RADIO BUTTON IMAGE

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="com.example.emt00.myapplication.MainActivity">


    <Button
        android:id="@+id/button1"
        android:layout_width="371dp"
        android:layout_height="86dp"
        android:text="DISPLAY IMAGE"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="18dp" />

    <RadioGroup
        android:id="@+id/radioGroup1"
        android:layout_width="368dp"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:layout_editor_absoluteX="0dp"
        tools:layout_editor_absoluteY="111dp"
        android:layout_below="@+id/button1"
        android:layout_alignParentStart="true"
        android:layout_marginTop="25dp">

        <RadioButton
            android:id="@+id/radio0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="OnClickListener"
            android:text="2.3.3" />

        <RadioButton
            android:id="@+id/radio1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="OnClickListener"
            android:text="4.1" />
        <RadioButton
            android:id="@+id/radio2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="OnClickListener"
            android:text="4.4" />
    </RadioGroup>

    <ImageView
            android:id="@+id/imageView"
            android:layout_width="185dp"
            android:layout_height="127dp"
        android:layout_below="@+id/radioGroup1"
        android:layout_alignParentStart="true"
        android:layout_marginStart="15dp"
        android:layout_marginTop="20dp" />




</RelativeLayout>

/////////////////////////////////////////////

package com.example.emt00.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.RadioGroup;


public class MainActivity extends AppCompatActivity {
    RadioGroup group;
    RadioButton button1, button2, button3;
    Button button;
    ImageView image;

    View.OnClickListener radio_listener = new View.OnClickListener() {

        public void onClick(View arg0) {
            switch (group.getCheckedRadioButtonId()) {
                case R.id.radio0:
                    image.setImageResource(R.drawable.if_android_381383);
                    break;
                case R.id.radio1:
                    image.setImageResource(R.drawable.if_android_1220337);
                    break;
                case R.id.radio2:
                    image.setImageResource(R.drawable.if_android_1220385);
                    break;
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("Survey");

        group = (RadioGroup) findViewById(R.id.radioGroup1);
        button1 = (RadioButton) findViewById(R.id.radio0);
        button2= (RadioButton) findViewById(R.id.radio1);
        button3= (RadioButton) findViewById(R.id.radio2);

        button1.setOnClickListener(radio_listener);
        button2.setOnClickListener(radio_listener);
        button3.setOnClickListener(radio_listener);
        button = (Button) findViewById(R.id.button1);
        image = (ImageView) findViewById(R.id.imageView);
        }
    }
//