android利用shape画半圆

      在网上观察下来，好像画半圆的资料没有，所以这边提供一个画半圆的关于shape的xml文件。

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape = "rectangle"
    >
    <size android:height="40dp"
        android:width="80dp"/>
    <solid android:color = "#f74b4b" />
    <corners
        android:bottomLeftRadius = "0dp"
        android:bottomRightRadius = "0dp"
        android:topLeftRadius = "60dp"
        android:topRightRadius = "60dp"/>
</shape>