之前的API已经不能用了哦，这是最新的

var query = wx.createSelectorQuery();

query.select('.getwidth').boundingClientRect(function (rect) {

var context = wx.createContext('customCanvas');

var scale = that.data.scale;

var lefttext = 35 * scale;

var radius = 240 * scale;

//下载医生图片到本地

wx.downloadFile({

// url: doctor.headImg,

url: img_path + 'doctor.jpg',

success: function (res) {

//下载二维码到本地

wx.downloadFile({

url: img_path + 'cardewm.jpg',

success: function (erweima) {

//白色背景

context.rect(0, 0, 750 * scale, 480 * scale)

context.setFillStyle('#fff')

context.setStrokeStyle("#fff");

context.fill()

//绘制颜色块

context.beginPath();

context.setFillStyle("#fff");

context.setStrokeStyle("#97ccff");

context.rect(0, 316 * scale, Math.round(rect.width) + 5, 24)

context.fill()

context.stroke()

//绘制颜色块

context.beginPath();

context.setFillStyle("#97ccff");

context.setStrokeStyle("#97ccff");

context.rect(0, 270 * scale, Math.round(rect.width) + 5, 24)

context.fill()

context.stroke()

//绘制医院名

context.setFontSize(26);

context.setFillStyle('#333');

context.font = 'normal  20rpx sans-serif';

context.fillText(doctor.hospitalName, 0, 130 * scale);

context.stroke();

//绘制医生名

context.setFontSize(28);

context.setFillStyle('#96ccff');

context.fillText(doctor.name, 0, 212 * scale);

context.stroke();

//绘制科室

context.setFontSize(16);

context.setFillStyle('#fff');

// context.fillText(doctor.section, 15 * scale, 371 * scale);

context.fillText('耳鼻喉科', 15 * scale, 308 * scale);

context.stroke();

//绘制职称

context.setFontSize(16);

context.setFillStyle('#97ccff');

// context.fillText(doctor.jobTitle, 15 * scale, 371 * scale);

context.fillText('主任医师', 15 * scale, 354 * scale);

context.stroke();

//绘制二维码小图标

context.drawImage(erweima.tempFilePath, 0, 390 * scale, 144 * scale, 49 * scale);

//绘制医生图片

context.setStrokeStyle('rgba(0,0,0,0)')

context.save()

context.beginPath()

context.arc(550 * scale, 240 * scale, radius, 0, Math.PI * 2, false);

context.clip()

context.drawImage(res.tempFilePath, 310 * scale, 0, radius * 2, radius * 2);

context.restore()

//绘制英文 SAMRT MEDICAL CARE.

context.setFillStyle('#ccc');

context.setFontSize(22);

context.fillText('SAMRT MEDICAL CARE.', 0, 53 * scale);

context.stroke();

context.save();

context.draw(true)

// 配置分享名片

wx.drawCanvas({

canvasId: 'customCanvas',

actions: context.getActions(),

});

wx.canvasToTempFilePath({

你写错了吧。。代码看看呢。。看不到代码。不知道你错哪里