12 StatusBar

package com.szy.status;

import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.util.Log;

/**
 * @author coolszy
 * @blog http://blog.csdn.net/coolszy
 */
public class StatusService extends IntentService
{
    private static final String TAG = "StatusService";

    // private static final int KUKA = 0;

    public StatusService()
    {
        super("StatusService");
    }

    @Override
    protected void onHandleIntent(Intent intent)
    {
        Log.i(TAG, "开始下载....");
        showNotification(false);
        try
        {
            Thread.sleep(10000);
            showNotification(true);
        } catch (InterruptedException e)
        {
            e.printStackTrace();
        }
        Log.i(TAG, "程序下载完毕");
    }

    private void showNotification(boolean finish)
    {
        Notification notification;
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        Intent intent = new Intent(this, MainActivity.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        if (!finish)
        {
            notification = new Notification(R.drawable.head, "开始下载", System.currentTimeMillis());
            notification.setLatestEventInfo(this, "下载", "正在下载中", contentIntent);
        }
        else
        {
            notification = new Notification(R.drawable.head, "下载完毕", System.currentTimeMillis());
            notification.setLatestEventInfo(this, "下载", "程序下载完毕", contentIntent);
        }
        notification.defaults=Notification.DEFAULT_ALL;
        manager.notify(R.layout.main, notification);
        
    }

}

package com.szy.status;

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

public class MainActivity extends Activity
{
    private Button btnStartService;
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btnStartService=(Button)findViewById(R.id.btnStartService);
        btnStartService.setOnClickListener(new OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                Intent intent=new Intent(MainActivity.this, StatusService.class);
                startService(intent);
            }
        });
    }
    
    @Override
    protected void onStart()
    {
        super.onStart();
        NotificationManager manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        manager.cancel(R.layout.main);
    }
    
    
}