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.view.View;
21 import android.view.ViewGroup;
22 import android.transition.Crossfade;
23 import android.transition.ChangeBounds;
24 import android.transition.Scene;
25 import android.transition.Transition;
26 import android.transition.TransitionSet;
27 import android.transition.TransitionManager;
28 import android.widget.ImageView;
29 
30 public class CrossfadeImage extends Activity {
31     ViewGroup mSceneRoot;
32     static int mCurrentScene;
33     Scene mScene1, mScene2;
34     TransitionManager mTransitionManager;
35     boolean mExpanded = false;
36     Transition mTransition;
37     ImageView mImageView;
38 
39     @Override
onCreate(Bundle savedInstanceState)40     public void onCreate(Bundle savedInstanceState) {
41         super.onCreate(savedInstanceState);
42         setContentView(R.layout.crossfade_image);
43 
44         ViewGroup container = findViewById(R.id.container);
45         mSceneRoot = container;
46 
47         mImageView = findViewById(R.id.contact_picture);
48         mImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
49 
50         Crossfade mCrossfade = new Crossfade();
51         mCrossfade.addTarget(R.id.contact_picture);
52 
53         TransitionSet group = new TransitionSet();
54         group.setDuration(1500);
55         group.addTransition(mCrossfade).addTransition(new ChangeBounds());
56         mTransition = group;
57     }
58 
sendMessage(View view)59     public void sendMessage(View view) {
60         TransitionManager.beginDelayedTransition(mSceneRoot, mTransition);
61         if (mExpanded) {
62             mImageView.setImageResource(R.drawable.self_portrait_square_100);
63         } else {
64             mImageView.setImageResource(R.drawable.self_portrait_square_200);
65         }
66         mExpanded = !mExpanded;
67     }
68 }
69