MaterialHeader 下拉刷新时，有阴影，请查看截图

[gxg-886]

MaterialHeader 下拉刷新时，有阴影，请查看截图
自定义的Header代码
class MyMaterialHeader : MaterialHeader {
constructor(context: Context?) : super(context)
constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)

override fun setProgressBackgroundColorSchemeResource(colorRes: Int): MaterialHeader {
return super.setProgressBackgroundColorSchemeResource(colorRes)
}

override fun setColorSchemeResources(vararg colorIds: Int): MaterialHeader {
return super.setColorSchemeResources(*colorIds)
}

override fun setSize(size: Int): MyMaterialHeader {
mCircleDiameter = ResUtils.getDimensionPixelSize(R.dimen.common_sw_40dp)
mCircleView.setImageDrawable(null)
mProgress.updateSizes(size)
mCircleView.setImageDrawable(mProgress)
return this
}}