alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Android example source code file (RadioButton.java)

This example Android source code file (RadioButton.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, attributeset, compoundbutton, content, override, radiobutton, util, utilities, utils

The RadioButton.java Android example source code

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget;

import android.content.Context;
import android.util.AttributeSet;


/**
 * <p>
 * A radio button is a two-states button that can be either checked or
 * unchecked. When the radio button is unchecked, the user can press or click it
 * to check it. However, contrary to a {@link android.widget.CheckBox}, a radio
 * button cannot be unchecked by the user once checked.
 * </p>
 *
 * <p>
 * Radio buttons are normally used together in a
 * {@link android.widget.RadioGroup}. When several radio buttons live inside
 * a radio group, checking one radio button unchecks all the others.</p>
 * </p>
 *
 * <p>XML attributes

* <p> * See {@link android.R.styleable#CompoundButton CompoundButton Attributes}, * {@link android.R.styleable#Button Button Attributes}, * {@link android.R.styleable#TextView TextView Attributes}, * {@link android.R.styleable#View View Attributes} * </p> */ public class RadioButton extends CompoundButton { public RadioButton(Context context) { this(context, null); } public RadioButton(Context context, AttributeSet attrs) { this(context, attrs, com.android.internal.R.attr.radioButtonStyle); } public RadioButton(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } /** * {@inheritDoc} * <p> * If the radio button is already checked, this method will not toggle the radio button. */ @Override public void toggle() { // we override to prevent toggle when the radio is already // checked (as opposed to check boxes widgets) if (!isChecked()) { super.toggle(); } } }

Other Android examples (source code examples)

Here is a short list of links related to this Android RadioButton.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.