Android 跨进程通信（二）

2. 客户端实现：
      （1）目录结构，如下图：
               
      （2）将服务器端的IAIDLService.aidl，Person.aidl和Person.java文件拷贝到本工程中，如上图所示：
      （3）res/layout/main.xml实现：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android"
android:orientation = "vertical"
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
>

<TextView
android:id = "@+id/name"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
/>

<Button
android:id = "@+id/connection"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:text = "连接"
/>

<Button
android:id = "@+id/message"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:enabled = "false"
android:text = "信息"
/>

<Button
android:id = "@+id/person"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:enabled = "false"
android:text = "人"
/>

</LinearLayout>

（4）主Activity实现，从服务器端获取数据在客户端显示：

package eoe.demo;

import android.app.Activity;
import android.content.ComponentName;
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.TextView;

import com.focus.aidl.IAIDLService;
import com.focus.aidl.Person;

public class AIDLClientAcitivty extends Activity {

private IAIDLService mAIDLService;
private TextView mName;
private Button mMessage;
private Button mPerson;

/**
* 第一步，创建ServiceConnection对象，在onServiceConnected()方法中获取IAIDLService实现。
*/
private ServiceConnection mServiceConnection = new ServiceConnection() {

public void onServiceConnected(ComponentName name, IBinder service) {
mAIDLService = IAIDLService.Stub.asInterface(service);

mMessage.setEnabled(true);
mPerson.setEnabled(true);
}

public void onServiceDisconnected(ComponentName name) {
mAIDLService = null;

mMessage.setEnabled(false);
mPerson.setEnabled(false);
}

};

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.main);
mName = (TextView) findViewById(R.id.name);

findViewById(R.id.connection).setOnClickListener(new OnClickListener() {
public void onClick(View view) {

/**
* 第二步，单击"连接"按钮后用mServiceConnection去bind服务器端创建的Service。
*/
Intent service = new Intent("com.focus.aidl.IAIDLService");
bindService(service, mServiceConnection, BIND_AUTO_CREATE);

}
});

mMessage = (Button) findViewById(R.id.message);
mMessage.setOnClickListener(new OnClickListener() {
public void onClick(View view) {


/**
* 第三步，从服务器端获取字符串。
*/
try {
mName.setText(mAIDLService.getName());
} catch (RemoteException e) {
e.printStackTrace();
}
}
});

mPerson = (Button) findViewById(R.id.person);
mPerson.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
/**
* 第四步，从服务器端获取Person对象。
*/
try {
Person mPerson = mAIDLService.getPerson();
mName.setText("姓名:" + mPerson.getName() + ", 年龄:" + mPerson.getAge());
} catch (RemoteException e) {
e.printStackTrace();
}
}
});
}

}