1. 优化支付宝小程序上this.$slots.$default的判断性

2. 优化dropdown可能错位的问题

manifest.json

@@ -2,7 +2,7 @@
     "name" : "uView",
     "appid" : "__UNI__60F4B81",
     "description" : "多平台快速开发的UI框架",
-    "versionName" : "1.7.1",
+    "versionName" : "1.7.2",
     "versionCode" : "100",
     "transformPx" : false,
     "app-plus" : {

pages.json

@@ -6,7 +6,7 @@
 	// 	"current": 0, //当前激活的模式(list 的索引项)
 	// 	"list": [{
 	// 		"name": "test", //模式名称
-	// 		"path": "pages/componentsB/dropdown/index", //启动页面，必选
+	// 		"path": "pages/componentsC/button/index", //启动页面，必选
 	// 		"query": "uuid=c4bba940-f69e-11ea-a419-6bafda9d095e&__id__=1" //启动参数，在页面的onLoad函数里面得到
 	// 	}]
 	// },

uview-ui/components/u-back-top/u-back-top.vue

@@ -6,7 +6,7 @@
 		zIndex: uZIndex,
 		opacity: opacity
 	}, customStyle]">
-		<view class="u-back-top__content" v-if="!$slots.default">
+		<view class="u-back-top__content" v-if="!$slots.default && !$slots.$default">
 			<u-icon @click="backToTop" :name="icon" :custom-style="iconStyle"></u-icon>
 			<view class="u-back-top__content__tips">
 				{{tips}}

uview-ui/components/u-dropdown-item/u-dropdown-item.vue

 <template>
 	<view class="u-dropdown-item" v-if="active" @touchmove.stop.prevent="() => {}" @tap.stop.prevent="() => {}">
-		<block v-if="!$slots.default">
+		<block v-if="!$slots.default && !$slots.$default">
 			<scroll-view scroll-y="true" :style="{
 				height: $u.addUnit(height)
 			}">

uview-ui/components/u-line-progress/u-line-progress.vue

@@ -9,7 +9,7 @@
 			striped ? 'u-striped' : '',
 			striped && stripedActive ? 'u-striped-active' : ''
 		]" class="u-active" :style="[progressStyle]">
-			<slot v-if="$slots.default" />
+			<slot v-if="$slots.default || $slots.$default" />
 			<block v-else-if="showPercent">
 				{{percent + '%'}}
 			</block>

uview-ui/components/u-modal/u-modal.vue

@@ -5,7 +5,7 @@
 			<view class="u-model">
 				<view v-if="showTitle" class="u-model__title u-line-1" :style="[titleStyle]">{{ title }}</view>
 				<view class="u-model__content">
-					<view :style="[contentStyle]" v-if="$slots.default">
+					<view :style="[contentStyle]" v-if="$slots.default  || $slots.$default">
 						<slot />
 					</view>
 					<view v-else class="u-model__content__message" :style="[contentStyle]">{{ content }}</view>

uview-ui/components/u-slider/u-slider.vue

@@ -15,7 +15,7 @@
 			<view class="u-slider__button-wrap" @touchstart="onTouchStart" 
 				@touchmove="onTouchMove" @touchend="onTouchEnd" 
 				@touchcancel="onTouchEnd">
-				<slot v-if="$slots.default"/>
+				<slot v-if="$slots.default  || $slots.$default"/>
 				<view v-else class="u-slider__button" :style="[blockStyle, {
 					height: blockWidth + 'rpx',
 					width: blockWidth + 'rpx',

uview-ui/components/u-tabbar/u-tabbar.vue

@@ -120,9 +120,9 @@
 		},
 		data() {
 			return {
-				// 由于安卓太菜了，通过css居中凸起按钮的外层元素有误差，故通过js计算将其其中
+				// 由于安卓太菜了，通过css居中凸起按钮的外层元素有误差，故通过js计算将其居中
 				midButtonLeft: '50%',
-				pageUrl: '', // 当前
+				pageUrl: '', // 当前页面URL
 			}
 		},
 		created() {

uview-ui/libs/config/config.js

-// 此版本发布于2020-09-17
-let version = '1.7.1';
+// 此版本发布于2020-09-21
+let version = '1.7.2';
 
 export default {
 	v: version,

uview-ui/package.json

 {
 	"name": "uview-ui",
-	"version": "1.7.1",
+	"version": "1.7.2",
 	"description": "uView UI，是uni-app生态优秀的UI框架，全面的组件和便捷的工具会让您信手拈来，如鱼得水",
 	"main": "index.js",
 	"keywords": ["uview", "uView", "uni-app", "uni-app ui", "uniapp", "uviewui", "uview ui", "uviewUI", "uViewui", "uViewUI", "uView UI", "uni ui", "uni UI", "uniapp ui", "ui", "UI框架", "uniapp ui框架", "uniapp UI"],