const that = this;

wx.canvasToTempFilePath({

x: 0,

y: 0,

canvasId: 'myCanvas',

success: function (res) {

wx.saveFile({

tempFilePath: res.tempFilePath,

success: function (res) {

const ctx = wx.createCanvasContext('allCanvas');

//正面

ctx.save();

ctx.drawImage(that.data.zimg, 85, 60, 128, 80);

ctx.restore();

ctx.drawImage(res.savedFilePath,85, 220, 128, 80);

ctx.draw();

}

})

}

});