android Bound Service使用:使用Message类绑定服务

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activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

   <Button android:id="@+id/current_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="当前时间"
        android:textColor="@android:color/white"
        android:textSize="25dp"/>

</RelativeLayout>

CurrentTimeService1.java

package com.example.demoboundservice;

import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.text.format.Time;
import android.widget.Toast;

public class CurrentTimeService1 extends Service{
	
	public static final int CURRENT_TIME=0;
	
	private class IncomingHandler extends Handler{
		public void handleMessage(Message msg){
			if(msg.what==CURRENT_TIME){
				Time time = new Time();
				time.setToNow();
				String currentTime = time.format("%Y-%m-%d %H:%M:%S");
				Toast.makeText(CurrentTimeService1.this,currentTime,Toast.LENGTH_LONG).show();
			}else{
				super.handleMessage(msg);
			}
		}
	}
	

	
	public IBinder onBind(Intent intent){

		Messenger messenger = new Messenger(new IncomingHandler());
		return messenger.getBinder();
	}
	
}

CurrentTimeActivity.java：

package com.example.demoboundservice;

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.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.view.View;
import android.widget.Button;

public class CurrentTimeActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}

	
	Messenger messenger;
	boolean bound;
	
	protected void onStart(){
		super.onStart();
		Button button = (Button)findViewById(R.id.current_time);
		button.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View view) {

				Intent intent = new Intent(CurrentTimeActivity.this,CurrentTimeService.class);
				bindService(intent,connection,BIND_AUTO_CREATE);
				if(bound){
					Message message = Message.obtain(null,CurrentTimeService1.CURRENT_TIME,0,0);
					try{
						messenger.send(message);
					}catch(RemoteException e){
						e.printStackTrace();
					}
				}
			}
		});
	}
	
	
	protected void onStop(){
		super.onStop();
		if(bound){
			bound  = false;
			unbindService(connection);
		}
	}
	
	private ServiceConnection connection = new ServiceConnection(){
		public void onServiceDisconnected(ComponentName name){
			messenger = null;
			bound = false;
		}
		public void onServiceConnected(ComponentName name,IBinder service){
			messenger = new Messenger(service);
			bound = true;
		}
	};

}

AndroidManifest.xml：

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

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

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
        <service android:name="com.example.demoboundservice.CurrentTimeService1"/>
    </application>

</manifest>

转载于:https://my.oschina.net/u/2552902/blog/543891