接口初步完成

dupengyue

2017-07-20 3a5f09c61a87adb8dba2cc4a5366893886ba1c1d

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<?xml version="1.0" encoding="utf-8"?> 
<alpha 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:fromAlpha="1.0" 
    android:toAlpha="0.0" 
    android:duration="300"/>