【代码分享】H5里实现微信点击图片全屏预览预览效果，可双指缩放图片

mugeda.addEventListener("renderready", function(){

    var scene = mugeda.scene;

    window.checkuseragent = function(){

        var useragent = navigator.userAgent;  

        if (useragent.match(/MicroMessenger/i) != 'MicroMessenger') {  

            return false;

        }else{

            return true;

        }

    } 

    

    var picArr = ;

    window.getimgurl = function(){

        var max = 5; //这里的数字是需要按你自己图片的数量修改的

        var j;

        var picdom;

        for (i = 0; i < max; i++) {

            j = i+1;        

            picdom = scene.getObjectByName('pic'+j).dom;

            picArr.push(picdom.src);

        }

    }

    

    window.customview = function(){

        if(checkuseragent()){

            wx.previewImage({

                current: picArr[0],

                urls: picArr

            });

        }

        

    }

    

});