Source Code Cara membuat RadioButton dengan Android

/* Activity_button.java */

package com.membuatradiobutton;

import android.app.Activity;

import android.os.Bundle;

import android.view.Gravity;

import android.widget.LinearLayout;

import android.widget.RadioGroup;

import android.widget.RadioGroup.OnCheckedChangeListener;

public class ButtonActivity extends  Activity implements

      RadioGroup.OnCheckedChangeListener {

      /** Pemanggilan activity pertama */

            RadioGroup orientation; RadioGroup gravity;

     

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_button);

            orientation = (RadioGroup)

            findViewById(R.id.orientation);

                        orientation.setOnCheckedChangeListener((OnCheckedChangeListener) this);

                        RadioGroup gravity = (RadioGroup)

                        findViewById(R.id.gravity);

                        gravity.setOnCheckedChangeListener((OnCheckedChangeListener) this);

                        }

      public void onCheckedChanged(RadioGroup group, int

                  checkId) {

                  switch (checkId) {

                  case R.id.horizontal:

                  orientation.setOrientation(LinearLayout.HORIZONTAL);

                  break;

                  case R.id.vertical:

                  orientation.setOrientation(LinearLayout.VERTICAL);

                  break;

                  case R.id.kiri:

                  gravity.setGravity(Gravity.LEFT);

                  break;

                  case R.id.tengah:

                  gravity.setGravity(Gravity.CENTER);

                  break;

                  case R.id.kanan:

                  gravity.setGravity(Gravity.RIGHT);

                  break;

                  }

            }

      }

/* Button_activity.xml */

 

    

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_height="fill_parent"

    android:layout_width="fill_parent"

    android:orientation="vertical">

    <RadioGroup

        android:padding="5px"

            android:layout_height="wrap_content"

            android:layout_width="wrap_content"

            android:id="@+id/orientation"

            android:orientation="horizontal">

            <RadioButton

                android:layout_height="wrap_content"

                android:layout_width="wrap_content"

                android:id="@+id/horizontal"

                android:text="Horizontal">

             </RadioButton>

             <RadioButton

                android:layout_height="wrap_content"

                android:layout_width="wrap_content"

                android:id="@+id/vertical"

                android:text="Vertical">

             </RadioButton>

             </RadioGroup>

             <RadioGroup

                 android:id="@+id/gravity"

                 android:orientation="vertical"

                 android:padding="5px"

                 android:layout_width="fill_parent"

                 android:layout_height="wrap_content">

                 <RadioButton

                     android:id="@+id/kanan"

                     android:text="Kanan">

                  </RadioButton>

                  <RadioButton

                     android:text="Kiri"

                     android:id="@+id/kiri">

                  </RadioButton>

                  <RadioButton

                     android:id="@+id/tengah"

                     android:text="Tengah">

                     </RadioButton>

            </RadioGroup>

</LinearLayout>