BLE beacon extension causes the app to crash with "Failed resolution of: Landroid/support/v4/content/LocalBroadcastManager"

Open Source Development Extension Development
1

I developed an extension using the "Android Beacon Library" and the new "@UsesServices" annotation for defining some services in AndroidManifest.xml.

  1. If I import the extension in a Kodular test app the @UsesServices is disregarded, I must manually modify the AndroidManifest.xml and the test app runs OK.

  2. If I import the same extension in a similar MIT appinventor test app the @UsesServices is handled correctly (the AndroidManifest.xml is OK) but the app crashes immediately with the runtime error "Failed resolution of: Landroid/support/v4/content/LocalBroadcastManager"

I know that Kodular is not able of handling the new annotations so far, but I don't understand the reason for crashing the app with MIT appinventor.

Some suggestions ?

2

yes, because Kodular does neither support the new annotations nor the AndroidX library up to now...

you will have to import the AndroidX library, which is

import androidx.localbroadcastmanager.content.LocalBroadcastManager;

Taifun

2 Likes
3

Thank you Taifun for your hint.
I tried to insert the import you suggested in the extension Java code but this doesn't solve the problem on MIT appinventor.
As soon as I launch the test app (including the new generated extension) it crashes with the same error "Failed resolution of: Landroid/support/v4/content/LocalBroadcastManager".
I'm afraid this problem is due to the MIT appinventor platform as it doesn't happen with Kodular

4

which means, you are still using somewhere the old Android support library instead of the new AndroidX library

Taifun

2 Likes
5

Perhaps the AltBeacon library is using the old Android support library. I will try to use a more recent version of that library

6

OK - I solved the problem with MIT appinventor rebuilding my extension with the newest version of AltBeacon library (2.17.1)

1 Like
7

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