通过修改样式来解决
<resources>
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="android:windowBackground">@null</item>
<item name="android:windowDisablePreview">true</item>
</style>
</resources>
android:windowBackground设置启动是的窗口背景, 设置为null
android:windowDisablePreview设置为true, 关闭window加载时的图片
