How to get RadioGroup selected Radio Button text in Android

In this android programming source code example, we are going to get RadioGroup selected Radio Button text in Android.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to get RadioGroup selected Radio Button text in Android.

activity_main.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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="10dp"
    android:orientation="vertical"
    tools:context=".radiobutton.RadioButton13">

    <TextView
        android:id="@+id/textView25"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Get RadioGroup Selected RadioButton" />

    <RadioGroup
        android:id="@+id/radio"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:divider="?android:attr/dividerHorizontal"
        android:showDividers="middle">

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="RadioButton1" />

        <RadioButton
            android:id="@+id/radioButton2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="RadioButton2" />

        <RadioButton
            android:id="@+id/radioButton3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="RadioButton3" />


        <RadioButton
            android:id="@+id/radioButton4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="RadioButton4" />

    </RadioGroup>

    <TextView
        android:background="@color/colorAccent"
        android:textSize="20sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/index"/>

</LinearLayout>

MainActivity.java

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

public class RadioButton16 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_radio_button16);

        final TextView textView = findViewById(R.id.index);

        final RadioGroup radioGroup = findViewById(R.id.radio);
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                int checkedRadio = radioGroup.getCheckedRadioButtonId();
                RadioButton checkedRadioButton = findViewById(checkedRadio);
                String checkedBox = checkedRadioButton.getText().toString();
                textView.setText(checkedBox);
            }
        });

    }
}