AIDL call Guide

AIDL call Guide

Recently, there is a need to implement communication between two apks. I want to use AIDL. Now I want to write a demo to learn how to use AIDL.
Here I want to implement an apk (client Side) to call another apk (server side) method.

First, implement the server. The code structure is as follows:

The content of the AIDL file is as follows:

package com.example.testaidl;interface MyInterface {    void testMethod();}

MainActivity. java

package com.example.testaidlserver;import android.app.Activity;import android.content.Intent;import android.os.Bundle;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);startService(new Intent(this, MyService.class));}}

MyService. java

package com.example.testaidlserver;import com.example.testaidl.MyInterface;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 {@Overridepublic IBinder onBind(Intent intent) {Log.i("MyService", "service onBind....");return new ImplAIDLService();}private class ImplAIDLService extends MyInterface.Stub {@Overridepublic void testMethod() throws RemoteException {Log.i("MyService", "testMode invoked");}}}

Add MyService registration in Manifest

<service  android:name="com.example.testaidlserver.MyService">     <intent-filter>           <action android:name="com.example.testaidlserver.MyService"/>           <category android:name="android.intent.category.DEFAULT"/>     </intent-filter></service>

Below is the Client side

The aidl file and server must be the same

package com.example.testaidl;interface MyInterface {    void testMethod();}

The MainAcitvity function is to bind the server service and call the server method.

package com.example.testaidlclient;import com.example.testaidl.MyInterface;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;public class MainActivity extends Activity implements OnClickListener {private boolean mIsBinded = false;private MyInterface mInterface;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button btn_bind = (Button)findViewById(R.id.btn_bind);btn_bind.setOnClickListener(this);Button btn_invoke = (Button)findViewById(R.id.btn_invoke);btn_invoke.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch(v.getId()) {case R.id.btn_bind:if(mIsBinded) {unbindService(con);}else {bindService(new Intent("com.example.testaidlserver.MyService"), con, Context.BIND_AUTO_CREATE);}break;case R.id.btn_invoke:try {mInterface.testMethod();} catch (RemoteException e) {e.printStackTrace();}break;}}ServiceConnection con = new ServiceConnection() {@Overridepublic void onServiceDisconnected(ComponentName name) {mIsBinded = false;mInterface = null;}@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {mIsBinded = true;mInterface = MyInterface.Stub.asInterface(service);}};}

Running result: