Android Question User Claims that app cannot find bluetooth device after Android 12 Update

E

ema01

Member
Licensed User
Longtime User
More or less what's in the title..
An user claims he can't find and connect the to our bluetooth device using our app, after the Android 12 Update. Unfortunately we don't have and Android 12 device and from what we can see there is no "support" for android 12 yet in B4A (version 11.00)

I'm quick to blame google for new changes. I've looked through the google pages and i see that there are a bunch of (new?) different permissions regarding bluetooth: starting from android 12 i should use BLUETOOTH_SCAN, instead of ACCESS_FINE_LOCATION.

But we are not using SDK31 as of yet, so what google suggests is

does this mean that i just have to add android:maxSdkVersion to the app, compiler, upload, problem solved?
or does maxSdkVersion mean that i can't install the app if the SdkVersion is greater than max?

Rant: Sure it feels that every new version change things for the sake of us developers having to constantly update and redo our app instead of moving on to new things.
 
Sort by date Sort by votes

DonManfred

Expert
Licensed User
Longtime User

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...
www.b4x.com
 
Upvote 0
E

ema01

Member
Licensed User
Longtime User
-doesn't talk about maxsdkversion
-doesn't talk about android 12
so, you don't know?

https://developer.android.com/guide/topics/manifest/uses-sdk-element claims that maxSdkVersion won't allow the app to be installed in newer systems, while another documentation page recommends using maxSdkversion to keep using the older permission system.
 
Upvote 0
E

ema01

Member
Licensed User
Longtime User
Long story short,
the real issue in the end was in how we detect that location is active. We were using the "suggested" method around here, which is to use the phone library and check the content of "location_providers_allowed"
This setting has been finally removed in android 12 so to see if location is active one has to use a little bit of java.

if all is done inside and activity
B4X: 
#if JAVA
import android.location.LocationManager;
import android.content.Context;

public boolean isLocEnabled() {
    LocationManager locationManager = (LocationManager) this.getSystemService(this.LOCATION_SERVICE);
    return locationManager.isLocationEnabled();
}
#End If

Dim jo As JavaObject
jo.InitializeContext
if jo.RunMethod("isLocEnabled",Null) = true then
  ...
end if

there is also a library here on the forum that wraps LocationManager but i didn't want to bother adding it to the project just for this function
 
Upvote 0
You must log in or register to reply here.

Similar Threads

H
  • Question
Android Question 'The system cannot find the specified file' error after upgrade to version 12
Replies
1
Views
691
HugoSX2
H
M
  • Question
Android Question B4A 12 project compiling error
Replies
4
Views
1K
Mostez
M
B4A / B4J - No installation deployment
Replies
6
Views
6K
JohnC
  • Locked
  • Article
B4A Library NB6 - Notifications Builder
Replies
19
Views
33K
Erel
  • Question
Other Quiz #12 - Find the bug - Process & Activities life cycle
Replies
3
Views
10K
Erel
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…