Android java.lang.IllegalArgumentException: Service not registered

Use mIsBound inside doBindService() and doUnbindService() instead of in the ServiceConnection instance.

ServiceConnection mConnection = new ServiceConnection() {
    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
        mBinder = (MyIBinder) service;
    }

    @Override
    public void onServiceDisconnected(ComponentName name) {
        mBinder = null;
    }
}; 

...

public void doBindService() {
    mIsBound =bindService(new Intent(this, MyService.class),
        mConnection, Context.BIND_AUTO_CREATE); 
}

public void doUnbindService() {
    if (mIsBound) {
        unbindService(mConnection);
        mIsBound = false;
    }
}

This is how it’s done in http://developer.android.com/reference/android/app/Service.html