Android Program : Design Following Screens Using RadioButtons & CheckBoxes. Display the selected text using Toast.

Android Program: Design Following Screens Using RadioButtons & CheckBoxes. Display the  selected text using Toast.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/tvRg"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:gravity="center"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tvRg"
        android:layout_centerHorizontal="true"
        android:orientation="horizontal"
        android:showDividers="beginning|middle|end"
        android:layout_marginTop="10dp"
        android:id="@+id/radioGroup" >


        <RadioButton
            android:id="@+id/rb1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="FYBBACA"
            android:checked="false" />

        <RadioButton
            android:id="@+id/rb2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="FYBBACA"
            android:checked="true" />

        <RadioButton
            android:id="@+id/rb3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="SYBBACA"
            android:checked="false" />

        <RadioButton
            android:id="@+id/rb4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TYBBACA"
            android:checked="false" />

    </RadioGroup>
<TextView
    android:id="@+id/tvCb"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/radioGroup"
    android:gravity="center"
    android:text="Give Your Suggestions Here."
    android:layout_marginTop="65dp"
    android:textAppearance="?android:attr/textAppearanceMedium"/>

<CheckBox
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text=" CPP"
    android:id="@+id/cb1"
    android:layout_below="@+id/tvCb"
    android:layout_centerHorizontal="true"
    android:checked="false"/>

<CheckBox
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="DS"
    android:id="@+id/cb2"
    android:layout_below="@+id/cb1"
    android:layout_centerHorizontal="true"
    android:checked="false"/>

<CheckBox
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="c#"
    android:id="@+id/cb3"
    android:layout_below="@+id/cb2"
    android:layout_centerHorizontal="true"
    android:checked="false"/>

<CheckBox
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Java"
    android:id="@+id/cb4"
    android:layout_below="@+id/cb3"
    android:layout_centerHorizontal="true"
    android:checked="false"/>
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="SUBMIT"
        android:id="@+id/btnSubmit"
        android:layout_below="@+id/radioGroup"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"/>
        
</RelativeLayout>

MainActivity.java

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

public class MainActivity extends AppCompatActivity {

    // These are the global variables
    RadioGroup radioGroup;
    RadioButton selectedRadioButton;
    Button buttonSubmit;
    CheckBox cb1, cb2, cb3, cb4;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // layout instances
        buttonSubmit = (Button) findViewById(R.id.buttonSubmit);
        radioGroup = (RadioGroup) findViewById(R.id.radioGroup);
cb1 = (CheckBox) findViewById(R.id.cb1);
cb2 = (CheckBox) findViewById(R.id.cb2);
cb3 = (CheckBox) findViewById(R.id.cb3);
cb4 = (CheckBox) findViewById(R.id.cb4);
        /*
            Submit Button
        */
        buttonSubmit.setOnClickListener(new View.OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // get the selected RadioButton of the group
                selectedRadioButton  = (RadioButton)findViewById(radioGroup.getCheckedRadioButtonId());
               String checkBoxChoices = "";
    
        if (cb1.isChecked()) {
            checkBoxChoices += cb1.getText().toString() + "\tYES";
        }
        else{
            checkBoxChoices += cb1.getText().toString() + "\tNO";
        }
        
        if (cb2.isChecked()) {
            checkBoxChoices += cb2.getText().toString() + "\tYES";
        }
        else{
            checkBoxChoices += cb2.getText().toString() + "\tNO";
        }
        
        if (cb3.isChecked()) {
            checkBoxChoices += cb3.getText().toString() + "\tYES";
        }
        else{
            checkBoxChoices += cb3.getText().toString() + "\tNO";
        }
        
        if (cb4.isChecked()) {
            checkBoxChoices += cb4.getText().toString() + "\tYES";
        }
        else{
            checkBoxChoices += cb4.getText().toString() + "\tNO";
        } //get RadioButton text
                String yourVote = selectedRadioButton.getText().toString();
                // display it as Toast to the user
                Toast.makeText(MainActivity.this, "Selected Radio Button is:" + yourVote , Toast.LENGTH_LONG).show();
            }
        });
    }
}