how to insert a gradient background in android code example

Example: how to set gradient background in android

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle">    <gradient        android:startColor="#ff2d9a59"        android:endColor="#ff23729a"        android:angle="90" /></shape>