1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.widget; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.accessibility.AccessibilityEvent; 22 import android.view.accessibility.AccessibilityNodeInfo; 23 24 25 /** 26 * <p> 27 * A checkbox is a specific type of two-states button that can be either 28 * checked or unchecked. A example usage of a checkbox inside your activity 29 * would be the following: 30 * </p> 31 * 32 * <pre class="prettyprint"> 33 * public class MyActivity extends Activity { 34 * protected void onCreate(Bundle icicle) { 35 * super.onCreate(icicle); 36 * 37 * setContentView(R.layout.content_layout_id); 38 * 39 * final CheckBox checkBox = (CheckBox) findViewById(R.id.checkbox_id); 40 * if (checkBox.isChecked()) { 41 * checkBox.setChecked(false); 42 * } 43 * } 44 * } 45 * </pre> 46 * 47 * <p>See the <a href="{@docRoot}guide/topics/ui/controls/checkbox.html">Checkboxes</a> 48 * guide.</p> 49 * 50 * <p><strong>XML attributes</strong></p> 51 * <p> 52 * See {@link android.R.styleable#CompoundButton CompoundButton Attributes}, 53 * {@link android.R.styleable#Button Button Attributes}, 54 * {@link android.R.styleable#TextView TextView Attributes}, 55 * {@link android.R.styleable#View View Attributes} 56 * </p> 57 */ 58 public class CheckBox extends CompoundButton { CheckBox(Context context)59 public CheckBox(Context context) { 60 this(context, null); 61 } 62 CheckBox(Context context, AttributeSet attrs)63 public CheckBox(Context context, AttributeSet attrs) { 64 this(context, attrs, com.android.internal.R.attr.checkboxStyle); 65 } 66 CheckBox(Context context, AttributeSet attrs, int defStyleAttr)67 public CheckBox(Context context, AttributeSet attrs, int defStyleAttr) { 68 this(context, attrs, defStyleAttr, 0); 69 } 70 CheckBox(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)71 public CheckBox(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 72 super(context, attrs, defStyleAttr, defStyleRes); 73 } 74 75 @Override onInitializeAccessibilityEvent(AccessibilityEvent event)76 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 77 super.onInitializeAccessibilityEvent(event); 78 event.setClassName(CheckBox.class.getName()); 79 } 80 81 @Override onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)82 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 83 super.onInitializeAccessibilityNodeInfo(info); 84 info.setClassName(CheckBox.class.getName()); 85 } 86 } 87