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Android Testing in Android Unit Testing Viewing the Presenter

Can anyone help me with this android code challenge?

I've rewatched the video multiple times, but i haven't been able to get passed this. if anyone can point me to where i can find the answer i am looking for or give me the answer, that'd be great.

MainActivity.java
public class MainActivity extends AppCompatActivity {
    TextView counter;
    Button button;

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

        counter = (TextView) findViewById(R.id.textView);
        button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int count = Integer.parseInt(counter.getText().toString());
                counter.setText(Integer.toString(count + 1));
            }
        });
    }
}
MainActivityView.java
public interface MainActivityView {

}
MainActivityPresenter.java
public class MainActivityPresenter {

}