Android realizes the function of manual signature after consumption of UnionPay card reader (example code)

A few days ago, I went to the property management to pay the property fee. The property management staff said that the community introduced high-tech products. After using the bank card for consumption, they didn't need to take a pen to sign on the UnionPay machine. They directly touched their fingers to realize the consumption signature. At that time, they thought that it was really high-tech. the shape of the machine is shown in the left figure below, and the signature is shown in the right figure below.

If you look carefully, it is actually a touch screen on which users directly sign manually. It is not complicated to realize this function. We customize a control, inherit the view, and use the drawLine and drawpoint methods of canvas to realize this function.

First, customize the control mdrawlineview

Layout XML code

Background BG_ drawline .xml

Activity code

summary

The above is what Xiaobian introduced to you. Android realizes the function of manual signature after consumption of UnionPay card reader. I hope it will be helpful to you. If you have any questions, please leave me a message and Xiaobian will reply to you in time. Thank you very much for your support for the programming tips website!