Show runtime error when BLE click scan

ma720207 · September 23, 2022, 7:09am

Hi All,

I'm developing with Andorid12 and I don't have any foundation.

I would like to ask what is the reason for this error when I scan with reference to other people's examples?

ChrisWard · September 23, 2022, 10:47am

Hello kai - welcome to the forum!

It seems that, the new version App Inventor nb190 does not add the "ACCESS_FINE_LOCATION" permission automatically. Try:

Snap3

Anke · September 23, 2022, 1:11pm

Show your (relevant) blocks and post the aia (or better a simple test aia).

ABG · September 23, 2022, 1:37pm

(added to FAQ)

ma720207 · September 23, 2022, 2:34pm

Hi ChrisWard,

Here I need to add?

This is my reference project
Android10BLETest_copy.aia (186.6 KB)

ma720207 · September 23, 2022, 2:34pm

Hi Anke,

This is my reference project
Android10BLETest_copy.aia (186.6 KB)

ma720207 · September 23, 2022, 2:36pm

Hi ABG,

Which one is something I can refer to, I have no idea

ma720207 · September 23, 2022, 2:47pm

Hi ChrisWard,

I try it,but it still fail.

Anke · September 23, 2022, 3:02pm

These 2 permissions are NOT declared in the Manifest:

If I declare them in the Manifest and build the APK, it works fine.

See also here.
@ewpatton

ma720207 · September 23, 2022, 3:16pm

Hi Anke,

Thanks a lot,but how can I declared them?

Can you teach me?

ABG · September 23, 2022, 4:10pm

Pardon me, I mistyped the required permission in my FAQ post. It should be
ACCESS_FINE_LOCATION

Note the underscores, and the all CAPS.

ChrisWard · September 23, 2022, 9:36pm

Hi kai

Here is an example Project:

BLE_RECEIVE_3_INTEGERS.aia (192.4 KB)

ChrisWard · September 23, 2022, 9:37pm

... because there are more Blocks to use, sorry - I have uploaded an example Project.

ChrisWard · September 23, 2022, 9:44pm

Hi again

Your test Project is not using the latest version of the BLE extension:

On my site:
https://www.professorcad.co.uk/appinventortips#TipsBluetooth

hieu123 · September 23, 2022, 10:17pm

hãy cho tôi một cách khắc phục

hieu123 · September 23, 2022, 10:21pm

Tôi đã thử với chính dự án của bạn và vấn đề đã xảy ra trên chính dự án của bạn ( bạn đã cập nhật lại app MIT AI2 Companion trên điện thoại của bạn chứ ?)

Anke · September 23, 2022, 10:24pm

Did you update the Companion app (2.65 or 2.65u)?

Anke · September 23, 2022, 10:25pm

Both permissions are declared in the Companion app (2.65 or 2.65u).

Taifun · September 23, 2022, 10:26pm

I'm using the latest version 2.65 and confirm this issue for the companion app... I'm currently in the process of updating my bluetooth extension...

Taifun

ChrisWard · September 23, 2022, 10:27pm

We can't see what else you may have or how the logic of your process flows, which makes a difference to the advice given. However, we have established that you may need to request 3 Bluetooth permissions - are you using the BLE extension? See my post #12.

Here is a way to request multiple permissions:
RequestMultiplePermissions.aia (188.3 KB)