Android Question Using intent, broadcast receiver and SDK version

I suppose it has something to do with a certain permission? But which one?

we don't know what else your app does (beyond using a 3rd party api to
scan barcodes). we don't know how your scanner connects with your device.
you don't show your manifest. we also don't know why you picked sdk30 for
the upgrade? was there a reason for the particular jump? why even change if
sdk25 works? why stop at 30?

did you take a look at datawedge's documentation? i don't use datawedge or
zebra scanners, but i do think it appropriate to see what a software producer
might have to say about big switches. i looked; the documentation refers to all
sorts of issues of interest (at least to me) that might come into play when jumping
from sdk 25 to 30 with no stops in between. especially since datawedge itself
talks about its own many changes in the documentation.

runtime permissions came into play at sdk26. in most cases, "nothing" happens
if you ignore them. by that i mean "nothing" happens. but we don't know what is
supposed to happen, so we don't know if you ignored a runtime permission.

when you say, "nothing is received", are you talking about the intent? or the
scan results? or both? or something else? at some point the app presumably
starts, so that's something. at exactly what point does nothing start to happen.
do you know what that point is? are you logging each step in the process until
the messages stop coming?

I attached the complete project, please see scanner.zip.
this example is not using any 3rd party api's.

this is an test on the zebra tc21, works like the tc20, same problem.

also same problem on all other kind of scanners, using intent.
they all works with sdk25, none above.

problem: the customer gets at the installation the message the program is old.
they do not like this message.

nothing received, means no log in the Service_Start routine, when debugging.

maybe the intent needs a permission from sdk26, but i can't find this specific permission in the datawedge documentation.

before i take a look at the project, i wanted to ask if you were of aware of peter simpson's scanner library?
https://www.b4x.com/android/forum/t...laser-barcode-scanner-library.159185/#content

see the attached. these are all runtime permissions.

drgottjr said:

before i take a look at the project, i wanted to ask if you were of aware of peter simpson's scanner library?
https://www.b4x.com/android/forum/t...laser-barcode-scanner-library.159185/#content

see the attached. these are all runtime permissions.

Click to expand...

Yes, i tried this one. Has same problem, when only using receiver (intent) and not his library.
(library does not work for zebra tc20/21)