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 package com.android.wallpaper.picker; 17 18 import android.app.Dialog; 19 import android.content.DialogInterface; 20 import android.os.Bundle; 21 22 import com.android.wallpaper.R; 23 24 import androidx.annotation.NonNull; 25 import androidx.appcompat.app.AlertDialog; 26 import androidx.fragment.app.DialogFragment; 27 28 /** 29 * Dialog fragment which communicates a message that loading the wallpaper failed with an OK button, 30 * when clicked will navigate the user back to the previous activity. 31 */ 32 public class LoadWallpaperErrorDialogFragment extends DialogFragment { 33 newInstance()34 public static LoadWallpaperErrorDialogFragment newInstance() { 35 return new LoadWallpaperErrorDialogFragment(); 36 } 37 38 @Override 39 @NonNull onCreateDialog(Bundle savedInstanceState)40 public Dialog onCreateDialog(Bundle savedInstanceState) { 41 super.onCreateDialog(savedInstanceState); 42 43 return new AlertDialog.Builder(getActivity(), R.style.LightDialogTheme) 44 .setMessage(R.string.load_wallpaper_error_message) 45 .setPositiveButton(android.R.string.ok, 46 new DialogInterface.OnClickListener() { 47 @Override 48 public void onClick(DialogInterface dialogInterface, int i) { 49 Listener callback = (Listener) getTargetFragment(); 50 callback.onClickOk(); 51 } 52 } 53 ) 54 .create(); 55 } 56 57 @Override 58 public void onDismiss(DialogInterface dialogInterface) { 59 super.onDismiss(dialogInterface); 60 61 // Treat a dismissal by user click outside the dialog foreground the same as the user clicking 62 // "OK" to dismiss the dialog. 63 Listener callback = (Listener) getTargetFragment(); 64 callback.onClickOk(); 65 } 66 67 /** 68 * Interface which clients of this DialogFragment should implement in order to handle user actions 69 * on the dialog's buttons. 70 */ 71 public interface Listener { 72 void onClickOk(); 73 } 74 } 75