From 068b6176f2ce37f60894c17ff11359ba5059091b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=85=AB=E5=AE=9D=E7=B2=A5?= <zxiaofoo@qq.com>
Date: Tue, 6 Dec 2022 17:53:54 +0800
Subject: [PATCH] =?UTF-8?q?fix(u-dropdown):=20=F0=9F=90=9E=20=E4=BF=AE?=
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对代码其他部分无修改，仅更改设置contentHeight的时机

#608
---
 uview-ui/components/u-dropdown/u-dropdown.vue | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/uview-ui/components/u-dropdown/u-dropdown.vue b/uview-ui/components/u-dropdown/u-dropdown.vue
index a62e469a..f3c5cf70 100644
--- a/uview-ui/components/u-dropdown/u-dropdown.vue
+++ b/uview-ui/components/u-dropdown/u-dropdown.vue
@@ -143,9 +143,7 @@
 			// 引用所有子组件(u-dropdown-item)的this，不能在data中声明变量，否则在微信小程序会造成循环引用而报错
 			this.children = [];
 		},
-		mounted() {
-			this.getContentHeight();
-		},
+		
 		methods: {
 			init() {
 				// 当某个子组件内容变化时，触发父组件的init，父组件再让每一个子组件重新初始化一遍
@@ -172,6 +170,8 @@
 			},
 			// 打开下拉菜单
 			open(index) {
+				// 打开后才设置内容高度，以修复issue # 608
+				this.getContentHeight()
 				// 重置高亮索引，否则会造成多个菜单同时高亮
 				// this.highlightIndex = 9999;
 				// 展开时，设置下拉内容的样式
@@ -190,6 +190,8 @@
 			},
 			// 设置下拉菜单处于收起状态
 			close() {
+				// 收起的时候将高度设为0，以修复issue # 608
+				this.contentHeight = 0
 				this.$emit('close', this.current);
 				// 设置为收起状态，同时current归位，设置为空字符串
 				this.active = false;