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      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
     40     public void onCreate(Bundle savedInstanceState) {
     41         super.onCreate(savedInstanceState);
     42         setContentView(R.layout.crossfade_image);
     43 
     44         ViewGroup container = (ViewGroup) findViewById(R.id.container);
     45         mSceneRoot = container;
     46 
     47         mImageView = (ImageView) 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 
     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