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.development; 18 19 import android.content.Context; 20 import android.os.SystemProperties; 21 import android.support.annotation.VisibleForTesting; 22 import android.support.v7.preference.ListPreference; 23 import android.support.v7.preference.Preference; 24 import android.text.TextUtils; 25 26 import com.android.settings.R; 27 import com.android.settings.core.PreferenceControllerMixin; 28 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 29 30 public class BluetoothAvrcpVersionPreferenceController extends DeveloperOptionsPreferenceController 31 implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin { 32 33 private static final String BLUETOOTH_SELECT_AVRCP_VERSION_KEY = 34 "bluetooth_select_avrcp_version"; 35 36 @VisibleForTesting 37 static final String BLUETOOTH_AVRCP_VERSION_PROPERTY = "persist.bluetooth.avrcpversion"; 38 39 private final String[] mListValues; 40 private final String[] mListSummaries; 41 BluetoothAvrcpVersionPreferenceController(Context context)42 public BluetoothAvrcpVersionPreferenceController(Context context) { 43 super(context); 44 45 mListValues = context.getResources().getStringArray(R.array.bluetooth_avrcp_version_values); 46 mListSummaries = context.getResources().getStringArray(R.array.bluetooth_avrcp_versions); 47 } 48 49 @Override getPreferenceKey()50 public String getPreferenceKey() { 51 return BLUETOOTH_SELECT_AVRCP_VERSION_KEY; 52 } 53 54 @Override onPreferenceChange(Preference preference, Object newValue)55 public boolean onPreferenceChange(Preference preference, Object newValue) { 56 SystemProperties.set(BLUETOOTH_AVRCP_VERSION_PROPERTY, newValue.toString()); 57 updateState(mPreference); 58 return true; 59 } 60 61 @Override updateState(Preference preference)62 public void updateState(Preference preference) { 63 final ListPreference listPreference = (ListPreference) preference; 64 final String currentValue = SystemProperties.get(BLUETOOTH_AVRCP_VERSION_PROPERTY); 65 int index = 0; // Defaults to AVRCP 1.4 66 for (int i = 0; i < mListValues.length; i++) { 67 if (TextUtils.equals(currentValue, mListValues[i])) { 68 index = i; 69 break; 70 } 71 } 72 listPreference.setValue(mListValues[index]); 73 listPreference.setSummary(mListSummaries[index]); 74 } 75 } 76