RadioGroup.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087
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 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This class is used to create a multiple-exclusion scope for a set of radio 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * buttons. Checking one radio button that belongs to a radio group unchecks 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * any previously checked radio button within the same group.</p> 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Intially, all of the radio buttons are unchecked. While it is not possible 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to uncheck a particular radio button, the radio group can be cleared to 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remove the checked state.</p> 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>The selection is identified by the unique id of the radio button as defined 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in the XML layout file.</p> 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p><strong>XML Attributes</strong></p> 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>See {@link android.R.styleable#RadioGroup RadioGroup Attributes}, 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#LinearLayout LinearLayout Attributes}, 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#ViewGroup ViewGroup Attributes}, 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#View View Attributes}</p> 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Also see 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams} 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes.</p> 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see RadioButton 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class RadioGroup extends LinearLayout { 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // holds the checked id; the selection is empty by default 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mCheckedId = -1; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // tracks children radio buttons checked state 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener; 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // when true, mOnCheckedChangeListener discards events 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mProtectFromCheckedChange = false; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private OnCheckedChangeListener mOnCheckedChangeListener; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PassThroughHierarchyChangeListener mPassThroughListener; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RadioGroup(Context context) { 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(VERTICAL); 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project init(); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RadioGroup(Context context, AttributeSet attrs) { 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs); 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // retrieve selected radio button as requested by the user in the 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // XML layout file 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray attributes = context.obtainStyledAttributes( 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project attrs, com.android.internal.R.styleable.RadioGroup, com.android.internal.R.attr.radioButtonStyle, 0); 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int value = attributes.getResourceId(R.styleable.RadioGroup_checkedButton, View.NO_ID); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (value != View.NO_ID) { 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckedId = value; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = attributes.getInt(com.android.internal.R.styleable.RadioGroup_orientation, VERTICAL); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project attributes.recycle(); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project init(); 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void init() { 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mChildOnCheckedChangeListener = new CheckedStateTracker(); 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPassThroughListener = new PassThroughHierarchyChangeListener(); 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setOnHierarchyChangeListener(mPassThroughListener); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnHierarchyChangeListener(OnHierarchyChangeListener listener) { 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user listener is delegated to our pass-through listener 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPassThroughListener.mOnHierarchyChangeListener = listener; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFinishInflate() { 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFinishInflate(); 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // checks the appropriate radio button as requested in the XML file 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = true; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, true); 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = false; 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(mCheckedId); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addView(View child, int index, ViewGroup.LayoutParams params) { 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child instanceof RadioButton) { 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final RadioButton button = (RadioButton) child; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (button.isChecked()) { 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = true; 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, false); 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = false; 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(button.getId()); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.addView(child, index, params); 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Sets the selection to the radio button whose identifier is passed in 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * parameter. Using -1 as the selection identifier clears the selection; 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * such an operation is equivalent to invoking {@link #clearCheck()}.</p> 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id the unique id of the radio button to select in this group 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getCheckedRadioButtonId() 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #clearCheck() 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void check(int id) { 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // don't even bother 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id != -1 && (id == mCheckedId)) { 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, false); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id != -1) { 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(id, true); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(id); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setCheckedId(int id) { 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckedId = id; 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnCheckedChangeListener != null) { 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnCheckedChangeListener.onCheckedChanged(this, mCheckedId); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setCheckedStateForView(int viewId, boolean checked) { 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View checkedView = findViewById(viewId); 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (checkedView != null && checkedView instanceof RadioButton) { 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((RadioButton) checkedView).setChecked(checked); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the identifier of the selected radio button in this group. 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Upon empty selection, the returned value is -1.</p> 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the unique id of the selected radio button in this group 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #check(int) 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #clearCheck() 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getCheckedRadioButtonId() { 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCheckedId; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Clears the selection. When the selection is cleared, no radio button 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in this group is selected and {@link #getCheckedRadioButtonId()} returns 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * null.</p> 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #check(int) 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getCheckedRadioButtonId() 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void clearCheck() { 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project check(-1); 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Register a callback to be invoked when the checked radio button 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * changes in this group.</p> 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener the callback to call on checked state change 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnCheckedChangeListener(OnCheckedChangeListener listener) { 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnCheckedChangeListener = listener; 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new RadioGroup.LayoutParams(getContext(), attrs); 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof RadioGroup.LayoutParams; 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LinearLayout.LayoutParams generateDefaultLayoutParams() { 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This set of layout parameters defaults the width and the height of 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the children to {@link #WRAP_CONTENT} when they are not specified in the 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * XML file. Otherwise, this class ussed the value read from the XML file.</p> 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>See 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.styleable#LinearLayout_Layout LinearLayout Attributes} 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for a list of all child view attributes that this class supports.</p> 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends LinearLayout.LayoutParams { 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int w, int h) { 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(w, h); 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int w, int h, float initWeight) { 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(w, h, initWeight); 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(MarginLayoutParams source) { 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Fixes the child's width to 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} and the child's 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * height to {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when not specified in the XML file.</p> 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param a the styled attributes set 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthAttr the width attribute to fetch 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightAttr the height attribute to fetch 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void setBaseAttributes(TypedArray a, 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthAttr, int heightAttr) { 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (a.hasValue(widthAttr)) { 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project width = a.getLayoutDimension(widthAttr, "layout_width"); 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project width = WRAP_CONTENT; 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (a.hasValue(heightAttr)) { 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height = a.getLayoutDimension(heightAttr, "layout_height"); 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height = WRAP_CONTENT; 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Interface definition for a callback to be invoked when the checked 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * radio button changed in this group.</p> 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnCheckedChangeListener { 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Called when the checked radio button has changed. When the 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection is cleared, checkedId is -1.</p> 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param group the group in which the checked radio button has changed 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param checkedId the unique identifier of the newly checked radio button 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onCheckedChanged(RadioGroup group, int checkedId); 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener { 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // prevents from infinite recursion 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mProtectFromCheckedChange) { 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = true; 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckedId != -1) { 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedStateForView(mCheckedId, false); 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProtectFromCheckedChange = false; 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int id = buttonView.getId(); 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCheckedId(id); 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>A pass-through listener acts upon the events and dispatches them 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to another listener. This allows the table layout to set its own internal 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * hierarchy change listener without preventing the user to setup his.</p> 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class PassThroughHierarchyChangeListener implements 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.OnHierarchyChangeListener { 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener; 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onChildViewAdded(View parent, View child) { 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (parent == RadioGroup.this && child instanceof RadioButton) { 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int id = child.getId(); 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // generates an id if it's missing 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id == View.NO_ID) { 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project id = child.hashCode(); 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setId(id); 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((RadioButton) child).setOnCheckedChangeWidgetListener( 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mChildOnCheckedChangeListener); 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnHierarchyChangeListener != null) { 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnHierarchyChangeListener.onChildViewAdded(parent, child); 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onChildViewRemoved(View parent, View child) { 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (parent == RadioGroup.this && child instanceof RadioButton) { 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((RadioButton) child).setOnCheckedChangeWidgetListener(null); 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnHierarchyChangeListener != null) { 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnHierarchyChangeListener.onChildViewRemoved(parent, child); 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 389