From c14aa2fa8a204053fb5ffa2168f360a5433bdc96 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=9C=E5=BA=86=E6=B3=89?= <duqingquan@dcloud.io>
Date: Fri, 11 Nov 2022 16:41:06 +0800
Subject: [PATCH] Update uts-for-android.md

---
 docs/plugin/uts-for-android.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/docs/plugin/uts-for-android.md b/docs/plugin/uts-for-android.md
index 17a38a944..220ac39a1 100644
--- a/docs/plugin/uts-for-android.md
+++ b/docs/plugin/uts-for-android.md
@@ -452,6 +452,25 @@ let intent = new Intent(getUniActivity(),DemoActivity().javaClass);
 getUniActivity()!.startActivity(intent);
 ```
 
+#### 4.1.11 指定double数据类型
+
+某些场景下开发者需要获得 指定double数据类型的数据
+
+前端常用的写法：
+```
+let a:Int =3
+let b:Int =4
+let c:Double  = a/b
+```
+
+但是Android原生环境中，数据类型的精度是向下兼容的，如果想要获得一个double类型，必须要有一个double类型参与运算：
+
+```
+let a:Int =3
+let b:Int =4
+let c:Double  = a * 1.0 / b
+```
+
 
 ---------------------------------
 
-- 
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