Question

美好的一天，我想在~10：00每天发出通知。

来自主要活动onCreate（）的代码片段：

  Intent mIntent = new Intent(this, NotifyService.class);
        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        PendingIntent pendingIntent = PendingIntent.getService(this, 0, mIntent, 0);

        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(System.currentTimeMillis());
        calendar.set(Calendar.HOUR_OF_DAY, 10);


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

这是NotifyService.class：

public class NotifyService extends Service {
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        Intent notificationIntent = new Intent(this,HomeActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent,0);
        Notification notification = new Notification.Builder(this)
                .setContentTitle("Horoscope reminder")
                .setContentText("Check your daily horoscope")
                .setSmallIcon(R.drawable.notification_icon)
                .setWhen(System.currentTimeMillis())
                .setContentIntent(pendingIntent)
                .build();
        notificationManager.notify(9999, notification);
        return super.onStartCommand(intent, flags, startId);
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}

在应用程序标记之后从AndroidManifest.xml排成行：<service android:name=".NotifyService"/>

当应用程序运行时，我遇到了这个问题随机推送通知，但是当应用程序关闭时没有任何反应。

无论如何，谢谢！

Answer 1

创建警报

在您的MainActivity.java中：

 public void setAlarm(){
        alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        alarmIntent = new Intent(MainActivity.this, AlarmReceiver.class);
        pendingIntent = PendingIntent.getBroadcast(  MainActivity.this, 0, alarmIntent, 0);

        alarmStartTime.set(Calendar.HOUR_OF_DAY, 10);
        alarmStartTime.set(Calendar.MINUTE, 00);
        alarmStartTime.set(Calendar.SECOND, 0);
        alarmManager.setRepeating(AlarmManager.RTC, alarmStartTime.getTimeInMillis(), getInterval(), pendingIntent);
    }
    private int getInterval(){
         int days = 1;
         int hours = 24;
         int minutes = 60;
         int seconds = 60;
         int milliseconds = 1000;
         int repeatMS = days * hours * minutes * seconds * milliseconds;
         return repeatMS;
    }

你会注意到我们有一个Receiver类。这是为了处理警报的广播。创建一个新类AlarmReceiver.java：

public class AlarmReceiver extends BroadcastReceiver {

NotificationManager notificationManager;

@Override
public void onReceive(Context context, Intent intent) {
    Intent service1 = new Intent(context, AlarmService.class);
        context.startService(service1);
  }

}

这只是将意图传递给我们将要创建的另一个类，即服务类。创建服务类（而不是仅仅在onReceive（）上执行）使它能够在后台运行。

public class AlarmService extends Service { 
private static final int NOTIFICATION_ID = 1;
private NotificationManager notificationManager;
private PendingIntent pendingIntent;

@Override
public IBinder onBind(Intent arg0)
{
    return null;
}

@SuppressWarnings("static-access")
@Override
public void onStart(Intent intent, int startId)
  {
   super.onStart(intent, startId);
   Context context = this.getApplicationContext();
   notificationManager = (NotificationManager)context.getSystemService(context.NOTIFICATION_SERVICE);
   Intent mIntent = new Intent(this, MainActivity.class);
   pendingIntent = PendingIntent.getActivity(context, 0, mIntent, PendingIntent.FLAG_CANCEL_CURRENT);     
   NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
   builder.setContentTitle("Bananas");
   builder.setContentText("get your bananas");
   builder.setSmallIcon(R.drawable.ic_launcher);
   builder.setContentIntent(pendingIntent);

   notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
   notificationManager.notify(NOTIFICATION_ID, builder.build());
  }
}

一些重要说明：上面，我们“setContentIntent（）”并告诉Android O / S用户点击后要加载的内容。 Pending Intent必须有一个新的Intent（），这将启动正确的应用程序。 AutoCancel与工作权之间存在冲突，因此我们在全局范围内清除MainActivity的onStart（）所有通知。

使用警报管理器和服务的Android每日通知

1 个答案: