THIS CODE IS USED IN SAEEDISOFT YOUTUBE CHANNEL VIDEO FOR SHOWING DROP DOWN LIST IN ANDROID APP
XML FILE CODE
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Spinner
android:id="@+id/spinner"
android:layout_width="350dp"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
JAVA CODE :
package com.saeedisoft.codetesting;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
Spinner spinner;
Context mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = this;
spinner = findViewById(R.id.spinner);
loadDropDownValues();
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if (position == 0) {
Toast.makeText(mContext, "Pakistan", Toast.LENGTH_SHORT).show();
} else if (position == 1) {
Toast.makeText(mContext, "Afghanistan", Toast.LENGTH_SHORT).show();
} else if (position == 2) {
Toast.makeText(mContext, "Iran", Toast.LENGTH_SHORT).show();
} else if (position == 3) {
Toast.makeText(mContext, "India", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
private void loadDropDownValues() {
List<String> countries = new ArrayList<>();
countries.add("PAKISTAN");
countries.add("AFGHANISTAN");
countries.add("IRAN");
countries.add("INDIA");
ArrayAdapter adapter = new ArrayAdapter(mContext, android.R.layout.simple_spinner_dropdown_item, countries);
spinner.setAdapter(adapter);
}
}
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