1 /* 2 * Copyright (C) 2014 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 com.example.android.customtransition; 18 19 import com.example.android.common.logger.Log; 20 21 import android.content.Context; 22 import android.os.Bundle; 23 import android.support.v4.app.Fragment; 24 import android.transition.Scene; 25 import android.transition.Transition; 26 import android.transition.TransitionManager; 27 import android.view.LayoutInflater; 28 import android.view.View; 29 import android.view.ViewGroup; 30 import android.widget.FrameLayout; 31 32 public class CustomTransitionFragment extends Fragment implements View.OnClickListener { 33 34 private static final String STATE_CURRENT_SCENE = "current_scene"; 35 36 /** Tag for the logger */ 37 private static final String TAG = "CustomTransitionFragment"; 38 39 /** These are the Scenes we use. */ 40 private Scene[] mScenes; 41 42 /** The current index for mScenes. */ 43 private int mCurrentScene; 44 45 /** This is the custom Transition we use in this sample. */ 46 private Transition mTransition; 47 48 public CustomTransitionFragment() { 49 } 50 51 @Override 52 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 53 return inflater.inflate(R.layout.fragment_custom_transition, container, false); 54 } 55 56 @Override 57 public void onViewCreated(View view, Bundle savedInstanceState) { 58 Context context = getActivity(); 59 FrameLayout container = (FrameLayout) view.findViewById(R.id.container); 60 view.findViewById(R.id.show_next_scene).setOnClickListener(this); 61 if (null != savedInstanceState) { 62 mCurrentScene = savedInstanceState.getInt(STATE_CURRENT_SCENE); 63 } 64 // We set up the Scenes here. 65 mScenes = new Scene[] { 66 Scene.getSceneForLayout(container, R.layout.scene1, context), 67 Scene.getSceneForLayout(container, R.layout.scene2, context), 68 Scene.getSceneForLayout(container, R.layout.scene3, context), 69 }; 70 // This is the custom Transition. 71 mTransition = new ChangeColor(); 72 // Show the initial Scene. 73 TransitionManager.go(mScenes[mCurrentScene % mScenes.length]); 74 } 75 76 @Override 77 public void onSaveInstanceState(Bundle outState) { 78 super.onSaveInstanceState(outState); 79 outState.putInt(STATE_CURRENT_SCENE, mCurrentScene); 80 } 81 82 @Override 83 public void onClick(View v) { 84 switch (v.getId()) { 85 case R.id.show_next_scene: { 86 mCurrentScene = (mCurrentScene + 1) % mScenes.length; 87 Log.i(TAG, "Transitioning to scene #" + mCurrentScene); 88 // Pass the custom Transition as second argument for TransitionManager.go 89 TransitionManager.go(mScenes[mCurrentScene], mTransition); 90 break; 91 } 92 } 93 } 94 95 } 96
