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.text.TextUtils; 24 import android.util.AttributeSet; 25 import android.view.View; 26 import android.widget.TextView; 27 28 import com.android.settings.R; 29 30 /** 31 * Check box preference with check box replaced by radio button. 32 * 33 * Functionally speaking, it's actually a CheckBoxPreference. We only modified 34 * the widget to RadioButton to make it "look like" a RadioButtonPreference. 35 * 36 * In other words, there's no "RadioButtonPreferenceGroup" in this 37 * implementation. When you check one RadioButtonPreference, if you want to 38 * uncheck all the other preferences, you should do that by code yourself. 39 */ 40 public class RadioButtonPreference extends CheckBoxPreference { 41 public interface OnClickListener { onRadioButtonClicked(RadioButtonPreference emiter)42 void onRadioButtonClicked(RadioButtonPreference emiter); 43 } 44 45 private OnClickListener mListener = null; 46 RadioButtonPreference(Context context, AttributeSet attrs, int defStyle)47 public RadioButtonPreference(Context context, AttributeSet attrs, int defStyle) { 48 super(context, attrs, defStyle); 49 setWidgetLayoutResource(R.layout.preference_widget_radiobutton); 50 setLayoutResource(R.layout.preference_radio); 51 setIconSpaceReserved(false); 52 } 53 RadioButtonPreference(Context context, AttributeSet attrs)54 public RadioButtonPreference(Context context, AttributeSet attrs) { 55 this(context, attrs, TypedArrayUtils.getAttr(context, 56 android.support.v7.preference.R.attr.preferenceStyle, 57 android.R.attr.preferenceStyle)); 58 } 59 RadioButtonPreference(Context context)60 public RadioButtonPreference(Context context) { 61 this(context, null); 62 } 63 setOnClickListener(OnClickListener listener)64 public void setOnClickListener(OnClickListener listener) { 65 mListener = listener; 66 } 67 68 @Override onClick()69 public void onClick() { 70 if (mListener != null) { 71 mListener.onRadioButtonClicked(this); 72 } 73 } 74 75 @Override onBindViewHolder(PreferenceViewHolder view)76 public void onBindViewHolder(PreferenceViewHolder view) { 77 super.onBindViewHolder(view); 78 79 View summaryContainer = view.findViewById(R.id.summary_container); 80 if (summaryContainer != null) { 81 summaryContainer.setVisibility( 82 TextUtils.isEmpty(getSummary()) ? View.GONE : View.VISIBLE); 83 } 84 85 TextView title = (TextView) view.findViewById(android.R.id.title); 86 if (title != null) { 87 title.setSingleLine(false); 88 title.setMaxLines(3); 89 } 90 } 91 } 92