Android service实例

最新推荐文章于 2023-05-15 23:11:58 发布

jingzitakk66

最新推荐文章于 2023-05-15 23:11:58 发布

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文章标签：移动开发 java

本文详细介绍了如何使用Java创建服务并实现远程调用，包括创建服务类、生成AIDL文件、打包为jar包、修改manifest文件以及客户端如何连接和服务交互的过程。

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[/code]首先继承Service
[code="java"]
package com.tcl.kang.demo;

import com.tcl.kang.demo.ICountService;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;

public class MyService extends Service
{


	@Override
	public void onCreate() {
		// TODO Auto-generated method stub
		super.onCreate();
	}


	private ICountService.Stub myBinder = new ICountService.Stub()
	{		
		@Override
		public int getCount() throws RemoteException
		{
			// TODO Auto-generated method stub
			return 0;
		}
	};

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

}

创建一个aidl文件 ICountService.aidl,这时会在gen目录下生成一个java文件，将java文件打包成jar。


package com.tcl.kang.demo;

interface ICountService
{
	int getCount();
}

修改manifest.xml


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.tcl.kang.demo" android:versionCode="1"
	android:versionName="1.0">
	<application>
	<service android:name=".MyService">
		<intent-filter>
			<action android:name="com.tcl.kang.demo.MyService" />
			<category android:name="android.intent.category.DEFAULT" />			
		</intent-filter>
	</service>
	</application>
	<uses-sdk android:minSdkVersion="8" />

</manifest>

客户端：首先包含刚才的jar包,


package com.tcl.testservice2;

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.os.RemoteException;
import android.util.Log;

import com.tcl.kang.demo.ICountService;

public class TestService2Activity extends Activity {
	private ICountService countService;	
	private ServiceConnection myConnection = new ServiceConnection()
	{

		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			countService = (ICountService.Stub.asInterface(service));
			try {
				Log.v("", "kang: count="+countService.getCount());
			} catch (RemoteException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}

		@Override
		public void onServiceDisconnected(ComponentName name) {
			// TODO Auto-generated method stub
			countService = null;
		}

	};
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        bindService(new Intent("com.tcl.kang.demo.MyService"),myConnection, BIND_AUTO_CREATE);        
    }
	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		unbindService(myConnection);
	}

}