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 17 package android.print.test.services; 18 19 import android.app.Activity; 20 import android.os.Bundle; 21 import androidx.annotation.NonNull; 22 23 import java.util.ArrayList; 24 25 public class AddPrintersActivity extends Activity { 26 private static final ArrayList<Runnable> sObservers = new ArrayList<>(); 27 28 public static void addObserver(@NonNull Runnable observer) { 29 synchronized (sObservers) { 30 sObservers.add(observer); 31 } 32 } 33 34 @Override 35 protected void onCreate(Bundle savedInstanceState) { 36 super.onCreate(savedInstanceState); 37 38 synchronized (sObservers) { 39 for (Runnable sObserver : sObservers) { 40 sObserver.run(); 41 } 42 } 43 44 finish(); 45 } 46 47 public static void clearObservers() { 48 synchronized (sObservers) { 49 sObservers.clear(); 50 } 51 } 52 } 53
