1 /* 2 * Copyright (C) 2019 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.car.themeplayground; 18 19 import android.app.Activity; 20 import android.content.Intent; 21 22 /** 23 * Utility class for changing the theme of the app at run time. 24 */ 25 public class Utils { 26 static String sThemeName = ""; 27 private static int sThemeResId = 0; 28 29 /** 30 * Set the theme of the Activity, and restart it by creating a new Activity of the same type. 31 */ changeToTheme(Activity activity, String themeName, int themeResId)32 public static void changeToTheme(Activity activity, String themeName, int themeResId) { 33 sThemeName = themeName; 34 sThemeResId = themeResId; 35 activity.finish(); 36 activity.startActivity(new Intent(activity, activity.getClass())); 37 } 38 39 /** Set the theme of the activity, according to the configuration. */ onActivityCreateSetTheme(Activity activity)40 public static void onActivityCreateSetTheme(Activity activity) { 41 if (sThemeName.equals("")) { 42 activity.setTheme(android.R.style.Theme_DeviceDefault); 43 } else { 44 activity.setTheme(sThemeResId); 45 } 46 } 47 } 48