Android Question bluetooth devices

[Mr Blue Sky]

bluetooth application no longer works with Android10 & B4A 9.90
I downloaded the two examples Bluetooth "Chat" and Bluetooth "Chat" with B4XPages.

I get the same error at
Dim success As Boolean = Starter.Manager.SearchForDevices
"Error starting discovery process"

bluetooth demo applications work well with versions lower than 9 on Sony, Huawai, Samsung

if someone encountered the same problem and have a solution, i have the permissions in the Android manifest

 

[Star-Dust]

see this:

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

SDK 29 - BluetoothAdmin.StartDiscovery and BLEManager.StartScan require the ACCESS_FINE_LOCATION permission. Previously the COARSE location was enough.

 

[Mr Blue Sky]

Thanks for your help
as I said, it seems to me that I have already done so

see this:

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

SDK 29 - BluetoothAdmin.StartDiscovery and BLEManager.StartScan require the ACCESS_FINE_LOCATION permission. Previously the COARSE location was enough.

 

[Star-Dust]

Thanks for your help
as I said, it seems to me that I have already done so

I see you have entered it several times. I don't know what it could be.

Try TargetSDK at 29

 

[Mr Blue Sky]

I see you have entered it several times. I don't know what it could be.

Try TargetSDK at 29

yes it was already at 29 at the beginning, I did a test with TargetSDK at 30 and android.jar-30 to see and i send a screenshot error

I am with AddManifestText(
<uses-sdk android:minSdkVersion="26" android:targetSdkVersion="29"/>

I specify that I have a Huawei P40 5G and a Samsung S20 identical problem. a priori very specific to Android 10

I deleted
AddPermission (android.permission.ACCESS_COARSE_LOCATION)

and leave that
AddPermission (android.permission.ACCESS_FINE_LOCATION)

That changes nothing

 

[DonManfred]

as I said, it seems to me that I have already done so

Is is not enough to put the permission in manifest. You need to use Runtimepermission and REQUEST it at Runtime.

 

[Mr Blue Sky]

Is is not enough to put the permission in manifest. You need to use Runtimepermission and REQUEST it at Runtime.

yes i know thank too don

like i said, it would work fine before Android 10.

I added a manifest and execution authorization
AddManifestText (<uses-permission android: name = "android.permission.ACCESS_FINE_LOCATION" />)
and keep
AddManifestText (<uses-permission android: name = "android.permission.ACCESS_COARSE_LOCATION" />)

 

[Mr Blue Sky]

Thank you very much Don Manfred and Star-Dust for the help to bring, I found my problem, I dare not even say it as I am ashamed ;-)

all works like before !

 

[rraswisak]

its good to tell us what is the problem and how you resolve it - so it would be useful for other who came with same problem

 

[Mr Blue Sky]

its good to tell us what is the problem and how you resolve it - so it would be useful for other who came with same problem

Yes, you're right,

But it won't bring anything, it was just a variable error
once I call it connection, and the second time connected

What I find difficult to understand is that, however, with previous versions of Android, it still works when it shouldn't have

 

[Star-Dust]

Thank you very much Don Manfred and Star-Dust for the help to bring, I found my problem, I dare not even say it as I am ashamed ;-)

all works like before !

wonderful

 

[MbedAndroid]

may be not related to your problem, but i encountered same issue. Google made a update for the Covid-19 and BT in april/ma. After updating my tablet i couldnt enable BT anymore. The slider stays gray. Factory reset and disabling google updates solved the problem. Dont know this is a general issue, but worth the mention it here.
Used tablet was Chuwi H8 with android 8.1