綁定本地Service并與之通信

綁定本地Service并與之通信2<!--制作可以顯示不同字體、不同顏色的文本、URL的界面-->任務(wù)陳述3<!--點(diǎn)擊“綁定Service”按鈕，會(huì)先后彈出如下提示框-->任務(wù)陳述4<!--點(diǎn)擊“獲取Service狀態(tài)”按鈕，會(huì)彈出如下提示框-->任務(wù)陳述5<!--點(diǎn)擊“解除綁定”按鈕，會(huì)彈出如下提示框-->任務(wù)陳述6<!--新建一個(gè)Android工程，命名為BindService--><!--創(chuàng)建一個(gè)可實(shí)現(xiàn)返回?cái)?shù)據(jù)的服務(wù)，在res下創(chuàng)建服務(wù)的源代碼類BindService-->public

class

BindService

extends

Service<!--定義onBinder方法所返回的對(duì)象-->private

MyBinder

binder

=

new

MyBinder();<!--通過繼承Binder來實(shí)現(xiàn)IBinder類-->public

class

MyBinder

extends

Binder

{

public

StringgetData()

{

return

"DatacomefromService";

}

}任務(wù)實(shí)施7<!--必須實(shí)現(xiàn)的方法，返回IBinder對(duì)象-->public

IBinderonBind(Intentintent)

{

System.out.println("ServiceisBinded");

//

返回IBinder對(duì)象

return

binder;

}<!--Service被創(chuàng)建時(shí)回調(diào)該方法-->public

void

onCreate()

{

super.onCreate();

Toast.makeText(BindService.this,

"ServiceisCreated",Toast.LENGTH_LONG).show();

}任務(wù)實(shí)施8<!--Service被斷開連接時(shí)回調(diào)該方法-->public

boolean

onUnbind(Intentintent)

{

Toast.makeText(BindService.this,

"ServiceisUnbinded",Toast.LENGTH_LONG).show();

return

true;

}<!--Service被關(guān)閉之前回調(diào)-->

public

void

onDestroy()

{

super.onDestroy();

Toast.makeText(BindService.this,

"ServiceisDestroyed",Toast.LENGTH_LONG).show();

}任務(wù)實(shí)施9<!--在AndroidManifest.xml中對(duì)服務(wù)進(jìn)行注冊(cè)--><service

android:name=".BindService">

<intent-filter>

<!--

為該Service組件的intent-filter配置action-->

<action

android:name="org.crazyit.service.BIND_SERVICE"

/>

</intent-filter></service><!--在layout下添加布局文件main.xml，在onCreate方法中修改如下代碼-->

setContentView(R.layout.main);任務(wù)實(shí)施10<!--在Activity的源代碼中實(shí)現(xiàn)綁定Service，并獲取Service傳遞的數(shù)據(jù)-->public

class

MainActivity

extends

Activity{

Button

bind,

unbind,

getServiceStatus;<!--所啟動(dòng)的Service的IBinder對(duì)象-->

BindService.MyBinder

binder;<!--定義一個(gè)ServiceConnection對(duì)象-->private

ServiceConnection

conn

=

new

ServiceConnection(){<!--當(dāng)該Activity與Service連接成功時(shí)回調(diào)該方法-->public

void

onServiceConnected(ComponentNamename,IBinderservice){

System.out.println("--ServiceConnected--");任務(wù)實(shí)施11<!--獲取Service的onBind方法所返回的MyBinder對(duì)象-->binder

=(BindService.MyBinder)service;

}<!--當(dāng)該Activity與Service斷開連接時(shí)回調(diào)該方法-->

public

void

onServiceDisconnected(ComponentNamename){

System.out.println("--ServiceDisconnected--");

}

};<!--獲取程序界面中的start、stop、getServiceStatus按鈕-->bind

=(Button)findViewById(R.id.bind);

unbind

=(Button)findViewById(R.id.unbind);

getServiceStatus

=(Button)findViewById(R.id.getServiceStatus);任務(wù)實(shí)施12<!--創(chuàng)建啟動(dòng)Service的Intent-->final

Intentintent=

new

Intent();<!--為Intent設(shè)置Action屬性-->

intent.setAction("org.crazyit.service.BIND_SERVICE");

bind.setOnClickListener(new

OnClickListener(){

public

void

onClick(Viewsource){<!--綁定指定Serivce-->

bindService(intent,

conn,Service.BIND_AUTO_CREATE);任務(wù)實(shí)施13<!--解除綁定Serivce-->unbindService(conn);<!--獲取、并顯示Service的count值-->getServiceStatus.setOnClickListener(new

OnClickListener(){

public

void

onClick(Viewsource){

//

獲取、并顯