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.datetime; 18 19 import android.content.Context; 20 import android.provider.Settings; 21 import android.provider.Settings.System; 22 import android.text.TextUtils; 23 import android.text.format.DateFormat; 24 25 import androidx.preference.Preference; 26 import androidx.preference.SwitchPreference; 27 import androidx.preference.TwoStatePreference; 28 29 import com.android.settings.core.PreferenceControllerMixin; 30 import com.android.settingslib.core.AbstractPreferenceController; 31 32 import java.util.Locale; 33 34 public class AutoTimeFormatPreferenceController extends AbstractPreferenceController 35 implements PreferenceControllerMixin { 36 37 private static final String KEY_AUTO_24_HOUR = "auto_24hour"; 38 AutoTimeFormatPreferenceController(Context context, UpdateTimeAndDateCallback callback)39 public AutoTimeFormatPreferenceController(Context context, UpdateTimeAndDateCallback callback) { 40 super(context); 41 } 42 43 @Override isAvailable()44 public boolean isAvailable() { 45 return true; 46 } 47 48 @Override getPreferenceKey()49 public String getPreferenceKey() { 50 return KEY_AUTO_24_HOUR; 51 } 52 53 @Override updateState(Preference preference)54 public void updateState(Preference preference) { 55 if (!(preference instanceof SwitchPreference)) { 56 return; 57 } 58 ((SwitchPreference) preference).setChecked(isAutoTimeFormatSelection(mContext)); 59 } 60 61 @Override handlePreferenceTreeClick(Preference preference)62 public boolean handlePreferenceTreeClick(Preference preference) { 63 if (!(preference instanceof TwoStatePreference) 64 || !TextUtils.equals(KEY_AUTO_24_HOUR, preference.getKey())) { 65 return false; 66 } 67 boolean auto24HourEnabled = ((SwitchPreference) preference).isChecked(); 68 Boolean is24Hour; 69 if (auto24HourEnabled) { 70 is24Hour = null; 71 } else { 72 is24Hour = is24HourLocale(mContext.getResources().getConfiguration().locale); 73 } 74 TimeFormatPreferenceController.update24HourFormat(mContext, is24Hour); 75 return true; 76 } 77 is24HourLocale(Locale locale)78 boolean is24HourLocale(Locale locale) { 79 return DateFormat.is24HourLocale(locale); 80 } 81 82 /** 83 * Returns if the system is currently configured to pick the time format automatically based on 84 * the locale. 85 */ isAutoTimeFormatSelection(Context context)86 static boolean isAutoTimeFormatSelection(Context context) { 87 return Settings.System.getString(context.getContentResolver(), System.TIME_12_24) == null; 88 } 89 } 90