手機端調用攝像頭拍照

時間 2019-12-02

標籤手機調用攝像頭拍照简体版

原文原文鏈接

　　　1.最簡單方法是input取圖像：這裏須要引導用戶進圖庫後直接拍照 mark-zhq[4]javascript

<input type="file" id="browseFile" onchange="" accept="images/*">
<input type="button" id="saveimg" value="保存圖片" />

　　　 2.調用navigator.getUserMedia方法：手機端--蘋果、安卓瀏覽器、微信瀏覽器都不支持，本人測的UC瀏覽器支持。navigator.getUserMedia瀏覽器支持狀況見：http://caniuse.mojijs.com/Home/Html/item/key/stream/index.htmlhtml

<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<video id="video" width="640" height="480" autoplay></video>
<button id="snap">Snap Photo</button>
<canvas id="canvas" width="640" height="480"></canvas>
<script type="text/javascript">
window.addEventListener("DOMContentLoaded", function() {
    var canvas = document.getElementById("canvas"),
        context = canvas.getContext("2d"),
        video = document.getElementById("video"),
        videoObj = { "video": true },
        errBack = function(error) {
            console.log("Video capture error: ", error.code); 
        };

    // 多瀏覽器兼容調用攝像頭
    if(navigator.getUserMedia) { // Standard
        navigator.getUserMedia(videoObj, function(stream) {
            video.src = stream;
            video.play();
        }, errBack);
    } else if(navigator.webkitGetUserMedia) { // WebKit-prefixed
        navigator.webkitGetUserMedia(videoObj, function(stream){
            video.src = window.webkitURL.createObjectURL(stream);
            video.play();
        }, errBack);
    }
    else if(navigator.mozGetUserMedia) { // Firefox-prefixed
        navigator.mozGetUserMedia(videoObj, function(stream){
            video.src = window.URL.createObjectURL(stream);
            video.play();
        }, errBack);
    }
}, false);
　　//截取圖像
document.getElementById("snap").addEventListener("click", function() {
    context.drawImage(video, 0, 0, 640, 480);
});
</script>
</body>
</html>

3.微信開發的能夠調用微信JS SDK接口java

wx.chooseImage({
    count: 1, // 默認9
    sizeType: ['original', 'compressed'], // 能夠指定是原圖仍是壓縮圖，默認兩者都有
    sourceType: ['album', 'camera'], // 能夠指定來源是相冊仍是相機，默認兩者都有
    success: function (res) {
        var localIds = res.localIds; // 返回選定照片的本地ID列表，localId能夠做爲img標籤的src屬性顯示圖片
    }
});

4.還有一種是經過jQuery.webcam去作，須要用戶安裝flash插件，請自行百度---jquery