504 lines
10 KiB
Vue
504 lines
10 KiB
Vue
<template>
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<view class="scan-container">
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<view class="scan-header">
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<view class="back-btn" @click="goBack">
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<u-icon name="arrow-left" color="#fff" size="20"></u-icon>
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</view>
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<text class="scan-title">扫码</text>
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</view>
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<!-- 扫码区域 -->
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<view class="scan-content">
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<view class="scan-area">
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<!-- #ifdef APP-PLUS -->
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<view class="scanner" id="scannerId"></view>
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<!-- #endif -->
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<!-- H5和小程序平台使用通用提示 -->
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<!-- #ifndef APP-PLUS -->
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<view class="scan-placeholder">
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<text class="placeholder-text">点击下方按钮开始扫码</text>
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</view>
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<!-- #endif -->
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<view class="scan-frame">
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<view class="corner top-left"></view>
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<view class="corner top-right"></view>
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<view class="corner bottom-left"></view>
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<view class="corner bottom-right"></view>
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</view>
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</view>
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<text class="scan-tip">将二维码/条码放入框内，即可自动扫描</text>
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</view>
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<view class="scan-footer">
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<view class="album-btn" @click="selectFromAlbum">
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<u-icon name="photo" color="#fff" size="24"></u-icon>
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<text class="btn-text">相册</text>
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</view>
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<view class="scan-btn" @click="startScanCode">
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<u-icon name="scan" color="#fff" size="24"></u-icon>
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<text class="btn-text">扫码</text>
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</view>
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<view class="flashlight-btn" @click="toggleFlashlight">
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<u-icon :name="flashlightOn ? 'light-fill' : 'light'" color="#fff" size="24"></u-icon>
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<text class="btn-text">{{ flashlightOn ? '关闭' : '开启' }}手电筒</text>
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</view>
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</view>
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</view>
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</template>
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<script>
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export default {
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name: 'Scan',
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data() {
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return {
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flashlightOn: false,
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barcodeObj: null
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}
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},
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methods: {
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goBack() {
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// 关闭手电筒
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if (this.flashlightOn) {
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// #ifdef APP-PLUS
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plus.device.flashlight(false)
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// #endif
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}
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uni.navigateBack()
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},
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// 从相册选择二维码
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selectFromAlbum() {
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// #ifdef APP-PLUS
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plus.gallery.pick((e) => {
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this.scanImage(e.files[0])
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}, (e) => {
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console.log('取消选择图片')
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}, {
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filter: 'none',
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multiple: false,
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maximum: 1,
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system: false
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})
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// #endif
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// H5和小程序平台使用uni.chooseImage
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// #ifndef APP-PLUS
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uni.chooseImage({
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count: 1,
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success: (res) => {
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// 在H5和小程序平台，相册选择后无法直接识别二维码
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uni.showToast({
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title: '请选择扫码功能直接扫描二维码',
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icon: 'none'
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})
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}
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})
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// #endif
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},
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// 扫描图片中的二维码 (仅App)
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scanImage(path) {
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// #ifdef APP-PLUS
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plus.barcode.scan(path, (type, code) => {
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this.handleScanResult(type, code)
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}, (error) => {
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uni.showToast({
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title: '未识别到二维码',
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icon: 'none'
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})
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})
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// #endif
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},
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// 打开/关闭手电筒 (仅App)
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toggleFlashlight() {
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// #ifdef APP-PLUS
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this.flashlightOn = !this.flashlightOn
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plus.device.flashlight(this.flashlightOn)
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// #endif
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// #ifndef APP-PLUS
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uni.showToast({
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title: '该功能仅在App中可用',
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icon: 'none'
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})
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// #endif
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},
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// 处理扫码结果
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handleScanResult(type, code) {
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uni.showModal({
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title: '扫码结果',
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content: code,
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showCancel: true,
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confirmText: '确定',
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cancelText: '取消',
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success: (res) => {
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if (res.confirm) {
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console.log('用户点击确定')
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// 可以在这里处理扫码结果，比如跳转页面
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// uni.redirectTo({
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// url: '/pages/somepage?code=' + code
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// })
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} else if (res.cancel) {
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// 用户取消，继续扫码
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// #ifdef APP-PLUS
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this.startScan()
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// #endif
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}
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}
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})
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},
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// 开始扫码 (仅App)
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startScan() {
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// #ifdef APP-PLUS
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if (this.barcodeObj) {
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this.barcodeObj.start()
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}
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// #endif
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},
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// 停止扫码 (仅App)
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stopScan() {
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// #ifdef APP-PLUS
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if (this.barcodeObj) {
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this.barcodeObj.cancel()
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}
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// #endif
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},
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// 使用uni.scanCode进行扫码 (H5和小程序平台)
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startScanCode() {
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// #ifndef APP-PLUS
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uni.scanCode({
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success: (res) => {
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this.handleScanResult(res.scanType, res.result)
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},
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fail: (err) => {
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console.log('扫码失败', err)
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uni.showToast({
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title: '扫码失败，请重试',
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icon: 'none'
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})
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}
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})
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// #endif
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// #ifdef APP-PLUS
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// App平台仍然使用原生扫码
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this.startScan()
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// #endif
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},
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// 初始化扫码功能 (仅App)
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initScanner() {
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// #ifdef APP-PLUS
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const scanner = plus.barcode.Barcode
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this.barcodeObj = new scanner('scannerId',
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[scanner.QR, scanner.EAN13, scanner.EAN8, scanner.CODE128],
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{
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top: '0px',
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left: '0px',
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width: '100%',
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height: '100%',
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position: 'static'
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}
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)
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// 设置扫码成功回调
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this.barcodeObj.onmarked = (type, result) => {
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let code = result
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switch(type) {
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case scanner.QR:
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type = 'QR'
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break
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case scanner.EAN13:
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type = 'EAN13'
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break
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case scanner.EAN8:
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type = 'EAN8'
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break
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case scanner.CODE128:
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type = 'CODE128'
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break
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default:
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type = '其他'
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break
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}
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this.handleScanResult(type, code)
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}
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// 开始扫码
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this.barcodeObj.start()
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// #endif
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},
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// 检查并请求摄像头权限 (仅App)
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checkPermission() {
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// #ifdef APP-PLUS
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return new Promise((resolve, reject) => {
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// 判断是否已经授权
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plus.android.requestPermissions(['android.permission.CAMERA'],
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(resultObj) => {
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let result = 0;
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for (var i = 0; i < resultObj.granted.length; i++) {
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if (resultObj.granted[i] === 'android.permission.CAMERA') {
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result = 1
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}
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}
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for (var i = 0; i < resultObj.denied.length; i++) {
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if (resultObj.denied[i] === 'android.permission.CAMERA') {
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result = 0
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}
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}
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for (var i = 0; i < resultObj.alwaysDenied.length; i++) {
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if (resultObj.alwaysDenied[i] === 'android.permission.CAMERA') {
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result = -1
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}
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}
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if (result == 1) {
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resolve(true)
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} else {
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resolve(false)
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}
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},
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(error) => {
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resolve(false)
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}
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);
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})
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// #endif
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// #ifndef APP-PLUS
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return Promise.resolve(true)
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// #endif
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}
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},
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onLoad() {
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// #ifdef APP-PLUS
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// 页面加载时检查权限并初始化扫码功能
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this.checkPermission().then((authorized) => {
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if (authorized) {
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this.$nextTick(() => {
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// 使用定时器确保DOM渲染完成后再初始化扫码组件
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setTimeout(() => {
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this.initScanner()
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}, 100)
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})
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} else {
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uni.showModal({
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title: '权限申请',
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content: '需要摄像头权限才能使用扫码功能，是否前往设置开启权限？',
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success: (res) => {
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if (res.confirm) {
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// 跳转到系统设置页面
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if (plus.os.name === 'Android') {
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var Intent = plus.android.importClass("android.content.Intent");
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var Settings = plus.android.importClass("android.provider.Settings");
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var main = plus.android.runtimeMainActivity();
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var intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
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var uri = plus.android.invoke("android.net.Uri", "fromParts", "package", main.getPackageName(), null);
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intent.setData(uri);
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main.startActivity(intent);
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} else {
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plus.runtime.openURL("app-settings://");
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}
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} else {
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uni.navigateBack()
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}
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}
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})
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}
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})
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// #endif
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},
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onUnload() {
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// 页面卸载时关闭扫码和手电筒
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this.stopScan()
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if (this.flashlightOn) {
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// #ifdef APP-PLUS
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plus.device.flashlight(false)
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// #endif
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}
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},
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onHide() {
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// 页面隐藏时停止扫码
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this.stopScan()
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},
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onShow() {
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// 页面显示时重新开始扫码
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// #ifdef APP-PLUS
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this.$nextTick(() => {
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setTimeout(() => {
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this.startScan()
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}, 100)
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})
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// #endif
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}
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}
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</script>
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<style scoped>
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.scan-container {
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width: 100%;
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height: 100vh;
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background: #000;
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position: relative;
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}
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.scan-header {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 80rpx;
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padding: 60rpx 30rpx 30rpx;
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display: flex;
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align-items: center;
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z-index: 100;
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}
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.back-btn {
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width: 60rpx;
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height: 60rpx;
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border-radius: 50%;
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background: rgba(0, 0, 0, 0.5);
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.scan-title {
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flex: 1;
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text-align: center;
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color: #fff;
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font-size: 36rpx;
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margin-right: 60rpx;
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}
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.scan-content {
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width: 100%;
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height: 100%;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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padding-top: 120rpx;
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box-sizing: border-box;
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}
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.scan-area {
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width: 480rpx;
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height: 480rpx;
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position: relative;
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overflow: hidden;
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}
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/* #ifdef APP-PLUS */
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.scanner {
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width: 480rpx;
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height: 480rpx;
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position: absolute;
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top: 0;
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left: 0;
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z-index: 10;
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background: transparent;
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}
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/* #endif */
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.scan-placeholder {
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width: 100%;
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height: 100%;
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display: flex;
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align-items: center;
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justify-content: center;
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background: #333;
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}
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.placeholder-text {
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color: #fff;
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font-size: 28rpx;
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text-align: center;
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}
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.scan-frame {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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z-index: 20;
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}
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.corner {
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position: absolute;
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width: 40rpx;
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height: 40rpx;
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border: 4rpx solid #00ff00;
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}
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.top-left {
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top: 0;
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left: 0;
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border-right: none;
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border-bottom: none;
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}
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.top-right {
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top: 0;
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right: 0;
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border-left: none;
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border-bottom: none;
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}
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.bottom-left {
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bottom: 0;
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left: 0;
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border-right: none;
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border-top: none;
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}
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.bottom-right {
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bottom: 0;
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right: 0;
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border-left: none;
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border-top: none;
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}
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.scan-tip {
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color: #fff;
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font-size: 28rpx;
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margin-top: 60rpx;
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}
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.scan-footer {
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position: absolute;
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bottom: 100rpx;
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left: 0;
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width: 100%;
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display: flex;
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justify-content: space-around;
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z-index: 100;
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}
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.album-btn, .flashlight-btn, .scan-btn {
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display: flex;
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flex-direction: column;
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align-items: center;
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color: #fff;
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}
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.btn-text {
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margin-top: 10rpx;
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font-size: 24rpx;
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color: #fff;
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}
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</style> |