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 import androidx.annotation.RestrictTo; 20 21 /** 22 * Internal class that can receive any lifecycle change and dispatch it to the receiver. 23 * @hide 24 */ 25 @RestrictTo(RestrictTo.Scope.LIBRARY) 26 @SuppressWarnings({"WeakerAccess", "unused"}) 27 public interface GenericLifecycleObserver extends LifecycleObserver { 28 /** 29 * Called when a state transition event happens. 30 * 31 * @param source The source of the event 32 * @param event The event 33 */ 34 void onStateChanged(LifecycleOwner source, Lifecycle.Event event); 35 } 36
