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 17 package androidx.lifecycle; 18 19 /** 20 * Marks a class as a LifecycleObserver. It does not have any methods, instead, relies on 21 * {@link OnLifecycleEvent} annotated methods. 22 * <p> 23 * @see Lifecycle Lifecycle - for samples and usage patterns. 24 */ 25 @SuppressWarnings("WeakerAccess") 26 public interface LifecycleObserver { 27 28 } 29