actionPrintText will append 'U@' at the beginning

[c19354837]

Description

Your device where the bug occurs

• Device: Redmi K40
• OS: Hyper OS 23.12.6
• Browser: /
• Version /

Your printer

• Model Names: STP 7002️⃣
• Firmware Version: unkonw
• Interface: Ethernet

Your development environment

The result of executing the command ver on Windows, sw_vers on macOS, uname –a on Linux, or these equivalent commands.

To Reproduce

Steps to reproduce the behavior:

1. run the demo
2. comment the logo print
3. click print

Expected behavior

without 'U@'

[Tatsuki-Yamamoto2731]

@c19354837 We have never evaluated our software on Xiaomi HyperOS, therefore, I think it is difficult for us to recreate the problem on our side. So, I would like to confirm more information about this issue.

My understanding: On Xiaomi HyperOS, when a logo is added on the top of a receipt, there will be no problem. However, when a logo is NOT added on the top of a receipt, 'U@' will be printed at the beginning, and "styleAlignment(Alignment.Center)" will not work.

My understanding is correct?

And regarding your photo, "without logo" receipt is created by removed (commented out) "actionPrintImage()" intentionally?

[c19354837]

@Tatsuki-Yamamoto2731 Yes, the align is OK, just the 'U@' is wired. Remove PrintingActivity.kt#L92 , 'U@' will come out.

I've tested in other devices, get same result:

[Tatsuki-Yamamoto2731]

@c19354837 Thank you for your answer. It seems that the issue is caused on various Android-based OS. Maybe it is related to printer settings. Then, could you please do self-printing and take the photo? From self-printing, you can see printer setting information.

How to do self-printing: Turn the power ON, while holding down the switch, with the cover closed.

[Tatsuki-Yamamoto2731]

Not updated for more than 3 months, therefore I closed this issue. If you still have the same issue, please reopen this issue.