1 /* 2 * Copyright (C) 2024 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.internal.annotations; 18 19 import android.util.Log; 20 21 import java.lang.ref.WeakReference; 22 import java.util.List; 23 24 public class ClassWithWeaklyReferencedCallback { 25 26 // This field should be kept despite being write-once, as the type has 27 // the necessary annotation. 28 private final AnnotatedCallback mKeptCallback = new AnnotatedCallback(); 29 30 // This field should be stripped as it's write-once and doesn't have the necessary annotation. 31 private final UnannotatedCallback mStrippedCallback = new UnannotatedCallback(); 32 ClassWithWeaklyReferencedCallback(List<WeakReference<Object>> weakRefs)33 public ClassWithWeaklyReferencedCallback(List<WeakReference<Object>> weakRefs) { 34 weakRefs.add(new WeakReference<>(mKeptCallback)); 35 weakRefs.add(new WeakReference<>(mStrippedCallback)); 36 } 37 38 @WeaklyReferencedCallback 39 public static class AnnotatedCallback { onCallback()40 public void onCallback() { 41 Log.i("AnnotatedCallback", "onCallback"); 42 } 43 } 44 45 public static class UnannotatedCallback { onCallback()46 public void onCallback() { 47 Log.i("UnannotatedCallback", "onCallBack"); 48 } 49 } 50 } 51