AIDL(2):通过传输复杂对象

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：

<!-- 配置服务组件 -->

<service android:name="com.liujun.service.AIDLService">

<intent-filter>

<action android:name="android.intent.action.AIDLService" />

<category android:name="android.intent.category.DEFAULT" />

</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() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
iService=IGreetService.Stub.asInterface(service);
mBound=true;
}

@Override
public void onServiceDisconnected(ComponentName name) {
mBound=false;
iService=null;
}
};

@Override
protected 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{
@Override
public 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;
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mBound) {
unbindService(conn);
iService=null;
}
}
}

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