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 
17 package android.transition;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 
22 /**
23  * Utility class for creating a default transition that automatically fades,
24  * moves, and resizes views during a scene change.
25  *
26  * <p>An AutoTransition can be described in a resource file by using the
27  * tag <code>autoTransition</code>, along with the other standard
28  * attributes of {@link android.R.styleable#Transition}.</p>
29  */
30 public class AutoTransition extends TransitionSet {
31 
32     /**
33      * Constructs an AutoTransition object, which is a TransitionSet which
34      * first fades out disappearing targets, then moves and resizes existing
35      * targets, and finally fades in appearing targets.
36      *
37      */
AutoTransition()38     public AutoTransition() {
39         init();
40     }
41 
AutoTransition(Context context, AttributeSet attrs)42     public AutoTransition(Context context, AttributeSet attrs) {
43         super(context, attrs);
44         init();
45     }
46 
init()47     private void init() {
48         setOrdering(ORDERING_SEQUENTIAL);
49         addTransition(new Fade(Fade.OUT)).
50                 addTransition(new ChangeBounds()).
51                 addTransition(new Fade(Fade.IN));
52     }
53 }
54