Question

编辑：更新的代码：

notificationsetter方法：

public void notificationsetter(){
        Intent myIntent = new Intent(this, MyReceiver.class);
        AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, myIntent, 0);
        Log.v("log","notificationsetter");
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 21);
        calendar.set(Calendar.MINUTE, 55);
        calendar.set(Calendar.SECOND, 00);

        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 24*60*60*1000 , pendingIntent);
    }

Myreceiver类：

public class MyReceiver extends BroadcastReceiver {
    private static final String TAG = "MyActivity";
    @Override
    public void onReceive(Context context, Intent intent) {
        String i = "Log recieved";
        Log.v(TAG, "index=" + i);
        Frontpage.displayNotificationActivity(context);
    }
}

最后，显示通知活动方法：

public static void displayNotificationActivity(Context context){
    int notificationIdOne = 111;
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context);

    mBuilder.setContentTitle("Leibniz Vertretungsplan");
    mBuilder.setContentText("Schau dir den Vertretungsplan an!");
    mBuilder.setTicker("Leibniz Vertretungsplan");
    SharedPreferences pref= PreferenceManager.getDefaultSharedPreferences(context);
    String text = pref.getString("notifications_new_message_ringtone","");
    mBuilder.setSound(Uri.parse(text));
    mBuilder.setAutoCancel(true);
    SharedPreferences pref2= PreferenceManager.getDefaultSharedPreferences(context);
    boolean vibrate = pref2.getBoolean("notifications_new_message_vibrate",false);
    if(vibrate){
        mBuilder.setVibrate(new long[] {1000, 1000});
    }
    mBuilder.setLights(0xffff0000,5000,5000);
    mBuilder.setSmallIcon(R.mipmap.ic_launcher);
    //mBuilder.setNumber(++numMessagesOne);
    Intent resultIntent = new Intent(context, Vertretungsplanheuteactvity.class);
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    stackBuilder.addParentStack(Frontpage.class);
    stackBuilder.addNextIntent(resultIntent);
    PendingIntent resultPendingIntent =
            stackBuilder.getPendingIntent(
                    0,
                    PendingIntent.FLAG_ONE_SHOT //can only be used once
            );

    mBuilder.setContentIntent(resultPendingIntent);
    NotificationManager myNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    myNotificationManager.notify(notificationIdOne, mBuilder.build());

}

问题：我在日历中设置时没有显示通知。 Logcat说使用了notificationsetter，但是onReceive方法并没有。我按下按钮启动notifcation方法，将来会改变它。

Answer 1

像这样创建一个BroadcastReceiver类：

public class MyReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
         MainActivity.displayNotification(context);
    }
}

将此添加到您的清单：

<receiver android:name=".MyReceiver"/>

为您的闹钟创建PendingIntent，如下所示：

Intent myIntent = new Intent(this, MyReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, myIntent, 0);

更改您的displayNotification()方法，使其获得Context参数并将其设为static（以便可以从MyReceiver调用）。在displayNotification()中，将this的所有用途替换为context。您还需要使用context引用来调用getApplicationContext()和getSystemService()等方法。

应该工作; - ）

使用意图的方法

1 个答案: