方法

/*** 选择上传照片* page_that:调用方法的页面，* cb_key:返回参数数组的名称* count:上传张数* 返回值：数组*/
function selecImg(page_that, cb_key, count) {console.log("选择图片");wx.chooseImage({count: count,sizeType: ['compressed'],sourceType: ['album', 'camera'],success: function(res) {console.log(res)var pathArray = [];var PicNums = res.tempFiles.length;for (var inta = 0; inta < PicNums; inta++) {var size = res.tempFiles[inta].size;var path = res.tempFiles[inta].path;var formatImage = path.split(".")[(path.split(".")).length - 1];console.log("图片格式" + formatImage)if (formatImage != "png" && formatImage != "jpg" && formatImage != "jpeg") {return wx.showToast({title: '只能上传.png、.jpg、.jpep 格式',icon: 'none',image: '',duration: 2000,mask: true,})}if (config.image_size < size) {return wx.showToast({title: '图片大小限制:' + (config.image_size / 1024 / 1024) + "MB",  ///config.image_size 配置文件中设置icon: 'none',image: '',duration: 1500,mask: true,})}pathArray.push(path);if (inta == PicNums-1) {var cb = {};cb[cb_key] = pathArray;page_that.setData(cb);}}}})
}

.wxml

<image src="../../Image/bg_pic1.png" mode='widthFix' style="width:100px" bindtap='Oncarm' data-whopic='idcard'></image>

.js 调用

Oncarm: function(e) {var whopic = e.currentTarget.dataset.whopic;/*** page_that:调用方法的页面，* cb_key:返回参数数组的名称,* count:上传张数,* 返回值：数组*/util.selecImg(this, whopic, 1);},