转:http://www.maxiaoguo.com/shipin/323.html
drawble这个bitmap就可以了
<?xml version ="1.0" encoding ="utf-8" ?>
<bitmapxmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/friend_addfriend_bg"
android:filter="true"
android:antialias="true"
android:tileMode="repeat" />