Notification

1,创建一个class继承IntentService；

package com.service;

import com.broadcast.BroadcastReiverActivity;

import android.R;
import android.R.integer;
import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class StatusService extends IntentService {
    private static final int K = 0;
    public StatusService(String name) {
        super(name);
        // TODO Auto-generated constructor stub
    }
    public StatusService () {
        super("StatusService");
    }
    @Override
    protected void onHandleIntent(Intent intent) {
        // TODO Auto-generated method stub
        Log.i("StatusService", "开始下载....");
        showNotification();
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        Log.i("StatusService", "开始完毕....");
    }
    
    private void  showNotification() {
        Notification notification = new Notification(R.drawable.ic_btn_speak_now, "开始下载", System.currentTimeMillis());
        Intent intent = new Intent(this,BroadcastReiverActivity.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        notification.setLatestEventInfo(this, "下载", "你好吗，我在下载哦", contentIntent);
        NotificationManager mNotificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager .notify(K, notification);
    }

}

 在MainAtivity中设置监听按钮，启动service；

package com.broadcast;

import com.service.StatusService;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class BroadcastReiverActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button st = (Button)findViewById(R.id.st);
        st.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(BroadcastReiverActivity.this,StatusService.class);
                startService(intent);
            }
        });
        
    }
}

3，配置service