为什么我的推送通知不断重复不规则？

Question

使用警报管理器和待处理意图设置的推送通知显示异常行为。出于某种原因，在我打开应用程序后，通知出现一分钟或更少。有时一分钟不止一次，那么它暂时不会出现。我的想法是每天发布一次通知，假设用户在24小时内没有访问我的应用程序。我打算取消任何以前的计时器，并在用户下一次访问我的应用程序时启动一个新的计时器。以下是我的代码。

public class Main_Menu extends AppCompatActivity { 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main_menu); 

    this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); 


    Button goToGame1; 

    goToGame1 = (Button) findViewById(R.id.Game1); 
    goToGame1.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent beAtGame1 = new Intent(Main_Menu.this, memory_modes.class); 
      startActivity(beAtGame1); 
     } 
    }); 


Button goToGame2; 

    goToGame2 = (Button) findViewById(R.id.Game2); 
    goToGame2.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent beAtGame2 = new Intent(Main_Menu.this, computation_modes.class); 
      startActivity(beAtGame2); 
     } 
    }); 


Button goToGame3; 

    goToGame3 = (Button) findViewById(R.id.Game3); 
    goToGame3.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent beAtGame3 = new Intent(Main_Menu.this, evaluation_modes.class); 
      startActivity(beAtGame3); 
     } 
    }); 


    Button goToGame4; 

    goToGame4 = (Button) findViewById(R.id.Game4); 
    goToGame4.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent beAtGame4 = new Intent(Main_Menu.this, attention_modes.class); 
      startActivity(beAtGame4); 
     } 
    }); 


    Button goToTrackers; 

    goToTrackers = (Button) findViewById(R.id.Trackers); 
    goToTrackers.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent beAtTrackers = new Intent(Main_Menu.this,trackerMenu.class); 
      startActivity(beAtTrackers); 
     } 
    }); 



    Intent intent = new Intent(Main_Menu.this, Receiver.class); 
    PendingIntent pendingIntent = PendingIntent.getBroadcast(Main_Menu.this, 1, intent, 0); 
    AlarmManager alarm = (AlarmManager)getSystemService(ALARM_SERVICE); 
    alarm.cancel(pendingIntent); 
    alarm.setRepeating(alarm.RTC_WAKEUP, System.currentTimeMillis(), alarm.INTERVAL_DAY, pendingIntent); 


    } 

public void onBackPressed() { 
    Intent intent = new Intent(Intent.ACTION_MAIN); 
    intent.addCategory(Intent.CATEGORY_HOME); 
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
    startActivity(intent); 
} 

} 

和

public class Receiver extends BroadcastReceiver { 
@Override 
public void onReceive(Context context, Intent intent) { 
    showNotification(context); 
} 

public void showNotification(Context context) { 
    Intent intent = new Intent(context, Main_Menu.class); 
    PendingIntent pi = PendingIntent.getActivity(context, 1, intent, 0); 
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context) 
      .setSmallIcon(R.drawable.smalliconfinal) 
      .setColor(Color.argb(000,255,177,17)) 
      .setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.icon4)) 
      .setContentTitle("Title") 
      .setContentText("Some text."); 
    mBuilder.setLights(0xffffb111, 750, 750); 
    mBuilder.setContentIntent(pi); 
    mBuilder.setDefaults(Notification.DEFAULT_SOUND); 
    mBuilder.setAutoCancel(true); 
    NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 
    mNotificationManager.notify(1, mBuilder.build()); 
} 

} 

，并从我的清单：

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

谁知道为什么发生此问题？

非常感谢， 谢谢。

Answer 1

AlarmManager.setRepeating方法的第二个参数是警报首先熄灭的时间。

您使用这些参数调用此方法：

alarm.setRepeating(alarm.RTC_WAKEUP, System.currentTimeMillis(), alarm.INTERVAL_DAY, pendingIntent); 

这意味着你设置的重复报警，只要你调用方法（当创建Main_Menu活动）熄灭。

从你的描述好像你正在寻找的东西是这样的：

alarm.setRepeating(AlarmManager.RTC_WAKEUP, (System.currentTimeMillis() + AlarmManager.INTERVAL_DAY), AlarmManager.INTERVAL_DAY, pendingIntent);