FingerprintSensor Extension

[Ken]

The .aia & .aix are in the first post.

[Ken]

I added the .aix to the first post.

[elmachi130]

aun funciona?
lo probé en samsung j7

saludos

[Taifun]

Does your device have a fingerprint sensor?
See also this topic

Crash on Android Login with Fingerprint caused by *INTERACT_ACROSS_USERS*

Taifun

[elmachi130]

no tengo ningún aplicativo con huellas dactilares será porque mi equipo ya es antiguo es un J7
de samsung probare con otro equipo que no este dentro de la lista mencionada

¡Lo extraño es que todos los bloqueos ocurren solo en dispositivos Samsung!

galaxia j7 57%
SM-J327P 9%
Galaxia A5 7%
SM-G532F 7%
Galaxia J5 1%
Galaxy S6 Borde 1%

saludos

[Taifun]

see this answer

Android Fingerprints: hasEnrolledFingerprints triggers exception on some Samsungs

it seems to be, a fix is necessary for Samsung devices

The Problem was caused by calling

fingerprintManager.hasEnrolledFingerprints()

I fixed it by adding a call to check for hardware before:

fingerprintManager.isHardwareDetected()
    && mFingerprintManager.hasEnrolledFingerprints()

Checking for fingerprints without the hardware available seems to cause this exception on some devices.

Taifun

[Soporte_NeoBook]

Moto G60s under Android 12.
all had worked fine before Android was updated to 12

I get this error message:

Runtime Error
Must have android.permission.USE_BIOMETRIC permision.: Neither user 10336 nor current process has android.permision.USE_BIOMETRIC.

Any ideas?

Thanks in advance,
David

[Taifun]

It looks like the extension needs an update... unfortunately @Ken is busy with real life...

As workaround you can modify the manifest and add the permission nanually...

Here is a guide

Target API level 31

Not really a "simple" solution: Build the APK. Decompile it. Edit the Manifest and add android:exported="true" to each <activity ... > and <receiver ... >. Set targetSdkVersion = 31. Recompile it. Check if the app (APK) can be installed on your test devices. If so, convert the APK to AAB: Convert APK TO AAB File - Guides - Niotron Community (otherwise check if you missed to add android:exported="true" to every <activity> and <receiver> and continue with step 4).

Taifun

[Soporte_NeoBook]

Thanks Taifun for your fast answer.

The Companion works like Frankenstein: every time i make changes it presents me with the dialog with the error, but then it resumes in the following processes.

Final program APK works fine.

Cheers, David

[Taifun]

@Soporte_NeoBook

Final program APK works fine.

then there is no issue...
the extension never worked together with the companion app

@Ken

Note:
Currently this extension is not able to run in the Companion so you'll need to build a .apk to use it.

Taifun

[poonam_jindal]

I want to ask that how to program this for having the same fingerprint as your phone lock screen and are these the blocks mentioned above or it is how to program it because all the yellow boxes are empty

[Taifun]

Try the example project from the first post of this thread to find out how to use the extension

Taifun

[poonam_jindal]

The blocks part is programming?

[poonam_jindal]

which one is the first post

[Taifun]

@poonam_jindal

the first post

FingerprintSensor Extension

DISCLAIMER: This extension wasn't created nor is it endorsed by App Inventor or MIT. This extension was created by me @Ken for the users of App Inventor and it's distributions to use free of charge. This Extension will allow you to use Fingerprint Authentication in your app. It requires Android OS 6.0 API23 or newer to run and of course a device with a Fingerprint Sensor. Note: Currently this extension is not able to run in the Companion so you'll need to build a .apk to use it. Special T…

Taifun

[Taifun]

@poonam_jindal

The blocks part is programming

A probably good idea would be to start with the tutorials...

A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook App Inventor 2 Book: Create Your Own Android Apps ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.
There is a free programming course here Course In A Box and the aia files for the projects in the book are here: App Inventor 2 Book: Create Your Own Android Apps
How to do a lot of basic things with App Inventor are described here: How do you...? .

Also do the tutorials http://appinventor.mit.edu/explore/ai2/tutorials.html to learn the basics of App Inventor, then try something and follow the Top 5 Tips: How to learn App Inventor

Taifun

---

Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.

[Pratham_Gokani]

@elmachi130

What's weird is that all of the crashes occur only on Samsung devices!

I'm facing the same issue. The extension is great, and works like a charm on all devices. Even Samsung devices THAT HAVE a built-in fingerprint sensor.

But only for those Samsung devices that do not have a built in fingerprint sensor, I'm getting the runtime error.

@Taifun

unfortunately @Ken is busy with real life...

The extension is really good, but this single bug is the reason why I can't use it in my app because I do not want Samsung users with phones not having the fingerprint sensor run into this error.

Hope @Ken fixes this one day!

[palaiologouiason]

I tried it, it works great.
Thanks