RadioButton Inside ListView Example In Android Studio

Here is the example of using RadioButton Inside ListView. In this example we create a list of Questions with two options yes or no. For providing these options we use Radio Buttons with Radio Group inside our list item. Firstly we create an String array for questions and then set an adapter to fill the data in the ListView. In this example we also display a Submit button and perform setOnClickListener event on Button so whenever a user click on this Button the selected answers of questions is displayed by using a Toast.

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If you are new here then first read our RadioButton tutorial and ListView tutorial.

Step 1: Create a new project and name it RadioButtonInsideListView.

Step 2: Open res -> layout ->activity_main.xml (or) main.xml and add following code:

In this step we open xml file and add code for displaying ListView.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- ListView and Submit Button-->
<ListView
android:id="@+id/simpleListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/submit"
android:divider="@color/material_blue_grey_800"
android:dividerHeight="1dp"
android:footerDividersEnabled="false" />

<Button
android:id="@+id/submit"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_margin="20dp"
android:background="#0f0"
android:text="Submit"
android:textColor="#fff"
android:textSize="20sp" />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- ListView and Submit Button-->
<ListView
android:id="@+id/simpleListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/submit"
android:divider="@color/material_blue_grey_800"
android:dividerHeight="1dp"
android:footerDividersEnabled="false" />

<Button
android:id="@+id/submit"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_margin="20dp"
android:background="#0f0"
android:text="Submit"
android:textColor="#fff"
android:textSize="20sp" />
</RelativeLayout>

Step 3: Create a new xml file i.e list_items.xml inside layout and add the below code:In this step we create a new xml file and add the code for displaying a TextView and RadioButton’s.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!-- TextView for displaying question-->
<TextView
android:id="@+id/question"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="@dimen/activity_horizontal_margin"
android:textColor="#000" />
<!-- RadioGroup for grouping of RadioButton-->
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="horizontal"
android:weightSum="2">

<RadioButton
android:id="@+id/yes"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_weight="1"
android:text="Yes"
android:textColor="#000" />

<RadioButton
android:id="@+id/no"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_weight="1"
android:text="No"
android:textColor="#000" />
</RadioGroup>
</LinearLayout>

Step 4: Open   src -> package -> MainActivity.java

In this step Firstly we get the reference of Button and ListView. After that we create an String array for questions and then set an adapter to fill the data in the ListView. Finally we perform setOnClickListener event on Button so whenever a user click on Button the selected answers of questions is displayed by using a Toast.

package com.abhiandroid.radiobuttoninsidelistviewexample;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

ListView simpleList;
String[] questions;
Button submit;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the string array from string.xml file
questions = getResources().getStringArray(R.array.questions);
// get the reference of ListView and Button
simpleList = (ListView) findViewById(R.id.simpleListView);
submit = (Button) findViewById(R.id.submit);
// set the adapter to fill the data in the ListView
CustomAdapter customAdapter = new CustomAdapter(getApplicationContext(), questions);
simpleList.setAdapter(customAdapter);
// perform setOnClickListerner event on Button
submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String message = "";
// get the value of selected answers from custom adapter
for (int i = 0; i < CustomAdapter.selectedAnswers.size(); i++) {
message = message + "\n" + (i + 1) + " " + CustomAdapter.selectedAnswers.get(i);
}
// display the message on screen with the help of Toast.
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}

Step 5: Create a new class CustomAdapter.java inside package and add the following code

In this step we create a custom adapter class and extends BaseAdapter in this class. In this step we firstly set the data in the list and then perform setOnCheckedChangeListener event on RadioButton.

package com.abhiandroid.radiobuttoninsidelistviewexample;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.TextView;

import java.util.ArrayList;


public class CustomAdapter extends BaseAdapter {
Context context;
String[] questionsList;
LayoutInflater inflter;
public static ArrayList<String> selectedAnswers;

public CustomAdapter(Context applicationContext, String[] questionsList) {
this.context = context;
this.questionsList = questionsList;
// initialize arraylist and add static string for all the questions
selectedAnswers = new ArrayList<>();
for (int i = 0; i < questionsList.length; i++) {
selectedAnswers.add("Not Attempted");
}
inflter = (LayoutInflater.from(applicationContext));
}

@Override
public int getCount() {
return questionsList.length;
}

@Override
public Object getItem(int i) {
return null;
}

@Override
public long getItemId(int i) {
return 0;
}

@Override
public View getView(final int i, View view, ViewGroup viewGroup) {
view = inflter.inflate(R.layout.list_items, null);
// get the reference of TextView and Button's
TextView question = (TextView) view.findViewById(R.id.question);
RadioButton yes = (RadioButton) view.findViewById(R.id.yes);
RadioButton no = (RadioButton) view.findViewById(R.id.no);
// perform setOnCheckedChangeListener event on yes button
yes.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// set Yes values in ArrayList if RadioButton is checked
if (isChecked)
selectedAnswers.set(i, "Yes");
}
});
// perform setOnCheckedChangeListener event on no button
no.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// set No values in ArrayList if RadioButton is checked
if (isChecked)
selectedAnswers.set(i, "No");

}
});
// set the value in TextView
question.setText(questionsList[i]);
return view;
}
}

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