1 /*
2  * Copyright (C) 2015 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.test.uibench;
17 
18 import android.graphics.Canvas;
19 import android.graphics.Color;
20 import android.graphics.drawable.ColorDrawable;
21 import android.os.Bundle;
22 import android.support.v7.app.AppCompatActivity;
23 
24 public class TrivialAnimationActivity extends AppCompatActivity {
25     @Override
onCreate(Bundle savedInstanceState)26     protected void onCreate(Bundle savedInstanceState) {
27         super.onCreate(savedInstanceState);
28         getWindow().setBackgroundDrawable(new ColorDrawable() {
29             int colorValue = 0;
30             int colorDelta = 1;
31 
32             @Override
33             public void draw(Canvas canvas) {
34                 colorValue += colorDelta;
35                 if (colorValue == 255 || colorValue == 0) {
36                     colorDelta *= -1;
37                 }
38 
39                 setColor(Color.rgb(255, colorValue, 255 - colorValue));
40                 invalidateSelf();
41                 super.draw(canvas);
42             }
43         });
44     }
45 }
46