Android服务(Service)的用法

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1、首先自定义一个服务类MyService.java,继承自Service

package com.t20.servicedemo.serv;
/**
 * 服务类
 */
import com.t20.servicedemo.serv.function.PayMentInterface;
import com.t20.servicedemo.serv.function.PayMentInterface.Stub;

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

public class MyService extends Service {
	/**
	 * 绑定服务时,调用onBind方法
	 */
	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return new MyBinder();
	}
	/**
	 * 自定义的绑定器
	 * @author Administrator
	 *
	 */
	class MyBinder extends Stub{

		@Override
		public void payment(int money) {
			// TODO Auto-generated method stub
			pay(money);
		}		
	}
	
	/* (non-Javadoc)
	 * @see android.app.Service#onCreate()
	 */
	@Override
	public void onCreate() {
		// TODO Auto-generated method stub
		super.onCreate();
		Log.w("服务消息", "服务已启动");
	}

	/* (non-Javadoc)
	 * @see android.app.Service#onDestroy()
	 */
	@Override
	public void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		Log.w("服务消息", "服务已关闭");
	}
	
	private void pay(int money){
		Log.e("支付信息", "支付了"+money+"元");
	}

}

2、在清单文件AndroidManifest.xml中注册服务

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.t20.servicedemo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.t20.servicedemo.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!-- 注册服务 -->
        <service android:name="com.t20.servicedemo.serv.MyService">
          <intent-filter>
              <!-- 自定义支付服务的动作 -->
              <action android:name="com.xxx.pay"/>
          </intent-filter>
        </service>
    </application>

</manifest>

3、写一个支付接口PayMentInterface.aidl(接口定义好再把java后缀名改成aidl)

package com.t20.servicedemo.serv.function;
/**
 * 支付接口
 * @author Administrator
 *
 *注:aidl类不能加public
 */
interface PayMentInterface {
	void payment(int money);
}

4、MainActivity.java

package com.t20.servicedemo;

import com.t20.servicedemo.serv.MyService;
import com.t20.servicedemo.serv.function.PayMentInterface;

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

public class MainActivity extends Activity {

	private MyConnection conn;
	PayMentInterface pif;
	private EditText etMoney;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		etMoney=(EditText) findViewById(R.id.etMoney);
	}
	/**
	 * 开启服务
	 * @param v
	 */
	public void start(View v){
		Intent startIntent=new Intent();
		startIntent.setClass(MainActivity.this, MyService.class);
		//1.启动服务
		startService(startIntent);
		//2.创建活动与服务的连接
		conn=new MyConnection();
		//3.绑定服务与活动
		bindService(startIntent, conn, BIND_AUTO_CREATE);
		//-------------意图-------连接---绑定时自动创建(也可以写0)
	}
	
	/**
	 * 用于创建活动与服务连接的类(自定义)
	 * @author Administrator
	 *
	 */
	class MyConnection implements ServiceConnection{
		
		//连接启用时调用
		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			// TODO Auto-generated method stub
			//获取接口对象
			pif=(PayMentInterface) service;
		}
		//连接关闭时调用
		@Override
		public void onServiceDisconnected(ComponentName name) {
			// TODO Auto-generated method stub
		}
		
	}
	
	/**
	 * 停止服务
	 * @param v
	 */
	public void stop(View v){
		if(conn!=null){
			Intent stopIntent=new Intent();
			stopIntent.setClass(MainActivity.this, MyService.class);
			//解绑服务与活动
			unbindService(conn);
			pif=null;
			conn=null;
			//停止服务
			stopService(stopIntent);
		}
	}
	/**
	 * 支付功能
	 * @param v
	 */
	public void pay(View v){
		String moneyString=etMoney.getText().toString();
		if(moneyString.isEmpty()){
			Toast.makeText(MainActivity.this, "请输入金额", Toast.LENGTH_SHORT).show();
			return;
		}
		int money=Integer.parseInt(moneyString);
		if(pif!=null){
			try {
				pif.payment(money);
			} catch (RemoteException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}else{
			Toast.makeText(MainActivity.this, "请先开启服务", Toast.LENGTH_SHORT).show();
		}
	}
}

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转载自blog.csdn.net/qq15577969/article/details/80960175