1 /* 2 * Copyright (C) 2016 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 com.android.settings.display; 17 18 import static android.provider.Settings.System.SHOW_BATTERY_PERCENT; 19 20 import android.content.Context; 21 import android.provider.Settings; 22 23 import androidx.preference.Preference; 24 import androidx.preference.SwitchPreference; 25 26 import com.android.internal.R; 27 import com.android.settings.core.BasePreferenceController; 28 import com.android.settings.core.PreferenceControllerMixin; 29 30 /** 31 * A controller to manage the switch for showing battery percentage in the status bar. 32 */ 33 34 public class BatteryPercentagePreferenceController extends BasePreferenceController implements 35 PreferenceControllerMixin, Preference.OnPreferenceChangeListener { 36 BatteryPercentagePreferenceController(Context context, String preferenceKey)37 public BatteryPercentagePreferenceController(Context context, String preferenceKey) { 38 super(context, preferenceKey); 39 } 40 41 @Override getAvailabilityStatus()42 public int getAvailabilityStatus() { 43 return mContext.getResources().getBoolean( 44 R.bool.config_battery_percentage_setting_available) ? AVAILABLE 45 : UNSUPPORTED_ON_DEVICE; 46 } 47 48 @Override updateState(Preference preference)49 public void updateState(Preference preference) { 50 int setting = Settings.System.getInt(mContext.getContentResolver(), 51 SHOW_BATTERY_PERCENT, 0); 52 53 ((SwitchPreference) preference).setChecked(setting == 1); 54 } 55 56 @Override onPreferenceChange(Preference preference, Object newValue)57 public boolean onPreferenceChange(Preference preference, Object newValue) { 58 boolean showPercentage = (Boolean) newValue; 59 Settings.System.putInt(mContext.getContentResolver(), SHOW_BATTERY_PERCENT, 60 showPercentage ? 1 : 0); 61 return true; 62 } 63 } 64