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.example.android.apis.animation;
17 
18 import com.example.android.apis.R;
19 
20 import android.app.Activity;
21 import android.app.ActivityOptions;
22 import android.app.SharedElementCallback;
23 import android.content.Intent;
24 import android.graphics.drawable.ColorDrawable;
25 import android.os.Bundle;
26 import android.view.View;
27 import android.widget.ImageView;
28 
29 import java.util.List;
30 import java.util.Map;
31 
32 /**
33  *
34  */
35 public class ActivityTransition extends Activity {
36 
37     private static final String TAG = "ActivityTransition";
38 
39     private static final String KEY_ID = "ViewTransitionValues:id";
40 
41     private ImageView mHero;
42 
43     public static final int[] DRAWABLES = {
44             R.drawable.ball,
45             R.drawable.block,
46             R.drawable.ducky,
47             R.drawable.jellies,
48             R.drawable.mug,
49             R.drawable.pencil,
50             R.drawable.scissors,
51             R.drawable.woot,
52     };
53 
54     public static final int[] IDS = {
55             R.id.ball,
56             R.id.block,
57             R.id.ducky,
58             R.id.jellies,
59             R.id.mug,
60             R.id.pencil,
61             R.id.scissors,
62             R.id.woot,
63     };
64 
65     public static final String[] NAMES = {
66             "ball",
67             "block",
68             "ducky",
69             "jellies",
70             "mug",
71             "pencil",
72             "scissors",
73             "woot",
74     };
75 
getIdForKey(String id)76     public static int getIdForKey(String id) {
77         return IDS[getIndexForKey(id)];
78     }
79 
getDrawableIdForKey(String id)80     public static int getDrawableIdForKey(String id) {
81         return DRAWABLES[getIndexForKey(id)];
82     }
83 
getIndexForKey(String id)84     public static int getIndexForKey(String id) {
85         for (int i = 0; i < NAMES.length; i++) {
86             String name = NAMES[i];
87             if (name.equals(id)) {
88                 return i;
89             }
90         }
91         return 2;
92     }
93 
94     @Override
onCreate(Bundle savedInstanceState)95     protected void onCreate(Bundle savedInstanceState) {
96         super.onCreate(savedInstanceState);
97         getWindow().setBackgroundDrawable(new ColorDrawable(randomColor()));
98         setContentView(R.layout.image_block);
99         setupHero();
100     }
101 
setupHero()102     private void setupHero() {
103         String name = getIntent().getStringExtra(KEY_ID);
104         mHero = null;
105         if (name != null) {
106             mHero = (ImageView) findViewById(getIdForKey(name));
107             setEnterSharedElementCallback(new SharedElementCallback() {
108                 @Override
109                 public void onMapSharedElements(List<String> names,
110                         Map<String, View> sharedElements) {
111                     sharedElements.put("hero", mHero);
112                 }
113             });
114         }
115     }
116 
clicked(View v)117     public void clicked(View v) {
118         mHero = (ImageView) v;
119         Intent intent = new Intent(this, ActivityTransitionDetails.class);
120         intent.putExtra(KEY_ID, v.getTransitionName());
121         ActivityOptions activityOptions
122                 = ActivityOptions.makeSceneTransitionAnimation(this, mHero, "hero");
123         startActivity(intent, activityOptions.toBundle());
124     }
125 
randomColor()126     private static int randomColor() {
127         int red = (int)(Math.random() * 128);
128         int green = (int)(Math.random() * 128);
129         int blue = (int)(Math.random() * 128);
130         return 0xFF000000 | (red << 16) | (green << 8) | blue;
131     }
132 }
133