Understand resource folders :
i. Create spinner with strings taken from resource folder.
ii. On changing spinner value, change image.


MainActivity.java

package com.example.assignment6;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.Spinner;

public class MainActivity extends AppCompatActivity {

    private Spinner spinner;

    private ImageView image;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        spinner=findViewById(R.id.spinner);

        image=findViewById(R.id.image);

        String[] animals={"Select One","Hawk and Dove","Wonder Woman","Beast Boy","Starfire"};

        ArrayAdapter<String>adapter=new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item,animals);

        spinner.setAdapter(adapter);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

            @Override

            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

                switch (position){

                    case  1:

                        image.setImageResource(R.drawable.hawkanddove);

                        break;

                    case 2:

                        image.setImageResource(R.drawable.wonderwoman);

                        break;

                    case 3:

                        image.setImageResource(R.drawable.beastboy);

                        break;

                    case 4:

                        image.setImageResource(R.drawable.starfire);

                }

            }

            @Override

            public void onNothingSelected(AdapterView<?> parent) {

            }

        });

    }

}

activity_main.xml

<?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="408dp"

        android:layout_height="40dp"

        android:layout_marginStart="1dp"

        android:layout_marginLeft="1dp"

        android:layout_marginTop="181dp"

        android:layout_marginEnd="1dp"

        android:layout_marginRight="1dp"

        android:layout_marginBottom="168dp"

        app:layout_constraintBottom_toTopOf="@+id/image"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.0"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent"

        app:layout_constraintVertical_bias="0.721" />

    <ImageView

        android:id="@+id/image"

        android:layout_width="481dp"

        android:layout_height="307dp"

        android:layout_marginStart="16dp"

        android:layout_marginLeft="16dp"

        android:layout_marginBottom="164dp"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.593"

        app:layout_constraintStart_toStartOf="parent" />

    <androidx.constraintlayout.widget.Guideline

        android:id="@+id/guideline"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="horizontal"

        app:layout_constraintGuide_begin="105dp" />

</androidx.constraintlayout.widget.ConstraintLayout>




Output

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