Android 开发 shape绘制圆形

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

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

 对于这个还欠缺理解

https://www.jb51.net/article/114790.htm这个说的很多的效果，可以看看。