Question

好的，我已经设置了一个警报管理器，每10秒钟激活一次。我用吐司测试了它，它工作得很好，但我想要显示通知。我不能让这个代码编译。所有错误都发生在// NOTIFICATION之后，直到wl.release（）;

错误：

The constructor NotificationCompat.Builder(Alarm) is undefined
The constructor Intent(Alarm, Class<StatusOfChild>) is undefined
The method create(Context) in the type TaskStackBuilder is not applicable for the arguments (Alarm)
The method getSystemService(String) is undefined for the type Alarm

CODE：

package com.sjjgames.abortionappnoads;

import android.app.AlarmManager;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.widget.Toast;

    public class Alarm extends BroadcastReceiver
    {    
         @Override
         public void onReceive(Context context, Intent intent) 
         {   
             PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
             PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
             wl.acquire();

                // Put here YOUR code.
                //NOTIFICATION
                NotificationCompat.Builder mBuilder =
                        new NotificationCompat.Builder(this)
                        .setSmallIcon(R.drawable.icon)
                        .setContentTitle("My notification")
                        .setContentText("Hello World!");
                Intent resultIntent = new Intent(this, StatusOfChild.class);
                TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
                stackBuilder.addParentStack(StatusOfChild.class);
                stackBuilder.addNextIntent(resultIntent);
                PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);
                mBuilder.setContentIntent(resultPendingIntent);
                NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                mNotificationManager.notify(9011, mBuilder.build());

             wl.release();
         }

     public void SetAlarm(Context context)
     {
         AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
         Intent i = new Intent(context, Alarm.class);
         PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
         am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 10000, pi); // Millisec * Second * Minute
     }

     public void CancelAlarm(Context context)
     {
         Intent intent = new Intent(context, Alarm.class);
         PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
         AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
         alarmManager.cancel(sender);
     }




 }

Answer 1

对所有方法使用context而不是this。

喜欢这种方式。

   NotificationCompat.Builder mBuilder =
                            new NotificationCompat.Builder(context)
                            .setSmallIcon(R.drawable.icon)
                            .setContentTitle("My notification")
                            .setContentText("Hello World!");
                    Intent resultIntent = new Intent(context, StatusOfChild.class);
                    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
                stackBuilder.addParentStack(StatusOfChild.class);
                stackBuilder.addNextIntent(resultIntent);
                PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);
                mBuilder.setContentIntent(resultPendingIntent);
                NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
                mNotificationManager.notify(9011, mBuilder.build());

在Alarm Manager中显示通知

1 个答案: