service practice

package com.example.servicedownlaod.service;


import android.app.Notification;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;

import com.example.servicedownlaod.MainActivity;
import com.example.servicedownlaod.R;

public class MyService extends Service {
	public static final String TAG = "MyService";
	public MyBinder mBinder = new MyBinder();

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

	@Override
	public void onCreate() {
		// TODO Auto-generated method stub
		super.onCreate();
		Notification mNotification = new Notification(R.drawable.ic_launcher, "有通知到来", System.currentTimeMillis());
		Intent mNotificationIntent = new Intent(this ,MainActivity.class);
		PendingIntent mPendingIntent = PendingIntent.getActivity(this, 0, mNotificationIntent, 0);
		mNotification.setLatestEventInfo(this, "通知标题", "通知内容", mPendingIntent);
		startForeground(1, mNotification);
	}

	@Override
	public int onStartCommand(Intent intent, int flags, int startId) {
		// TODO Auto-generated method stub
		new Thread(new Runnable() {  
	        @Override  
	        public void run() {  
	            // 开始执行后台任务  
	        	Log.d("TAG", "startDownload() executed");  
	        }  
	    }).start();  
		return super.onStartCommand(intent, flags, startId);
	}

	@Override
	public void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
	}
	
	public class MyBinder extends Binder{
		public void startDownload() {  
	        new Thread(new Runnable() {  
	            @Override  
	            public void run() {  
	                // 执行具体的下载任务  
	            	Log.d("TAG", "startDownload() executed");  
	            }  
	        }).start();  
	    }  
	}
}

activity

package com.example.servicedownlaod;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.view.View;
import android.widget.Button;

import com.example.servicedownlaod.service.MyService;
import com.example.servicedownlaod.service.MyService.MyBinder;

public class MainActivity extends Activity implements android.view.View.OnClickListener{
	 private Button startService;  
	  
	    private Button stopService;  
	  
	    private Button bindService;  
	  
	    private Button unbindService;  
	  
	    private MyService.MyBinder mBinder; 
	    private ServiceConnection mServiceConnection = new ServiceConnection() {
			
			@Override
			public void onServiceDisconnected(ComponentName name) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void onServiceConnected(ComponentName name, IBinder service) {
				// TODO Auto-generated method stub
				mBinder = (MyBinder) service;
				mBinder.startDownload();
			}
		};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        startService = (Button) findViewById(R.id.start_service);  
        stopService = (Button) findViewById(R.id.stop_service);  
        bindService = (Button) findViewById(R.id.bind_service);  
        unbindService = (Button) findViewById(R.id.unbind_service);  
        startService.setOnClickListener(this);  
        stopService.setOnClickListener(this);  
        bindService.setOnClickListener(this);  
        unbindService.setOnClickListener(this);  
    }

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		  switch (v.getId()) {  
	        case R.id.start_service:  
	            Intent startIntent = new Intent(this, MyService.class);  
	            startService(startIntent);  
	            break;  
	        case R.id.stop_service:  
	            Intent stopIntent = new Intent(this, MyService.class);  
	            stopService(stopIntent);  
	            break;  
	        case R.id.bind_service:  
	            Intent bindIntent = new Intent(this, MyService.class);  
	            bindService(bindIntent, mServiceConnection, BIND_AUTO_CREATE);  
	            break;  
	        case R.id.unbind_service:  
	            unbindService(mServiceConnection);  
	            break;  
	        default:  
	            break;  
	        }  
	}

	
}

<service android:name="com.example.servicedownlaod.service.MyService"></service>

intentservice：

public class MyIntentService extends IntentService {
public MyIntentService() {
super("MyIntentService"); // 调用父类的有参构造函数
}
@Override
protected void onHandleIntent(Intent intent) {
// 打印当前线程的id
Log.d("MyIntentService", "Thread id is " + Thread.currentThread().
getId());
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("MyIntentService", "onDestroy executed");
}
}