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BasicTransition / src / com.example.android.basictransition /

BasicTransitionFragment.java

       
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        /*
       
       
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        * Copyright (C) 2013 The Android Open Source Project
       
       
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        *
       
       
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        * Licensed under the Apache License, Version 2.0 (the "License");
       
       
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        * you may not use this file except in compliance with the License.
       
       
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        * You may obtain a copy of the License at
       
       
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        *
       
       
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        *      http://www.apache.org/licenses/LICENSE-2.0
       
       
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        *
       
       
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        * Unless required by applicable law or agreed to in writing, software
       
       
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        * distributed under the License is distributed on an "AS IS" BASIS,
       
       
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        * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       
       
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        * See the License for the specific language governing permissions and
       
       
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        * limitations under the License.
       
       
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        */
       
       
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        package com.example.android.basictransition;
       
       
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        import android.os.Bundle;
       
       
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        import android.support.v4.app.Fragment;
       
       
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        import android.transition.Scene;
       
       
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        import android.transition.TransitionInflater;
       
       
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        import android.transition.TransitionManager;
       
       
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        import android.view.LayoutInflater;
       
       
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        import android.view.View;
       
       
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        import android.view.ViewGroup;
       
       
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        import android.widget.RadioGroup;
       
       
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        public class BasicTransitionFragment extends Fragment
       
       
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        implements RadioGroup.OnCheckedChangeListener {
       
       
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        // We transition between these Scenes
       
       
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        private Scene mScene1;
       
       
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        private Scene mScene2;
       
       
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        private Scene mScene3;
       
       
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        /** A custom TransitionManager */
       
       
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        private TransitionManager mTransitionManagerForScene3;
       
       
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        /** Transitions take place in this ViewGroup. We retain this for the dynamic transition on scene 4. */
       
       
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        private ViewGroup mSceneRoot;
       
       
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        public static BasicTransitionFragment newInstance() {
       
       
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        return new BasicTransitionFragment();
       
       
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        }
       
       
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        public BasicTransitionFragment() {
       
       
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        }
       
       
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        @Override
       
       
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        public View onCreateView(LayoutInflater inflater, ViewGroup container,
       
       
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        Bundle savedInstanceState) {
       
       
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        View view = inflater.inflate(R.layout.fragment_basic_transition, container, false);
       
       
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        assert view != null;
       
       
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        RadioGroup radioGroup = (RadioGroup) view.findViewById(R.id.select_scene);
       
       
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        radioGroup.setOnCheckedChangeListener(this);
       
       
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        mSceneRoot = (ViewGroup) view.findViewById(R.id.scene_root);
       
       
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        // A Scene can be instantiated from a live view hierarchy.
       
       
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        mScene1 = new Scene(mSceneRoot, (ViewGroup) mSceneRoot.findViewById(R.id.container));
       
       
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        // You can also inflate a generate a Scene from a layout resource file.
       
       
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        mScene2 = Scene.getSceneForLayout(mSceneRoot, R.layout.scene2, getActivity());
       
       
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        // Another scene from a layout resource file.
       
       
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        mScene3 = Scene.getSceneForLayout(mSceneRoot, R.layout.scene3, getActivity());
       
       
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        // We create a custom TransitionManager for Scene 3, in which ChangeBounds and Fade
       
       
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        // take place at the same time.
       
       
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        mTransitionManagerForScene3 = TransitionInflater.from(getActivity())
       
       
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        .inflateTransitionManager(R.transition.scene3_transition_manager, mSceneRoot);
       
       
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        return view;
       
       
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        }
       
       
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        @Override
       
       
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        public void onCheckedChanged(RadioGroup group, int checkedId) {
       
       
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        switch (checkedId) {
       
       
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        case R.id.select_scene_1: {
       
       
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        // You can start an automatic transition with TransitionManager.go().
       
       
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        TransitionManager.go(mScene1);
       
       
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        break;
       
       
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        }
       
       
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        case R.id.select_scene_2: {
       
       
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        TransitionManager.go(mScene2);
       
       
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        break;
       
       
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        }
       
       
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        case R.id.select_scene_3: {
       
       
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        // You can also start a transition with a custom TransitionManager.
       
       
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        mTransitionManagerForScene3.transitionTo(mScene3);
       
       
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        break;
       
       
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        }
       
       
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        case R.id.select_scene_4: {
       
       
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        // Alternatively, transition can be invoked dynamically without a Scene.
       
       
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        // For this, we first call TransitionManager.beginDelayedTransition().
       
       
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        TransitionManager.beginDelayedTransition(mSceneRoot);
       
       
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        // Then, we can just change view properties as usual.
       
       
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        View square = mSceneRoot.findViewById(R.id.transition_square);
       
       
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        ViewGroup.LayoutParams params = square.getLayoutParams();
       
       
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        int newSize = getResources().getDimensionPixelSize(R.dimen.square_size_expanded);
       
       
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        params.width = newSize;
       
       
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        params.height = newSize;
       
       
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        square.setLayoutParams(params);
       
       
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        break;
       
       
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        }
       
       
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        }
       
       
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        }
       
       
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        }