按鈕邊框，半圓角

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    //這裏是Linearlayout佈局的背景顏色
    <solid android:color="#363636"
        />

    <stroke
        android:width="1dp"
        android:color="#ffffff"
        />

    <corners android:topLeftRadius="0dp" android:bottomLeftRadius="0dp"
        android:topRightRadius="30dp" android:bottomRightRadius="30dp"/>


</shape>