Android Local Service Sample, bindservice(), and ServiceConnection()

Question

I have a question which is related to this question that was asked by @mnish about a year ago.

Please have a look at his question and code. He implements a ServiceCo

Answer 1

Here you are, my example .. will make you clear about that LOL

// My MyServiceInterface.aidl
package com.mad.exam;

interface MyServiceInterface {
     int getNumber();
}

//MyService 
public class MyService extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        Toast.makeText(this, "Service OnBind()", Toast.LENGTH_LONG).show();
        return mBinder;
    }

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();
        Toast.makeText(this, "Service Created", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Toast.makeText(this, "Service Destroyed ", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onStart(Intent intent, int startId) {
        // TODO Auto-generated method stub
        super.onStart(intent, startId);
        Toast.makeText(this, "Service Started ", Toast.LENGTH_SHORT).show();
    }

    @Override
    public boolean onUnbind(Intent intent) {
        // TODO Auto-generated method stub
        return super.onUnbind(intent);
    }

    private final MyServiceInterface.Stub mBinder = new MyServiceInterface.Stub() {
        public int getNumber() {
            return new Random().nextInt(100);
        }
    };
}

//My Activity 
public class ServiceDemo extends Activity implements OnClickListener {
    MyServiceInterface mService;
    ServiceConnection mConnection;
    Button retreive;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.service);
        retreive = (Button) findViewById(R.id.retreive);
        retreive.setOnClickListener(this);

        mConnection = new ServiceConnection() {

            public void onServiceDisconnected(ComponentName name) {
                // TODO Auto-generated method stub
            }

            public void onServiceConnected(ComponentName name, IBinder service) {
                // TODO Auto-generated method stub
                mService = MyServiceInterface.Stub.asInterface(service);

                try {
                    int i;
                    i = mService.getNumber();
                    Toast.makeText(ServiceDemo.this, "The service value is: " + String.valueOf(i), Toast.LENGTH_SHORT).show();
                } catch (RemoteException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        };
    }

    public void onClick(View v) {
        // TODO Auto-generated method stub
        Log.i("My Tag", "Clicked");
        Button btn = (Button) v;
        Intent callService = new Intent(this, MyService.class);
        bindService(callService, mConnection, Context.BIND_AUTO_CREATE);
    }

    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Intent callService = new Intent(this, MyService.class);
        bindService(callService, mConnection, Context.BIND_AUTO_CREATE);
    }
}