前端 - 用ionic开发的微信公众号，二维码图片长按时无法弹出“识别图中二维码”菜单

Question

公众号中有一个分享给他人的二维码页面，长按时不像其他地方的二维码一样能够弹出微信的菜单，请问一下有相关经验的前辈，这是什么原因？

是不是ionic本身禁止在页面上长按来进行选择复制等操作，所以在图片上面长按时也无法触发微信的相应行为？

知乎上有个同样的问题：http://www.zhihu.com/question/28150871

但是没有人回答T-T

Answer 1

The master in the team solved it:
Add an attribute to the img element of the QR code: data-tap-disabled: true
Ionic official document explains this attribute: http://ionicframework.com/docs/api/page/tap/

Answer 2

This is called tap hold event in jquery mobile. After searching, it seems to be called on-hold event in ionic. Try it and see if it’s right.

Answer 3

How do you use ionic to generate QR codes? I am encountering such a problem now!