import android.app.*;
import android.widget.Button;
import android.view.*;
import android.view.KeyEvent;
import android.view.inputmethod.*;
import android.text.*;

static Button aButton(S text, final Runnable action) {
  final Button b = aButton(text);
  if (action != null)
    b.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        temp holdInstance(b);
        pcallF(action);
      }
    });
  ret b;
}

static Button aButton(S text) {
  Button b = aButton();
  b.setText(text);
  ret b;
}

static Button aButton() {
  ret androidUI(func -> Button {
    new Button(androidActivity())
  });
}