简单替换RadioButton修改前方按键式样

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:state_focused="false"
android:state_checked="false"
android:state_pressed="false"
android:drawable="@drawable/icon_item_null"
>
</item>
<item
android:state_focused="false"
android:state_checked="true"
android:state_pressed="false"
android:drawable="@drawable/icon_item_selected_press_64"
>
</item>
<item
android:state_focused="true"
android:state_checked="false"
android:state_pressed="false"
android:drawable="@drawable/icon_item_selected_64"
>
</item>
<item
android:state_focused="true"
android:state_checked="true"
android:state_pressed="false"
android:drawable="@drawable/icon_item_selected_press_64"
>
</item>

<item
android:state_focused="true"
android:state_checked="false"
android:state_pressed="true"
android:drawable="@drawable/icon_item_selected_press_64"
>
</item>

</selector>

<RadioButton
android:paddingLeft="10dp"
android:paddingRight="15dp"
android:id="@+id/hdmi1_4"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="@string/str_hdmi14"
android:textColor="@color/white"
android:textSize="32sp"
android:button="@drawable/radio_btn"
android:shadowColor="@color/transparent"
android:background="@drawable/rightmenu_item_selector"/>