Use style background resource invalid

[qiujuer]

In style:
<style name="AppTheme.Button.Background" parent="Genius.Widget.Button"> <item name="android:background">@drawable/m_button_background</item> </style>
used:
<net.qiujuer.genius.ui.widget.Button android:layout_width="0dp" android:layout_height="@dimen/size_52" android:layout_marginLeft="@dimen/lay_4" android:layout_marginRight="@dimen/lay_4" android:layout_weight="1" style="@style/AppTheme.Button.Background" android:text="Ease" android:textColor="@color/white_alpha_224" app:gTouchEffect="ease" />
but the "android:background" invalid.

[qiujuer]

This is a bug, in initial method and constructor.