Dynamic radio button demo in Android | Radio Group example in android in Java class

This is a simple tutorial for dynamic Radio button in Android. Copy paste below code and enjoy..

1)MainActivity.java

package com.manish.dynamicspinner;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;

public class MainActivity extends Activity {

 String countryName[] = { "India", "Pakistan", "China", "Nepal",
   "Bangladesh" };

 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  LinearLayout mLinearLayout = (LinearLayout) findViewById(R.id.linear1);
  for (int k = 1; k <= 20; k++) {
   //create text button
   TextView title = new TextView(this);
   title.setText("Question Number:" + k);
   title.setTextColor(Color.BLUE);
   mLinearLayout.addView(title);
   // create radio button
   final RadioButton[] rb = new RadioButton[5];
   RadioGroup rg = new RadioGroup(this);
   rg.setOrientation(RadioGroup.VERTICAL);
   for (int i = 0; i < 5; i++) {
    rb[i] = new RadioButton(this);
    rg.addView(rb[i]);
    rb[i].setText(countryName[i]);

   }
   mLinearLayout.addView(rg);
  }
 }
}

2)activity_main.xml