1 /* 2 * Copyright (C) 2017 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 com.android.settings.widget; 18 19 import android.content.Context; 20 import android.support.v4.content.res.TypedArrayUtils; 21 import android.support.v7.preference.CheckBoxPreference; 22 import android.support.v7.preference.PreferenceViewHolder; 23 import android.util.AttributeSet; 24 import android.widget.TextView; 25 26 import com.android.settings.R; 27 28 /** 29 * Check box preference with check box replaced by radio button. 30 * 31 * Functionally speaking, it's actually a CheckBoxPreference. We only modified 32 * the widget to RadioButton to make it "look like" a RadioButtonPreference. 33 * 34 * In other words, there's no "RadioButtonPreferenceGroup" in this 35 * implementation. When you check one RadioButtonPreference, if you want to 36 * uncheck all the other preferences, you should do that by code yourself. 37 */ 38 public class RadioButtonPreference extends CheckBoxPreference { 39 public interface OnClickListener { onRadioButtonClicked(RadioButtonPreference emiter)40 void onRadioButtonClicked(RadioButtonPreference emiter); 41 } 42 43 private OnClickListener mListener = null; 44 RadioButtonPreference(Context context, AttributeSet attrs, int defStyle)45 public RadioButtonPreference(Context context, AttributeSet attrs, int defStyle) { 46 super(context, attrs, defStyle); 47 setWidgetLayoutResource(R.layout.preference_widget_radiobutton); 48 } 49 RadioButtonPreference(Context context, AttributeSet attrs)50 public RadioButtonPreference(Context context, AttributeSet attrs) { 51 this(context, attrs, TypedArrayUtils.getAttr(context, 52 android.support.v7.preference.R.attr.preferenceStyle, 53 android.R.attr.preferenceStyle)); 54 } 55 RadioButtonPreference(Context context)56 public RadioButtonPreference(Context context) { 57 this(context, null); 58 } 59 setOnClickListener(OnClickListener listener)60 public void setOnClickListener(OnClickListener listener) { 61 mListener = listener; 62 } 63 64 @Override onClick()65 public void onClick() { 66 if (mListener != null) { 67 mListener.onRadioButtonClicked(this); 68 } 69 } 70 71 @Override onBindViewHolder(PreferenceViewHolder view)72 public void onBindViewHolder(PreferenceViewHolder view) { 73 super.onBindViewHolder(view); 74 75 TextView title = (TextView) view.findViewById(android.R.id.title); 76 if (title != null) { 77 title.setSingleLine(false); 78 title.setMaxLines(3); 79 } 80 } 81 } 82