CrossFadeDemo.java revision faebd8f0795b7d275fb4e503533c8c0c4a9acc21 
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 */
16package com.android.transitiontests;
17
18import android.app.Activity;
19import android.os.Bundle;
20import android.view.View;
21import android.view.ViewGroup;
22import android.view.transition.Crossfade;
23import android.view.transition.Move;
24import android.view.transition.Scene;
25import android.view.transition.TransitionGroup;
26import android.view.transition.TransitionManager;
27import com.android.transitiontest.R;
28
29
30public class CrossFadeDemo extends Activity {
31
32    ViewGroup mSceneRoot;
33    static int mCurrentScene;
34    Scene mScene1, mScene2;
35    TransitionManager mTransitionManager;
36
37    @Override
38    public void onCreate(Bundle savedInstanceState) {
39        super.onCreate(savedInstanceState);
40        setContentView(R.layout.crossfade);
41
42        View container = (View) findViewById(R.id.container);
43        mSceneRoot = (ViewGroup) container.getParent();
44
45        mScene1 = new Scene(mSceneRoot, R.layout.crossfade, this);
46        mScene2 = new Scene(mSceneRoot, R.layout.crossfade_1, this);
47
48        Crossfade crossfade = new Crossfade();
49        crossfade.setTargetIds(R.id.textview, R.id.textview1, R.id.textview2);
50        mTransitionManager = new TransitionManager();
51        TransitionGroup moveCrossFade = new TransitionGroup();
52        moveCrossFade.addTransitions(crossfade, new Move());
53        mTransitionManager.setTransition(mScene1, moveCrossFade);
54        mTransitionManager.setTransition(mScene2, moveCrossFade);
55        mCurrentScene = 1;
56    }
57
58    public void sendMessage(View view) {
59        if (mCurrentScene == 1) {
60            mTransitionManager.transitionTo(mScene2);
61            mCurrentScene = 2;
62        } else {
63            mTransitionManager.transitionTo(mScene1);
64            mCurrentScene = 1;
65        }
66    }
67}
68