What am i doing wrong?

public class MainActivity extends AppCompatActivity {
    TextView counter;
    Button button;
    MainActivityPresenter presenter;

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

        presenter = new MainActivityPresenter(this);

        counter = (TextView) findViewById(R.id.textView);
        button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
              presenter.counterButtonClicked();

            }
        });
    }

              @Override
              public void increaseCounterByOne() {
                int count = Integer.parseInt(counter.getText().toString());
                counter.setText(Integer.toString(count + 1));

    }
}

public interface MainActivityView {
  public void increaseCounterByOne();
}

public class MainActivityPresenter {
  MainActivityView view;

  public MainActivityPresenter(MainActivityView view) {
    this.view = view;
  }


  public void counterButtonClicked() {
    view.increaseCounterByOne();
  }
}