初始化（包含登录模块）

pages/API/scan-code/scan-code.vue

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+<template>
+	<view>
+		<page-head :title="title"></page-head>
+		<view class="uni-padding-wrap uni-common-mt">
+			<view class="uni-title">扫码结果：</view>
+			<view class="uni-list" v-if="result">
+				<view class="uni-cell">
+					<view class="scan-result">
+						{{result}}
+					</view>
+				</view>
+			</view>
+			<view class="uni-btn-v">
+				<button type="primary" @click="scan">扫一扫</button>
+			</view>
+		</view>
+	</view>
+</template>
+<script>
+	import permision from "@/common/permission.js"
+	export default {
+		data() {
+			return {
+				title: 'scanCode',
+				result: ''
+			}
+		},
+		methods: {
+			async scan() {
+				// #ifdef APP-PLUS
+				let status = await this.checkPermission();
+				if (status !== 1) {
+				    return;
+				}
+				// #endif
+				uni.scanCode({
+					success: (res) => {
+						this.result = res.result
+					},
+					fail: (err) => {
+						// 需要注意的是小程序扫码不需要申请相机权限
+					}
+				});
+			}
+			// #ifdef APP-PLUS
+			,
+			async checkPermission(code) {
+				let status = permision.isIOS ? await permision.requestIOS('camera') :
+					await permision.requestAndroid('android.permission.CAMERA');
+
+				if (status === null || status === 1) {
+					status = 1;
+				} else {
+					uni.showModal({
+						content: "需要相机权限",
+						confirmText: "设置",
+						success: function(res) {
+							if (res.confirm) {
+								permision.gotoAppSetting();
+							}
+						}
+					})
+				}
+				return status;
+			}
+			// #endif
+		}
+	}
+</script>
+
+<style>
+	.scan-result {
+		min-height: 50rpx;
+		line-height: 50rpx;
+	}
+</style>