149 lines
4.5 KiB
HTML
149 lines
4.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no">
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<title>扫码</title>
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<style>
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* { margin: 0; padding: 0; box-sizing: border-box; }
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html, body { width: 100%; height: 100%; overflow: hidden; background: #000; }
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#scanner-container {
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position: fixed;
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top: 0; left: 0;
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width: 100%; height: 100%;
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background: #000;
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}
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#scanner-container video {
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width: 100% !important;
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height: 100% !important;
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object-fit: cover;
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position: absolute;
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top: 0; left: 0;
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}
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#scanner-container canvas { display: none !important; }
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.close-btn {
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position: fixed; top: 30px; left: 15px;
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width: 40px; height: 40px;
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border-radius: 50%;
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background: rgba(255,255,255,0.2);
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display: flex; align-items: center; justify-content: center;
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z-index: 9999;
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color: #fff; font-size: 22px;
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}
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.tip {
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position: fixed; bottom: 60px; left: 0; right: 0;
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text-align: center; z-index: 9999;
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}
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.tip-text {
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display: inline-block;
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color: #fff; font-size: 14px;
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background: rgba(0,0,0,0.5);
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padding: 6px 16px; border-radius: 20px;
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}
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.loading {
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position: fixed; top: 50%; left: 50%;
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transform: translate(-50%, -50%);
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color: #fff; font-size: 14px; z-index: 9999;
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text-align: center;
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}
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</style>
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</head>
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<body>
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<div id="scanner-container"></div>
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<div class="close-btn" id="closeBtn">✕</div>
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<div class="tip"><span class="tip-text" id="tipText">对准条码自动识别</span></div>
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<div class="loading" id="loadingText">正在启动摄像头...</div>
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<script src="../js/quagga.min.js"></script>
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<script>
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var detected = false;
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var tipText = document.getElementById('tipText');
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var loadingText = document.getElementById('loadingText');
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function sendToApp(action, code) {
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// UniApp WebView postMessage
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if (window.uni && window.uni.postMessage) {
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window.uni.postMessage({ data: { action: action, code: code || '' } });
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}
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// fallback: 5+ webview API
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if (window.plus && window.plus.webview) {
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var wv = plus.webview.currentWebview();
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if (wv && wv.postMessageToParent) {
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wv.postMessageToParent({ action: action, code: code || '' });
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}
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}
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}
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function closeCamera() {
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try { Quagga.stop(); } catch(e) {}
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sendToApp('close');
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}
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document.getElementById('closeBtn').addEventListener('click', closeCamera);
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function startQuagga() {
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if (typeof Quagga === 'undefined') {
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loadingText.innerText = '加载解码库失败';
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return;
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}
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Quagga.init({
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inputStream: {
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name: 'Live',
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type: 'LiveStream',
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target: document.querySelector('#scanner-container'),
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constraints: {
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width: 640, height: 480, facingMode: 'environment'
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}
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},
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decoder: {
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readers: ['ean_reader', 'ean_8_reader', 'upc_reader', 'code_128_reader', 'code_39_reader'],
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debug: false
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},
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locator: { halfSample: false, patchSize: 'large' },
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numOfWorkers: 2,
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frequency: 5
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}, function(err) {
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if (err) {
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loadingText.innerText = '摄像头启动失败，请检查权限';
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console.error('Quagga error:', err);
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return;
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}
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loadingText.style.display = 'none';
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Quagga.start();
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// 启动成功后定期检查有没有画面
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setTimeout(function() {
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var video = document.querySelector('#scanner-container video');
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if (video && video.videoWidth > 0) {
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console.log('Camera OK:', video.videoWidth, 'x', video.videoHeight);
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} else {
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console.warn('Camera may not have started');
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}
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}, 2000);
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});
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}
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Quagga.onDetected(function(result) {
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if (detected) return;
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var code = result && result.codeResult && result.codeResult.code;
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if (!code) return;
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code = code.replace(/\D/g, '');
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if (code.length >= 10 && code.length <= 14) {
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detected = true;
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tipText.innerText = '识别成功';
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try { Quagga.stop(); } catch(e) {}
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setTimeout(function() {
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sendToApp('scanned', code);
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}, 300);
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}
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});
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// 启动
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if (document.readyState === 'complete') {
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startQuagga();
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} else {
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window.addEventListener('load', startQuagga);
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}
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</script>
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</body>
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</html>
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