Question

我需要在我的应用程序中创建服务以显示通知。我有服务代码：

package com.bba.droid;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;

public class AlertsMonitorService extends Service{

    @Override
    public IBinder onBind(Intent arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onCreate() {

        super.onCreate();
    }

    @Override
    public void onStart(Intent intent, int id) {

        NotificationManager notifyMngr=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notification=new Notification(R.drawable.icon_back, "Downloading...", System.currentTimeMillis());

        PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, null, 0);

        notification.setLatestEventInfo(this.getApplicationContext(), "YoutubeDownloader", "The video is downloading...", contentIntent);
        notifyMngr.notify(0, notification);
    }
}

我有主要活动的代码：

package com.bba.droid;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;

public class DroidTestActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Intent service=new Intent();
        service.setClass(this, AlertsMonitorService.class);
        this.startService(service);
    }
}

但是服务不会在状态栏中创建通知。我哪里弄错了？

Answer 1

我不知道这是否是唯一的问题，但您为意图中的活动指定了null：

PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, null, 0);

您想要指定将启动您的活动的意图：

Intent intent = new Intent(this, DroidTestActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, intent, 0);

在服务Android的状态栏中创建通知时遇到问题

1 个答案: