From 3e0e40c844c3a10aca5cc0c87b18579122700b61 Mon Sep 17 00:00:00 2001
From: loulijun2021 <1694218219@qq.com>
Date: 星期二, 09 一月 2024 10:36:57 +0800
Subject: [PATCH] 1.新增APP升级接口对接2.列表页渲染速度优化

---
 pages/mjgl/mjwj.vue |  167 ++++++++++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 132 insertions(+), 35 deletions(-)

diff --git a/pages/mjgl/mjwj.vue b/pages/mjgl/mjwj.vue
index c4494c6..6f8db5b 100644
--- a/pages/mjgl/mjwj.vue
+++ b/pages/mjgl/mjwj.vue
@@ -3,46 +3,67 @@
 		<page-nav title="妯″叿澶栧��"></page-nav>
 
 
-		<view v-if="purchorderArrAll.length>0">
+		<!-- <view v-if="purchorderArrAll.length>0"> -->
 
 
-			<u-input prefixIcon="search" prefixIconStyle="font-size: 22px;color: #909399" placeholder="鎵弿妯″叿缂栫爜/杈撳叆妯″叿淇℃伅"
-				clearable border="surround" @clear='inputBoxValueClear' v-model="inputBoxValue"
-				@change="changeInputBoxValue">
-				<template slot="suffix">
-					<u-icon name="scan" color="#909399" size="24" @click="topScanClick"></u-icon>
-				</template>
-			</u-input>
+		<u-input prefixIcon="search" prefixIconStyle="font-size: 22px;color: #909399" placeholder="鎵弿妯″叿缂栫爜/杈撳叆妯″叿淇℃伅"
+			clearable border="surround" @clear='inputBoxValueClear' v-model="inputBoxValue"
+			@change="changeInputBoxValue">
+			<template slot="suffix">
+				<u-icon name="scan" color="#909399" size="24" @click="topScanClick"></u-icon>
+			</template>
+		</u-input>
 
 
 
-			<u-alert :title="'妯″叿鏁帮紙鍏�'+title+'涓級'" type="primary"></u-alert>
+		<u-alert :title="'妯″叿鏁帮紙鍏�'+title+'涓級'" type="primary"></u-alert>
 
-			<u-radio-group v-model="radioValue" iconPlacement="right" @change="radioValueClick" class="radioGroupClass">
-				<view v-for="(item,index) in purchorderArr" :key="item.code">
-					<!-- @click="radioValueClick(item.code)" -->
-					<view>
-						<u-radio activeColor="red" size="18" labelSize='16' :name='item.code'
-							:label="item.code+' ' + item.name +' '+item.spec "></u-radio>
+
+
+		<scroll-view class="container" scroll-y="true" @scroll="scroll">
+			<!-- 铏氭嫙鍒楄〃鎬婚珮搴� -->
+			<view :style="{'height': `${totalHeight}rpx`, 'position': 'relative'}">
+				<!-- 鍙娓叉煋鍖� -->
+				<view :style="{'top': `${top}px`}" style="width: 100%;position:absolute">
+					<!--鍦ㄨ繖閲岃嚜瀹氫箟浣犳暟鎹殑灞曠ず缁撴瀯鍜屾牱寮�,itemHeight涓鸿繖閲岀殑鎬婚珮搴�-->
+
+					<view class="radioGroupClass">
+						<view v-for="(item,index) in purchorderArr" :key="item.code" class="item">
+							<view @click="highlightClick(item.code)" :style="{color:selectedCode===item.code?'#fff':'#000',
+										background:selectedCode===item.code?'#3c9cff':'#fff'
+								}">
+
+								<view style="display: flex;">
+									<view style="width:60rpx;text-align: center;margin-right: 20rpx;">{{item.code}}
+									</view>
+									<view style="">{{item.name}}</view>
+									<view style="margin-left: 20rpx;">{{item.spec}}</view>
+
+								</view>
+
+							</view>
+						</view>
 					</view>
-					<u-line v-if="index!==purchorderArr.length-1" color="#2979ff"></u-line>
+
+
 				</view>
-			</u-radio-group>
-
-			<!-- <view style="height: 120rpx;"></view> -->
-
-			<view class="footer" style="min-height:62rpx;">
-				<u-button type="primary" size='large' :hairline="true" @click="navigateTo" text="涓嬩竴姝�"></u-button>
 			</view>
+		</scroll-view>
+
+
+
+		<view class="footer" style="min-height:62rpx;">
+			<u-button type="primary" size='large' :hairline="true" @click="navigateTo" text="涓嬩竴姝�"></u-button>
 		</view>
+		<!-- </view> -->
 
 
-		<view v-if="purchorderArrAll.length===0">
+		<!-- 	<view v-if="purchorderArrAll.length===0">
 			<div class="sacnBody">
 				<div class="boxImg"></div>
 				<div class="scanText">鏆傛棤妯″叿淇℃伅</div>
 			</div>
-		</view>
+		</view> -->
 
 	</view>
 </template>
@@ -54,7 +75,6 @@
 		ScanMouldQrCodeMessageSubData
 	} from '../../config/api.js';
 	export default {
-		onLoad(option) {},
 
 		onPullDownRefresh() {
 			setTimeout(() => {
@@ -71,12 +91,32 @@
 
 				title: 0,
 
-
-				radioValue: '',
-
 				purchorderArr: [],
 
-				purchorderArrAll: []
+				purchorderArrAll: [],
+
+				allList: [], //鍘熷鏁版嵁鍒楄〃
+				//铏氭嫙鍒楄〃
+				showList: [], //鍙鍖哄煙鏄剧ず鐨勬暟鎹�
+				itemHeight: 100, //姣忔潯鏁版嵁鎵�鍗犻珮搴�
+				showNum: 0, //鍙鍖哄煙鏄剧ず鐨勬渶澶ф潯鏁�
+				top: 0, //鍋忕Щ閲�
+				scrollTop: 0, //鍗疯捣鐨勯珮搴�
+				startIndex: 0, //鍙鍖哄煙绗竴鏉℃暟鎹殑绱㈠紩
+				endIndex: 0, //鍙鍖哄煙鏈�鍚庝竴鏉℃暟鎹殑绱㈠紩+1锛�
+
+				selectedCode: ''
+
+			}
+		},
+
+		onShow() {
+			//绗竴娆℃椂璋冪敤涓�涓�,涓攗ni.createSelectorQuery()闇�瑕佸湪鐢熷懡鍛ㄦ湡mounted涔嬪悗浣跨敤
+			// this.scroll()
+		},
+		computed: {
+			totalHeight() {
+				return this.allList.length * this.itemHeight * 2 //鍥犱负rpx鍜宲x鐨勫叧绯�
 			}
 		},
 		created() {
@@ -88,6 +128,49 @@
 			this.getScanMouldQrCodeMessageData()
 		},
 		methods: {
+
+			//铏氭嫙鍒楄〃
+			getShowList() {
+				//鍙鍖哄煙鑳藉嚭鐜扮殑鏁版嵁鏉℃暟
+				this.showNum = Math.ceil(this.contentHeight / this.itemHeight);
+				// console.log('鍙鏁伴噺', this.showNum)
+
+				//鍙鍖哄煙绗竴鏉℃暟鎹殑绱㈠紩
+				this.startIndex = Math.floor(this.scrollTop / this.itemHeight);
+				// console.log('鍒濆绱㈠紩',this.startIndex)
+
+				//鍙鍖哄煙鏈�鍚庝竴鏉℃暟鎹殑涓嬩竴鏉℃暟鎹�
+				this.endIndex = this.startIndex + this.showNum;
+
+				//鍙鍖烘暟鎹紝浼氭瘮瀹為檯鍙澶氭覆鏌撲竴鏉�		
+				this.showList = this.allList.slice(this.startIndex, this.endIndex)
+				// console.log(this.showList)
+
+				//淇濊瘉婊戝姩鏃剁涓�鏉℃暟鎹畬鏁村睍绀�
+				let offsetY = this.scrollTop - (this.scrollTop % this.itemHeight);
+
+				this.top = offsetY;
+			},
+			scroll() {
+				// 鍒╃敤uniapp鎻愪緵鐨勬帴鍙h幏鍙栧彲瑙嗗尯鍩熺殑楂樺害鍜屾粴鍔ㄩ珮搴�
+				let query = uni.createSelectorQuery()
+				let container = query.select('.container');
+				container.fields({
+					// rect:true,   //鏄惁杩斿洖鑺傜偣甯冨眬浣嶇疆淇℃伅{left,top,right,bottom}
+					size: true, //鏄惁杩斿洖鑺傜偣灏哄淇℃伅{width锛宧eight}
+					scrollOffset: true //鏄惁杩斿洖鑺傜偣婊氬姩淇℃伅{scrollLeft,scrollTop}
+				}, (res) => {
+					// console.log(res)
+					this.scrollTop = res.scrollTop
+					this.contentHeight = res.height
+					this.getShowList(); //鍥犱负鎵�鍦ㄥ嚱鏁版槸寮傛
+				}).exec()
+			},
+			highlightClick(code) {
+				this.selectedCode = code
+			},
+
+
 			init() {
 				uni.stopPullDownRefresh();
 			},
@@ -126,18 +209,16 @@
 				this.purchorderArr = this.purchorderArrAll.filter((p) => {
 					return p.code.indexOf(val) !== -1 || p.name.indexOf(val) !== -1 || p.spec.indexOf(val) !== -1
 				})
-				this.radioValue = this.purchorderArr[0].code
+				this.selectedCode = this.purchorderArr[0].code
 				this.$forceUpdate()
 			},
 			inputBoxValueClear() {
 				this.inputBoxValue = ''
 			},
-			radioValueClick(val) {
-				this.radioValue = val
-			},
+
 			navigateTo() {
 				uni.navigateTo({
-					url: './mjwj2?code=' + this.radioValue
+					url: './mjwj2?code=' + this.selectedCode
 				});
 			},
 			async getScanMouldQrCodeMessageData() {
@@ -149,7 +230,7 @@
 
 				this.title = res.data.length
 
-				this.radioValue = res.data[0].code
+				this.selectedCode = res.data[0].code
 
 			}
 		}
@@ -159,6 +240,22 @@
 <style lang="scss" scoped>
 	@import url('@/style/global.css');
 
+	.container {
+		width: 100%;
+		height: 70vh;
+		/*鍘熺敓涓�瀹氬緱鏈夎繖涓猳verflow鐨刪idden鏁堟灉,姝ゅ鐢ㄤ簡scroll-view鎵�浠ヤ笉闇�瑕�*/
+		/*overflow:auto;*/
+	}
+
+	.item {
+		/* 鎸夌収瀹為檯闇�姹傚啓css */
+		width: 100%;
+		height: 200rpx;
+		line-height: 90rpx;
+		/* 瑕佸搴斾笂itemHeight */
+		border: 1px solid #c8c8c8;
+	}
+
 	::v-deep .uicon-arrow-left>span {
 		display: block;
 	}

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