1 /* 2 * Copyright (C) 2014 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.example.android.supportv7.app; 17 18 import android.os.Bundle; 19 import android.view.View; 20 21 import androidx.annotation.Nullable; 22 import androidx.appcompat.app.AlertDialog; 23 import androidx.appcompat.app.AppCompatActivity; 24 import androidx.appcompat.app.AppCompatDelegate; 25 26 import com.example.android.supportv7.R; 27 28 /** 29 * This demonstrates idiomatic usage of AlertDialog with Theme.AppCompat.DayNight 30 */ 31 public class AppCompatNightModeAlertDialog extends AppCompatActivity { 32 33 @Override 34 protected void onCreate(@Nullable Bundle savedInstanceState) { 35 super.onCreate(savedInstanceState); 36 setContentView(R.layout.appcompat_night_mode); 37 } 38 39 public void setModeNightNo(View view) { 40 AlertDialog dialog = createAlertDialog(); 41 dialog.getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO); 42 dialog.show(); 43 } 44 45 public void setModeNightYes(View view) { 46 AlertDialog dialog = createAlertDialog(); 47 dialog.getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES); 48 dialog.show(); 49 } 50 51 public void setModeNightAuto(View view) { 52 AlertDialog dialog = createAlertDialog(); 53 dialog.getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_AUTO); 54 dialog.show(); 55 } 56 57 private AlertDialog createAlertDialog() { 58 AlertDialog.Builder b = new AlertDialog.Builder(this, 59 R.style.Theme_AppCompat_DayNight_Dialog_Alert); 60 b.setTitle(R.string.dialog_title); 61 b.setMessage(R.string.dialog_content); 62 return b.create(); 63 } 64 65 } 66
