1 /*
2  * Copyright (C) 2013 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 package com.android.transitiontests;
17 
18 import android.app.Activity;
19 import android.os.Bundle;
20 import android.transition.ChangeBounds;
21 import android.view.View;
22 import android.view.ViewGroup;
23 import android.transition.Crossfade;
24 import android.transition.Scene;
25 import android.transition.TransitionSet;
26 import android.transition.TransitionManager;
27 
28 
29 public class CrossFadeDemo extends Activity {
30 
31     ViewGroup mSceneRoot;
32     static int mCurrentScene;
33     Scene mScene1, mScene2;
34     TransitionManager mTransitionManager;
35 
36     @Override
onCreate(Bundle savedInstanceState)37     public void onCreate(Bundle savedInstanceState) {
38         super.onCreate(savedInstanceState);
39         setContentView(R.layout.crossfade);
40 
41         View container = (View) findViewById(R.id.container);
42         mSceneRoot = (ViewGroup) container.getParent();
43 
44         mScene1 = Scene.getSceneForLayout(mSceneRoot, R.layout.crossfade, this);
45         mScene2 = Scene.getSceneForLayout(mSceneRoot, R.layout.crossfade_1, this);
46 
47         Crossfade crossfade = new Crossfade();
48         crossfade.setFadeBehavior(Crossfade.FADE_BEHAVIOR_CROSSFADE);
49         crossfade.setResizeBehavior(Crossfade.RESIZE_BEHAVIOR_NONE);
50         crossfade.addTarget(R.id.textview).addTarget(R.id.textview1).
51                 addTarget(R.id.textview2);
52         mTransitionManager = new TransitionManager();
53         TransitionSet moveCrossFade = new TransitionSet();
54         moveCrossFade.addTransition(crossfade).addTransition(new ChangeBounds());
55         mTransitionManager.setTransition(mScene1, moveCrossFade);
56         mTransitionManager.setTransition(mScene2, moveCrossFade);
57         mCurrentScene = 1;
58     }
59 
sendMessage(View view)60     public void sendMessage(View view) {
61         if (mCurrentScene == 1) {
62             mTransitionManager.transitionTo(mScene2);
63             mCurrentScene = 2;
64         } else {
65             mTransitionManager.transitionTo(mScene1);
66             mCurrentScene = 1;
67         }
68     }
69 }
70