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Start your free trialprincess mudyahoto
18,502 Pointstesting in android
Challenge Task 1 of 1
Here's a simple counter app consisting of only a TextView and a Button. When the Button is pressed the counter (TextView) increases by one.
Refactor this to now use a View and Presenter.
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));
}
});
}
}
public interface MainActivityView {
void changeTextViewText(String text);
}
public class MainActivityPresenter {
MainActivityView view;
public MainActivityPresenter(MainActivityPresenter view) {
this.Presenterview.(view);
} // MainActivityPresenter()
public void buttonClicked(String text) {
view.changeTextViewText(text);
} // editTextUpdated()
}
1 Answer
Seth Kroger
56,413 PointsYou still need to implement the MainActivityView
interface in MainActivity.