/* * Copyright (C) 2019 ByteDance Inc * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.bytedance.scene.ui; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.annotation.RestrictTo; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import com.bytedance.scene.SceneContainerLifecycleCallback; import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; /** * @hide */ @RestrictTo(LIBRARY_GROUP) public class LifeCycleCompatFragment extends Fragment { public static LifeCycleCompatFragment newInstance(boolean supportRestore) { LifeCycleCompatFragment fragment = new LifeCycleCompatFragment(); return fragment; } private SceneContainerLifecycleCallback mSceneContainerLifecycleCallback = null; public void setSceneContainerLifecycleCallback(SceneContainerLifecycleCallback callback) { this.mSceneContainerLifecycleCallback = callback; } @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setRetainInstance(false); } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onActivityCreated(getActivity(), savedInstanceState); } else { removeSelfWhenNavigationSceneUtilityIsNotInvoked(); } } //developer may not invoke NavigationSceneCompatUtility.setupWithFragment which will clean unused LifeCycleCompatFragment when app is restored, //for example Activity.finish()+return, at this moment, we should clean LifeCycleCompatFragment private void removeSelfWhenNavigationSceneUtilityIsNotInvoked() { FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction().remove(LifeCycleCompatFragment.this); FragmentUtility.commitFragment(fragmentTransaction, false); } @Override public void onStart() { super.onStart(); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onStarted(); } } @Override public void onResume() { super.onResume(); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onResumed(); } } @Override public void onPause() { super.onPause(); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onPaused(); } } @Override public void onSaveInstanceState(@NonNull Bundle outState) { super.onSaveInstanceState(outState); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onSaveInstanceState(outState); } } @Override public void onStop() { super.onStop(); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onStopped(); } } @Override public void onDestroyView() { super.onDestroyView(); if (this.mSceneContainerLifecycleCallback != null) { this.mSceneContainerLifecycleCallback.onViewDestroyed(); } } }