相关疑难解决方法(0)

我想在Android Wear上实现堆叠通知为此,我为每个"项目"创建了1个摘要通知和N个单独通知.我只想在手机上显示摘要.这是我的代码:

private void showNotifications() {
    NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
    showNotification1(notificationManager);
    showNotification2(notificationManager);
    showGroupSummaryNotification(notificationManager);
}

private void showNotification1(NotificationManager notificationManager) {
    showSingleNotification(notificationManager, "title 1", "message 1", 1);
}

private void showNotification2(NotificationManager notificationManager) {
    showSingleNotification(notificationManager, "title 2", "message 2", 2);
}

protected void showSingleNotification(NotificationManager notificationManager,
                                      String title,
                                      String message,
                                      int notificationId) {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
    builder.setContentTitle(title)
            .setContentText(message)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setGroupSummary(false)
            .setGroup("group");
    Notification notification = builder.build();
    notificationManager.notify(notificationId, notification);
}

private void showGroupSummaryNotification(NotificationManager notificationManager) {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this); …

我正在测试可堆叠通知(Stacking Notifications文章).

我发现在某些情况下,notify()在运行android 4.X KitKat的设备中调用后,通知未显示.

为了简单地解决问题,我创建了这个模拟通知的代码(button1)和带有摘要的第二个通知(button2)

private final static int NOTIFICATION_ID_A=6;
private final static int NOTIFICATION_ID_B = 7;
private final static int NOTIFICATION_ID_SUMMARY = 8;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            showNotif(NOTIFICATION_ID_A,false);
        }
    });
    findViewById(R.id.button2).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            showNotif(NOTIFICATION_ID_B,false);
            showNotif(NOTIFICATION_ID_SUMMARY,true);
        }
    });
}

private void showNotif(int notificationId,boolean groupSummary) {
    CharSequence title="Title "+notificationId;
    CharSequence message="Message "+notificationId;
    NotificationCompat.Builder notifBuilder = new NotificationCompat.Builder(this); …