Android Question problems with 1D and 2D Barcode Scanner with ZBAR

[carycai]

i found 3 problems in my device:
1.why barcode scanner doesn't auto focus in my device,the image was so unclear,although it may decode the QR when camera closed.
2.barcode scanner get a wrong decode result in HUAWEI P10 plus, but OK in other device till now.I have no idea with it.
the QR code as attachment: qr.png
and the decode result as attachment:result.jpg
3.With mobile phone HUAWEI P10 Plus,even if there isn't qr in camera view,shake the phone,also can get a random result,see random_result.jpg.

I confuse. Appricate your help.

thanks in advance.