RadioGroup.java revision 7b9c912f536925ac6ec43935d6e97506851b33d6
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.widget; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport com.android.internal.R; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 217b9c912f536925ac6ec43935d6e97506851b33d6Tor Norbyeimport android.annotation.IdRes; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 278a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityEvent; 288a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityNodeInfo; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This class is used to create a multiple-exclusion scope for a set of radio 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * buttons. Checking one radio button that belongs to a radio group unchecks 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * any previously checked radio button within the same group.</p> 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Intially, all of the radio buttons are unchecked. While it is not possible 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to uncheck a particular radio button, the radio group can be cleared to 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remove the checked state.</p> 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>The selection is identified by the unique id of the radio button as defined 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in the XML layout file.</p> 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p><strong>XML Attributes</strong></p> 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>See {@link android.R.styleable#RadioGroup RadioGroup Attributes}, 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#LinearLayout LinearLayout Attributes}, 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#ViewGroup ViewGroup Attributes}, 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#View View Attributes}</p> 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Also see 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams} 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes.</p> 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see RadioButton 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class RadioGroup extends LinearLayout { 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // holds the checked id; the selection is empty by default 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mCheckedId = -1; 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // tracks children radio buttons checked state 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // when true, mOnCheckedChangeListener discards events 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mProtectFromCheckedChange = false; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private OnCheckedChangeListener mOnCheckedChangeListener; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PassThroughHierarchyChangeListener mPassThroughListener; 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RadioGroup(Context context) { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(VERTICAL); 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project init(); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RadioGroup(Context context, AttributeSet attrs) { 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs); 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // retrieve selected radio button as requested by the user in the 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // XML layout file 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray attributes = context.obtainStyledAttributes( 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project attrs, com.android.internal.R.styleable.RadioGroup, com.android.internal.R.attr.radioButtonStyle, 0); 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int value = attributes.getResourceId(R.styleable.RadioGroup_checkedButton, View.NO_ID); 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (value != View.NO_ID) { 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckedId = value; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = attributes.getInt(com.android.internal.R.styleable.RadioGroup_orientation, VERTICAL); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project attributes.recycle(); 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project init(); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void init() { 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mChildOnCheckedChangeListener = new CheckedStateTracker(); 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPassThroughListener = new PassThroughHierarchyChangeListener(); 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setOnHierarchyChangeListener(mPassThroughListener); 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnHierarchyChangeListener(OnHierarchyChangeListener listener) { 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user listener is delegated to our pass-through listener 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPassThroughListener.mOnHierarchyChangeListener = listener; 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFinishInflate() { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFinishInflate(); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // checks the appropriate radio button as requested in the XML file 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = true; 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, true); 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = false; 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(mCheckedId); 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addView(View child, int index, ViewGroup.LayoutParams params) { 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child instanceof RadioButton) { 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final RadioButton button = (RadioButton) child; 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (button.isChecked()) { 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = true; 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, false); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = false; 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(button.getId()); 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.addView(child, index, params); 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Sets the selection to the radio button whose identifier is passed in 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * parameter. Using -1 as the selection identifier clears the selection; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * such an operation is equivalent to invoking {@link #clearCheck()}.</p> 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id the unique id of the radio button to select in this group 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getCheckedRadioButtonId() 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #clearCheck() 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1557b9c912f536925ac6ec43935d6e97506851b33d6Tor Norbye public void check(@IdRes int id) { 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // don't even bother 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id != -1 && (id == mCheckedId)) { 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, false); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id != -1) { 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(id, true); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(id); 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1727b9c912f536925ac6ec43935d6e97506851b33d6Tor Norbye private void setCheckedId(@IdRes int id) { 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckedId = id; 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnCheckedChangeListener != null) { 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnCheckedChangeListener.onCheckedChanged(this, mCheckedId); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setCheckedStateForView(int viewId, boolean checked) { 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View checkedView = findViewById(viewId); 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (checkedView != null && checkedView instanceof RadioButton) { 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((RadioButton) checkedView).setChecked(checked); 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the identifier of the selected radio button in this group. 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Upon empty selection, the returned value is -1.</p> 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the unique id of the selected radio button in this group 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #check(int) 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #clearCheck() 194aac722a9c0d199c79ae8ce2dd3cce113f01c30b7Philip Milne * 195aac722a9c0d199c79ae8ce2dd3cce113f01c30b7Philip Milne * @attr ref android.R.styleable#RadioGroup_checkedButton 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1977b9c912f536925ac6ec43935d6e97506851b33d6Tor Norbye @IdRes 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getCheckedRadioButtonId() { 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCheckedId; 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Clears the selection. When the selection is cleared, no radio button 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in this group is selected and {@link #getCheckedRadioButtonId()} returns 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * null.</p> 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #check(int) 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getCheckedRadioButtonId() 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void clearCheck() { 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project check(-1); 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Register a callback to be invoked when the checked radio button 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * changes in this group.</p> 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener the callback to call on checked state change 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnCheckedChangeListener(OnCheckedChangeListener listener) { 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnCheckedChangeListener = listener; 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new RadioGroup.LayoutParams(getContext(), attrs); 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof RadioGroup.LayoutParams; 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LinearLayout.LayoutParams generateDefaultLayoutParams() { 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2458a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 246a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn public CharSequence getAccessibilityClassName() { 247a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn return RadioGroup.class.getName(); 2488a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 2498a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This set of layout parameters defaults the width and the height of 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the children to {@link #WRAP_CONTENT} when they are not specified in the 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * XML file. Otherwise, this class ussed the value read from the XML file.</p> 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>See 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#LinearLayout_Layout LinearLayout Attributes} 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for a list of all child view attributes that this class supports.</p> 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends LinearLayout.LayoutParams { 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int w, int h) { 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(w, h); 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int w, int h, float initWeight) { 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(w, h, initWeight); 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(MarginLayoutParams source) { 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 295579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke 296579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke /** 297579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * <p>Fixes the child's width to 298579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} and the child's 299579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * height to {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 300579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * when not specified in the XML file.</p> 301579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * 302579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * @param a the styled attributes set 303579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * @param widthAttr the width attribute to fetch 304579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke * @param heightAttr the height attribute to fetch 305579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke */ 306579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke @Override 307579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke protected void setBaseAttributes(TypedArray a, 308579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke int widthAttr, int heightAttr) { 309579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke 310579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke if (a.hasValue(widthAttr)) { 311579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke width = a.getLayoutDimension(widthAttr, "layout_width"); 312579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke } else { 313579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke width = WRAP_CONTENT; 314579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke } 315579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke 316579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke if (a.hasValue(heightAttr)) { 317579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke height = a.getLayoutDimension(heightAttr, "layout_height"); 318579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke } else { 319579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke height = WRAP_CONTENT; 320579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke } 321579e14016c4a972e70cd2bd0c6d89bbd7e9e941cDave Burke } 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Interface definition for a callback to be invoked when the checked 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * radio button changed in this group.</p> 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnCheckedChangeListener { 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Called when the checked radio button has changed. When the 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection is cleared, checkedId is -1.</p> 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param group the group in which the checked radio button has changed 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param checkedId the unique identifier of the newly checked radio button 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3367b9c912f536925ac6ec43935d6e97506851b33d6Tor Norbye public void onCheckedChanged(RadioGroup group, @IdRes int checkedId); 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener { 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // prevents from infinite recursion 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mProtectFromCheckedChange) { 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = true; 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, false); 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = false; 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int id = buttonView.getId(); 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(id); 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>A pass-through listener acts upon the events and dispatches them 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to another listener. This allows the table layout to set its own internal 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * hierarchy change listener without preventing the user to setup his.</p> 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class PassThroughHierarchyChangeListener implements 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.OnHierarchyChangeListener { 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener; 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onChildViewAdded(View parent, View child) { 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (parent == RadioGroup.this && child instanceof RadioButton) { 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int id = child.getId(); 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // generates an id if it's missing 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id == View.NO_ID) { 374a9108a217e039492855fbeacda2ab6c4f4a3f70aAdam Powell id = View.generateViewId(); 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setId(id); 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((RadioButton) child).setOnCheckedChangeWidgetListener( 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mChildOnCheckedChangeListener); 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnHierarchyChangeListener != null) { 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnHierarchyChangeListener.onChildViewAdded(parent, child); 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onChildViewRemoved(View parent, View child) { 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (parent == RadioGroup.this && child instanceof RadioButton) { 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((RadioButton) child).setOnCheckedChangeWidgetListener(null); 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnHierarchyChangeListener != null) { 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnHierarchyChangeListener.onChildViewRemoved(parent, child); 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 400