Creating Remote Service via AIDL

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Describe your service access interface through .aidl file:

// IRemoteService.aidl
package com.example.android;

// Declare any non-default types here with import statements

/** Example service interface */
interface IRemoteService {
    /** Request the process ID of this service, to do evil things with it. */
    int getPid();
}

Now after build application, sdk tools will generate appropriate .java file. This file will contain Stub class which implements our aidl interface, and which we need to extend:

public class RemoteService extends Service {

    private final IRemoteService.Stub binder = new IRemoteService.Stub() {
        @Override
        public int getPid() throws RemoteException {
            return Process.myPid();
        }
    };

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return binder;
    }
}

Then in activity:

public class MainActivity extends AppCompatActivity {
    private final ServiceConnection connection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
            IRemoteService service = IRemoteService.Stub.asInterface(iBinder);
            Toast.makeText(this, "Activity process: " + Process.myPid + ", Service process: " + getRemotePid(service), LENGTH_SHORT).show();
        }

        @Override
        public void onServiceDisconnected(ComponentName componentName) {}
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    protected void onStart() {
        super.onStart();
        Intent intent = new Intent(this, RemoteService.class);
        bindService(intent, connection, Context.BIND_AUTO_CREATE);
    }

    @Override
    protected void onStop() {
        super.onStop();
        unbindService(connection);
    }

    private int getRemotePid(IRemoteService service) {
        int result = -1;

        try {
            result = service.getPid();
        } catch (RemoteException e) {
            e.printStackTrace();
        }

        return result;
    }
}

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* Creating Remote Service via AIDL

Table Of Contents
2 Gradle
5 Intent
17 Service
19 WebView
31 SQLite
35 Glide
37 Dialog
38 ACRA
44 Handler
53 Toast
63 Menu
65 Picasso
70 Volley
71 Widgets
78 Realm
90 Spinner
95 OkHttp
108 TextView
109 ListView
111 Loader
118 Xposed
119 Security
121 ImageView
123 Doze Mode
130 Drawables
131 Colors
134 Fresco
139 AdMob
145 Keyboard
146 Button
150 EditText
155 Vk SDK
163 ExoPlayer
169 XMPP
175 OpenCV
177 Threads
184 ORMLite
186 TabLayout
190 LruCache
192 Zip files
194 Fastlane
199 FileIO
202 Moshi
210 VideoView
216 Paint
218 ProGuard
226 CleverTap
228 ADB shell
229 Ping ICMP
230 AIDL
234 Context
240 JCodec
242 Okio
249 FuseView
254 Looper
261 Fastjson
263 Jackson
267 Smartcard