AIDL(2):通过传输复杂对象

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IPC通过AIDL传递复杂对象

1.定义数据传输对象

Person.aidl文件：

Person.java文件中：

（1）实现parcelable接口

（2）提供一个名为CREATOR的static final属性

package com.liujun.aidl;

import android.os.Parcel;

import android.os.Parcelable;

public class Person implements Parcelable{

private String name;

private int sex;

public Person(){

}

public Person(Parcel source){

readFromParcel(source);

}

//必须提供一个名为CREATOR的static final属性该属性需要实现android.os.Parcelable.Creator<T>接口

public static final Parcelable.Creator<Person> CREATOR =new Parcelable.Creator<Person>() {

@Override

public Person createFromParcel(Parcel source) {

return new Person(source);

}

@Override

public Person[] newArray(int size) {

return new Person[size];

}

};

@Override

public int describeContents() {

return 0;

}

//注意读取变量和写入变量的顺序应该一致不然得不到正确的结果

@Override

public void writeToParcel(Parcel dest, int flags) {

dest.writeString(name);

dest.writeInt(sex);

}

//注意读取变量和写入变量的顺序应该一致不然得不到正确的结果

public void readFromParcel(Parcel source) {

name = source.readString();

sex = source.readInt();

}

//////////////////////////////////////////////////////////////////

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getSex() {

return sex;

}

public void setSex(int sex) {

this.sex = sex;

}

2.定义远程服务接口和服务组件

IGreetService.aidl文件：

package com.liujun.aidl;

import com.liujun.aidl.Person;

interface IGreetService{

String greet(in Person person);

}

AIDLService.java文件：

package com.liujun.service;

import com.liujun.aidl.IGreetService;

import com.liujun.aidl.Person;

import android.app.Service;

import android.content.Intent;

import android.os.IBinder;

import android.os.RemoteException;

import android.util.Log;

public class AIDLService extends Service {

private static final String TAG = "liujun";

@Override

public void onCreate() {

Log.i(TAG, "onCreate() called");

super.onCreate();

}

@Override

public IBinder onBind(Intent arg0) {

Log.i(TAG, "onBind() called");

return stub;

}

//服务接口实例对象

IGreetService.Stub stub=new IGreetService.Stub() {

@Override

public String greet(Person person) throws RemoteException {

Log.i(TAG, "greet(Person person) called");

return ServiceMethod(person);

}

};

@Override

public boolean onUnbind(Intent intent) {

Log.i(TAG, "onUnbind() called");

return true;

}

@Override

public void onDestroy() {

super.onDestroy();

Log.i(TAG, "onDestroy() called");

}

/////////////////-----------------------------------

/**

* 服务组件方法

* @param person

* @return

public String ServiceMethod(Person person){

String greeting = "hello, " + person.getName();

switch (person.getSex()) {

case 0:

greeting = greeting + ", you're handsome."; 工程代码

break;

case 1:

greeting = greeting + ", you're beautiful.";

break;

}

return greeting;

}

注册服务：

<intent-filter>

</intent-filter>

</service>

3.客户端程序复制服务端程序数据传输对象和接口文件

4.绑定远程服务，调用远程服务方法，传输复杂对象

package com.liujun.parcelableclient;import android.app.Activity;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.IBinder;import android.os.RemoteException;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;import com.example.parcelableclient.R;import com.liujun.aidl.IGreetService;import com.liujun.aidl.Person;public class MainActivity extends Activity { //控件 private Button bindBtn;   private Button greetBtn;   private Button unbindBtn;    private boolean mBound=false;//是否绑定远程服务  //远程服务接口对象 private IGreetService iService;  //获取远程服务接口对象 private ServiceConnection conn=new ServiceConnection() {@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {iService=IGreetService.Stub.asInterface(service);mBound=true;}   @Overridepublic void onServiceDisconnected(ComponentName name) {mBound=false;iService=null;}}; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);bindBtn=(Button) this.findViewById(R.id.bindBtn);greetBtn=(Button) this.findViewById(R.id.greetBtn);unbindBtn=(Button) this.findViewById(R.id.unbandBtn);//注册点击监听器MyListener listener=new MyListener();bindBtn.setOnClickListener(listener);greetBtn.setOnClickListener(listener);unbindBtn.setOnClickListener(listener);}/** * 事件处理器 * @author asus * */private class MyListener implements OnClickListener{@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bindBtn://绑定远程服务Intent intent = new Intent("android.intent.action.AIDLService");              bindService(intent, conn, Context.BIND_AUTO_CREATE);              //设置按钮状态            bindBtn.setEnabled(false);                  greetBtn.setEnabled(true);                  unbindBtn.setEnabled(true);  break;case R.id.greetBtn:  try {                        Person person = new Person();                    person.setName("liujun");                    person.setSex(0);                                        String retVal = iService.greet(person);                                        Toast.makeText(MainActivity.this, retVal, Toast.LENGTH_SHORT).show();                                    } catch (RemoteException e) {                                    Toast.makeText(MainActivity.this, "error", Toast.LENGTH_SHORT).show();                  }  break;case R.id.unbandBtn:                unbindService(conn);                                  bindBtn.setEnabled(true);                  greetBtn.setEnabled(false);                  unbindBtn.setEnabled(false);  break;}}}@Overrideprotected void onDestroy() {super.onDestroy();if (mBound) {unbindService(conn);iService=null;}}}

工程代码http://download.csdn.net/detail/u010739551/7710977

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