Using listview in android

Question

I am making an android application that needs to use a ListView. I want to add a menubutton that says \"Add to list\" and once the user presses that menubutton,

Answer 1

MainActivity.java

      com.jtech.listviewapp;
      import androidx.appcompat.app.AppCompatActivity;

      import android.os.Bundle;
      import android.widget.ArrayAdapter;
      import android.widget.ListView;

      public class MainActivity extends AppCompatActivity {
        ListView listView;

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

        listView = (ListView) findViewById(R.id.lv);
        String days[] = {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
        ArrayAdapter arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1,days);
        listView.setAdapter(arrayAdapter);
    }
}