getActivity(context, 0,
            new Intent(context, DashBoard.class), 0);

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("My notification")
            .setContentText("Hello World!");
    mBuilder.setContentIntent(pIntent);
    NotificationManager mNotificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    // mId allows you to update the notification later on.
    mNotificationManager.notify(0, mBuilder.getNotification());
}  

Answer 2

您需要添加图标 new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.ic_launcher);

Answer 3

builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));