Spinner 5 cities

71

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="16dp" tools:context=".MainActivity">

<Spinner
    android:id="@+id/spinnerCities"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="16dp"
    android:entries="@array/city_names"
    android:prompt="@string/select_city"
    android:gravity="center"/>

<Button
    android:id="@+id/btnShowSelectedCity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/spinnerCities"
    android:layout_marginTop="16dp"
    android:text="Show Selected City"
    android:onClick="showSelectedCity" />

<TextView
    android:id="@+id/tvSelectedCity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/btnShowSelectedCity"
    android:layout_marginTop="16dp"
    android:text="Selected City: " />
</RelativeLayout>

package com.example.spinner;

import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {

private TextView tvSelectedCity;

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

    tvSelectedCity = findViewById(R.id.tvSelectedCity);

    Spinner spinnerCities = findViewById(R.id.spinnerCities);
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
            R.array.city_names, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinnerCities.setAdapter(adapter);
    spinnerCities.setOnItemSelectedListener(this);
}

public void showSelectedCity(View view) {
    String selectedCity = tvSelectedCity.getText().toString();
    if (!selectedCity.isEmpty()) {
        Toast.makeText(this, "Selected City: " + selectedCity, Toast.LENGTH_SHORT).show();
    } else {
        Toast.makeText(this, "Please select a city", Toast.LENGTH_SHORT).show();
    }
}

@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
    String selectedCity = parent.getItemAtPosition(position).toString();
    tvSelectedCity.setText(selectedCity);
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
    // Do nothing
}

}

<resources> <string name="app_name">Spinner</string> <string-array name="city_names"> <item>New York</item> <item>London</item> <item>Paris</item> <item>Tokyo</item> <item>Sydney</item> </string-array> 
<string name="select_city">Select a city</string>
</resources>