RadioButton Example in Android

RadioButtonActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              android:id="@+id/activity_radio_button"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:paddingBottom="@dimen/activity_vertical_margin"
              android:paddingLeft="@dimen/activity_horizontal_margin"
              android:paddingRight="@dimen/activity_horizontal_margin"
              android:paddingTop="@dimen/activity_vertical_margin"
              android:orientation="vertical"
              tools:context="com.bhaumik.programmingstudy.RadioButtonActivity">

    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Select Fruits Item"
            android:textAppearance="?android:textAppearanceLarge"
            android:layout_gravity="center_horizontal"
    />
    <RadioGroup
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

        <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/apple"
                android:text="Apple"
                android:textSize="20dp"
                android:layout_gravity="center_horizontal"
                android:onClick="SelectFruit"
        />
        <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/orange"
                android:text="Orange"
                android:textSize="20dp"
                android:layout_gravity="center_horizontal"
                android:onClick="SelectFruit"
        />
        <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/cheery"
                android:text="Cheery"
                android:textSize="20dp"
                android:layout_gravity="center_horizontal"
                android:onClick="SelectFruit"
        />
    </RadioGroup>
    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="hello"
            android:id="@+id/tv_radio_result"
            android:textAppearance="?android:textAppearanceLarge"
            android:layout_gravity="center_horizontal"
            android:enabled="false"/>

</LinearLayout>

RadioButtonActivity.java

package com.bhaumik.programmingstudy;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;
import android.widget.TextView;

public class RadioButtonActivity extends AppCompatActivity {

    TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_radio_button);
        textView = (TextView)findViewById(R.id.tv_radio_result);
    }
    public void SelectFruit(View view)
    {
        boolean checked = ((RadioButton)view).isChecked();
        switch (view.getId())
        {
            case R.id.apple:
                if (checked)
                {
                    textView.setText("You Select Apple...");
                    textView.setEnabled(true);
                }
                else
                {
                    textView.setEnabled(false);
                }
                break;
            case R.id.orange:
                if (checked)
                {
                    textView.setText("You Select Orange...");
                    textView.setEnabled(true);
                }
                else
                {
                    textView.setEnabled(false);
                }
                break;
            case R.id.cheery:
                if (checked)
                {
                    textView.setText("You Select Cheery...");
                    textView.setEnabled(true);
                }
                else
                {
                    textView.setEnabled(false);
                }
                break;
        }
    }
}