10 BindService

----------------------main.java------------------

package com.example.cd;


import android.app.Service;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {


Button bind , unbind , getServiceStatus;
// 保持所启动的Service的IBinder对象
BindService.MyBinder binder;
// 定义一个ServiceConnection对象
private ServiceConnection conn = new ServiceConnection()
{
// 当该Activity与Service连接成功时回调该方法
@Override
public void onServiceConnected(ComponentName name
, IBinder service)
{
System.out.println("--Service Connected--");
// 获取Service的onBind方法所返回的MyBinder对象
binder = (BindService.MyBinder) service;
}
// 当该Activity与Service断开连接时回调该方法
@Override
public void onServiceDisconnected(ComponentName name)
{
System.out.println("--Service Disconnected--");
}
};
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 获取程序界面中的start、stop、getServiceStatus按钮
bind = (Button) findViewById(R.id.bind);
unbind = (Button) findViewById(R.id.unbind);
getServiceStatus = (Button) findViewById(R.id.getServiceStatus);
//创建启动Service的Intent
final Intent intent = new Intent();
//为Intent设置Action属性
intent.setAction("org.crazyit.service.BIND_SERVICE");
bind.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View source)
{
//绑定指定Serivce
bindService(intent , conn , Service.BIND_AUTO_CREATE);
}
});
unbind.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View source)
{
//解除绑定Serivce
unbindService(conn);
}
});
getServiceStatus.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View source)
{
// 获取、并显示Service的count值
Toast.makeText(MainActivity.this
, "Serivce的count值为：" + binder.getCount()
, 4000)
.show();
}
});
}
}

---------------------BindService.java--------------------

package com.example.cd;


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


public class BindService extends Service
{
private int count;
private boolean quit;
// 定义onBinder方法所返回的对象
private MyBinder binder = new MyBinder();
// 通过继承Binder来实现IBinder类
public class MyBinder extends Binder
{
public int getCount()
{
// 获取Service的运行状态：count
return count;
}
}
// 必须实现的方法
@Override
public IBinder onBind(Intent intent)
{
System.out.println("Service is Binded");
// 返回IBinder对象
return binder;
}
// Service被创建时回调该方法。
@Override
public void onCreate()
{
super.onCreate();
System.out.println("Service is Created");
// 启动一条线程、动态地修改count状态值
new Thread()
{
@Override
public void run()
{
while (!quit)
{
try
{
Thread.sleep(1000);
}
catch (InterruptedException e)
{
}
count++;
}
}
}.start();
}
// Service被断开连接时回调该方法
@Override
public boolean onUnbind(Intent intent)
{
System.out.println("Service is Unbinded");
return true;
}
// Service被关闭之前回调。
@Override
public void onDestroy()
{
super.onDestroy();
this.quit = true;
System.out.println("Service is Destroyed");
}

@Override
public void onRebind(Intent intent) 
{
super.onRebind(intent);
this.quit = true;
System.out.println("Service is ReBinded");
}
}

。。。。。。。。。。。。。main.xml。。。。。。。。。。。。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
>
<Button
android:id="@+id/bind"  
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:text="bind"
/>
<Button
android:id="@+id/unbind"  
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:text="unbind"
/>
<Button
android:id="@+id/getServiceStatus"  
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:text="getServiceStatus"
/>
</LinearLayout>

。。。。。。。。。AndroidManiFest.xml。。。。。。。。。。。。。

<!-- 配置一个Service组件 -->
<service android:name=".BindService">
<intent-filter>
<!-- 为该Service组件的intent-filter配置action -->
<action android:name="org.crazyit.service.BIND_SERVICE" />
</intent-filter>
</service>