项目运用AIDL实现进程通信

项目使用AIDL实现进程通信

基本步骤

remoteService

1、生成aidl文件（先生成java的接口文件，修改后缀名为aidl，去掉public）

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2、定义业务服务StudentQueryService及其内部类StudentQueryBinder

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3、实现StudentQueryService的onBind()和query()

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4、在manifest中配置服务信息

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实现的代码

1、生成aidl文件

interface StudentQuery {String queryStudent(int number);}

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2、定义业务服务StudentQueryService及其内部类StudentQueryBinder

public class StudentQueryService extends Service {private final class StudentQueryBinder extends StudentQuery.Stub{public String queryStudent(int number) throws RemoteException {return query(number);}}}

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3、实现StudentQueryService的onBind()和query()

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@Overridepublic IBinder onBind(Intent intent) {return binder;}private String query(int number){if(number > 0 && number < 4){return names[number - 1];}return null;}

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4、在manifest中配置服务信息

       <service android:name=".StudentQueryService">            <intent-filter >                <action android:name="com.peter.remoteservice.queryinfo"/>                            </intent-filter>                    </service>

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remoteServiceClient的基本操作和实现代码

基本操作

1、新建工程和Activity, copy刚才的aidl文件到src下

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2、在Activity中添加StudentQuery属性，新建内部类StudentConnection

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3、实现onCreate() onDestroy()、按钮处理事件、业务逻辑方法等

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实现代码

2、在Activity中添加StudentQuery属性，新建内部类StudentConnection

private StudentQuery studentQuery;private final class StudentConnection implements ServiceConnection {public void onServiceConnected(ComponentName name, IBinder service) {studentQuery = StudentQuery.Stub.asInterface(service);}public void onServiceDisconnected(ComponentName name) {studentQuery = null;}}

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3、实现onCreate() onDestroy()、按钮处理事件、业务逻辑方法等

@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);numberText = (EditText) this.findViewById(R.id.number);resultView = (TextView) this.findViewById(R.id.resultView);Intent intent = new Intent("com.peter.remoteservice.queryinfo");bindService(intent, conn, BIND_AUTO_CREATE);}public void queryStudent(View v) {String number = numberText.getText().toString();int num = Integer.valueOf(number);try {resultView.setText(studentQuery.queryStudent(num));} catch (RemoteException e) {e.printStackTrace();}}@Overrideprotected void onDestroy() {unbindService(conn);super.onDestroy();}

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