Android Question biometric library error

[Alberto Michelis]

Using the lib and example of : https://www.b4x.com/android/forum/threads/biometricmanager-biometric-authentication.111256/
b4a 10.7 install from scratch, last SKD and so on...
Running on a S7
Pressing the Authenticate button...
Im getting the following error

** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
java.lang.NoSuchFieldError: No static field colorError of type I in class Landroidx/biometric/R$attr; or its superclasses (declaration of 'androidx.biometric.R$attr' appears in /data/app/b4a.example-Yv-9jn5OKLdjKgxHNQKoKw==/base.apk)
at androidx.biometric.FingerprintDialogFragment$Api26Impl.getColorErrorAttr(FingerprintDialogFragment.java:440)
at androidx.biometric.FingerprintDialogFragment.onCreate(FingerprintDialogFragment.java:161)
at androidx.fragment.app.Fragment.performCreate(Fragment.java:2685)
at androidx.fragment.app.FragmentStateManager.create(FragmentStateManager.java:280)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1187)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1368)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1446)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1509)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:447)
at androidx.fragment.app.FragmentManager.executeOps(FragmentManager.java:2181)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2004)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1959)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1861)
at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:413)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6944)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

How to solve this?
Thanks

 

[Alberto Michelis]

Thank you very much! it works!

 

[Sagenut]

Did you took the last example?
I removed one that was wrong.

 

[LucaMs]

As predicted I made something wrong.
The solution was to add

#Extends: android.support.v7.app.AppCompatActivity

even to the second Activity.

I found this right now:

The #Extends attribute allows you to change the parent class. The default value is Activity.

I thought that all the attributes (#) had "effect" at project level and therefore should always be written only in the Main.

Evidently it's not true (I also found a thread about services).

 

[Alberto Michelis]

This is weird but I had to add
#Extends: android.support.v7.app.AppCompatActivity
to all my modules because I realized that the activity title did not show
I think it is from the moment Ive add this to Main, dont know...

 

[LucaMs]

to all my modules

"modules"? I guess you are talking about Activities. You should "switch" to B4XPages!!!

 

[Alberto Michelis]

In my B4A 10.7 they are called Modules.
know nothing about B4XPages, need to study that.
this app is a really big one

 

[LucaMs]

In my B4A 10.7 they are called Modules.

All are called "modules", generically, but you can have:

- Activity modules
- Code modules
- Service modules

B4XPages are simpler to use than Activities. Less problems.