<?xml version="1.0" encoding="utf-8"?> <!-- ~ Copyright (C) 2014 The Android Open Source Project ~ ~ Licensed under the Apache License, Version 2.0 (the "License"); ~ you may not use this file except in compliance with the License. ~ You may obtain a copy of the License at ~ ~ http://www.apache.org/licenses/LICENSE-2.0 ~ ~ Unless required by applicable law or agreed to in writing, software ~ distributed under the License is distributed on an "AS IS" BASIS, ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ~ See the License for the specific language governing permissions and ~ limitations under the License --> <alpha xmlns:android="http://schemas.android.com/apk/res/android" android:fromAlpha="0.5" android:toAlpha="1" android:duration="600" android:repeatCount="infinite" android:repeatMode="reverse" />