HelloWorldActivity.java

public class HelloWorldActivity 
        extends TiActivity<HelloWorldPresenter, HelloWorldView> 
        implements HelloWorldView {

    private TextView mOutput;

    @NonNull
    @Override
    public HelloWorldPresenter providePresenter() {
        return new HelloWorldPresenter();
    }

    @Override
    public void showText(final String text) {
        mOutput.setText(text);
    }

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

        mOutput = (TextView) findViewById(R.id.output);
    }
}

HelloWorldPresenter.java

public class HelloWorldPresenter extends TiPresenter<HelloWorldView> {

    @Override
    protected void onAttachView(final HelloWorldView view) {
        super.onAttachView();
        view.showText("Hello World!");
    }
}

HelloWorldView.java

public interface HelloWorldView extends TiView {

    @CallOnMainThread
    void showText(final String text);
}