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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.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 
     76     public static int getIdForKey(String id) {
     77         return IDS[getIndexForKey(id)];
     78     }
     79 
     80     public static int getDrawableIdForKey(String id) {
     81         return DRAWABLES[getIndexForKey(id)];
     82     }
     83 
     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
     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 
    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 
    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 
    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