content: /*
   * Copyright (C) 2013 The Android Open Source Project
   *
   * 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.example.android.basictransition;
  
  import android.os.Bundle;
  import androidx.fragment.app.Fragment;
  import android.transition.Scene;
  import android.transition.TransitionInflater;
  import android.transition.TransitionManager;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.RadioGroup;
  
  public class BasicTransitionFragment extends Fragment
          implements RadioGroup.OnCheckedChangeListener {
  
      // We transition between these Scenes
      private Scene mScene1;
      private Scene mScene2;
      private Scene mScene3;
  
      /** A custom TransitionManager */
      private TransitionManager mTransitionManagerForScene3;
  
      /** Transitions take place in this ViewGroup. We retain this for the dynamic transition on scene 4. */
      private ViewGroup mSceneRoot;
  
      public static BasicTransitionFragment newInstance() {
          return new BasicTransitionFragment();
      }
  
      public BasicTransitionFragment() {
      }
  
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
                               Bundle savedInstanceState) {
          View view = inflater.inflate(R.layout.fragment_basic_transition, container, false);
          assert view != null;
          RadioGroup radioGroup = (RadioGroup) view.findViewById(R.id.select_scene);
          radioGroup.setOnCheckedChangeListener(this);
          mSceneRoot = (ViewGroup) view.findViewById(R.id.scene_root);
  
          // BEGIN_INCLUDE(instantiation_from_view)
          // A Scene can be instantiated from a live view hierarchy.
          mScene1 = new Scene(mSceneRoot, (ViewGroup) mSceneRoot.findViewById(R.id.container));
          // END_INCLUDE(instantiation_from_view)
  
          // BEGIN_INCLUDE(instantiation_from_resource)
          // You can also inflate a generate a Scene from a layout resource file.
          mScene2 = Scene.getSceneForLayout(mSceneRoot, R.layout.scene2, getActivity());
          // END_INCLUDE(instantiation_from_resource)
  
          // Another scene from a layout resource file.
          mScene3 = Scene.getSceneForLayout(mSceneRoot, R.layout.scene3, getActivity());
  
          // BEGIN_INCLUDE(custom_transition_manager)
          // We create a custom TransitionManager for Scene 3, in which ChangeBounds and Fade
          // take place at the same time.
          mTransitionManagerForScene3 = TransitionInflater.from(getActivity())
                  .inflateTransitionManager(R.transition.scene3_transition_manager, mSceneRoot);
          // END_INCLUDE(custom_transition_manager)
  
          return view;
      }
  
      @Override
      public void onCheckedChanged(RadioGroup group, int checkedId) {
          switch (checkedId) {
              case R.id.select_scene_1: {
                  // BEGIN_INCLUDE(transition_simple)
                  // You can start an automatic transition with TransitionManager.go().
                  TransitionManager.go(mScene1);
                  // END_INCLUDE(transition_simple)
                  break;
              }
              case R.id.select_scene_2: {
                  TransitionManager.go(mScene2);
                  break;
              }
              case R.id.select_scene_3: {
                  // BEGIN_INCLUDE(transition_custom)
                  // You can also start a transition with a custom TransitionManager.
                  mTransitionManagerForScene3.transitionTo(mScene3);
                  // END_INCLUDE(transition_custom)
                  break;
              }
              case R.id.select_scene_4: {
                  // BEGIN_INCLUDE(transition_dynamic)
                  // Alternatively, transition can be invoked dynamically without a Scene.
                  // For this, we first call TransitionManager.beginDelayedTransition().
                  TransitionManager.beginDelayedTransition(mSceneRoot);
                  // Then, we can just change view properties as usual.
                  View square = mSceneRoot.findViewById(R.id.transition_square);
                  ViewGroup.LayoutParams params = square.getLayoutParams();
                  int newSize = getResources().getDimensionPixelSize(R.dimen.square_size_expanded);
                  params.width = newSize;
                  params.height = newSize;
                  square.setLayoutParams(params);
                  // END_INCLUDE(transition_dynamic)
                  break;
              }
          }
      }
  
  }
  