1 /* 2 * Copyright (C) 2015 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 package android.databinding.adapters; 17 18 import android.databinding.BindingAdapter; 19 import android.databinding.InverseBindingListener; 20 import android.databinding.InverseBindingMethod; 21 import android.databinding.InverseBindingMethods; 22 import android.widget.RadioGroup; 23 import android.widget.RadioGroup.OnCheckedChangeListener; 24 25 @InverseBindingMethods({ 26 @InverseBindingMethod(type = RadioGroup.class, attribute = "android:checkedButton", method = "getCheckedRadioButtonId"), 27 }) 28 public class RadioGroupBindingAdapter { 29 @BindingAdapter("android:checkedButton") 30 public static void setCheckedButton(RadioGroup view, int id) { 31 if (id != view.getCheckedRadioButtonId()) { 32 view.check(id); 33 } 34 } 35 36 @BindingAdapter(value = {"android:onCheckedChanged", "android:checkedButtonAttrChanged"}, 37 requireAll = false) 38 public static void setListeners(RadioGroup view, final OnCheckedChangeListener listener, 39 final InverseBindingListener attrChange) { 40 if (attrChange == null) { 41 view.setOnCheckedChangeListener(listener); 42 } else { 43 view.setOnCheckedChangeListener(new OnCheckedChangeListener() { 44 @Override 45 public void onCheckedChanged(RadioGroup group, int checkedId) { 46 if (listener != null) { 47 listener.onCheckedChanged(group, checkedId); 48 } 49 50 attrChange.onChange(); 51 } 52 }); 53 } 54 } 55 } 56
