Android AIDL demo

为使应用程序之间能够彼此通信，Android提供了IPC （Inter Process Communication，进程间通信）的一种独特实现： AIDL （Android Interface Definition Language， Android接口定义语言）。

1。新建项目App和AppHolder
2。App中新建Service

package com.louis.imoocaidl;import android.app.Service;import android.content.Intent;import android.os.IBinder;import android.os.RemoteException;import android.util.Log;public class MyService extends Service {    public MyService() {    }    @Override    public IBinder onBind(Intent intent) {        // TODO: Return the communication channel to the service.       // throw new UnsupportedOperationException("Not yet implemented");       return iBinder;    }    private  IBinder iBinder= new IMyAidlInterface.Stub() {        @Override        public int plus(int numA, int numB) throws RemoteException {            Log.i("louis","louis==xx==numA:"+numA+"numB:"+numB);            return numA+numB;        }    };}

3。App中新建aidl，然后AppHolder中新建相同包名，复制aidl过来

// IMyAidlInterface.aidlpackage com.louis.imoocaidl;// Declare any non-default types here with import statementsinterface IMyAidlInterface { int plus(int numA,int numB);}

4。appholder=》activity

package com.louis.appholder;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.support.design.widget.FloatingActionButton;import android.support.design.widget.Snackbar;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import com.louis.imoocaidl.IMyAidlInterface;public class MainActivity extends AppCompatActivity {    IMyAidlInterface im;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initViews();        bindSer();    }    private void initViews() {      final EditText et1= (EditText) findViewById(R.id.num1);        final EditText et2= (EditText) findViewById(R.id.num2);        final TextView result = (TextView) findViewById(R.id.result);        Button btn_plus= (Button) findViewById(R.id.btn_plus);        btn_plus.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //                int a = Integer.parseInt(et1.getText().toString());                int b = Integer.parseInt(et2.getText().toString());                int plusResult = 0;                try {                    plusResult = im.plus(a, b);                } catch (RemoteException e) {                    e.printStackTrace();                }                result.setText(String.valueOf(plusResult));            }        });    }    private void bindSer() {        Intent intent=new Intent();        intent.setComponent(new ComponentName("com.louis.imoocaidl", "com.louis.imoocaidl.MyService"));//5.0以后必须显示绑定        ServiceConnection conn=new ServiceConnection() {            @Override            public void onServiceConnected(ComponentName name, IBinder service) {                im= IMyAidlInterface.Stub.asInterface(service);            }            @Override            public void onServiceDisconnected(ComponentName name) {                im=null;            }        };        bindService(intent,conn,BIND_AUTO_CREATE);    }}

5。MainActivity的布局xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    app:layout_behavior="@string/appbar_scrolling_view_behavior"    tools:context="com.louis.appholder.MainActivity"    tools:showIn="@layout/activity_main"><EditText    android:id="@+id/num1"    android:layout_width="wrap_content"    android:layout_height="wrap_content" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="+"/>    <EditText        android:id="@+id/num2"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="="/>    <TextView        android:id="@+id/result"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="结果"/>    <Button        android:id="@+id/btn_plus"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="计算"/></LinearLayout>

6，结果

DEMO:http://download.csdn.net/detail/richiezhu/9445103