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 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
