CODEWITHSUNDEEP
androidandroid-biometric-prompt
Mangesh Kadam
Mangesh Kadam

Reputation: 587

java.lang.IllegalStateException error in BiometricPrompt.authenticate

I am using androidx.biometric:biometric:1.0.0-alpha04 library in my project. But I could see many crashes in crashlytics as well as play-store when I am trying to authenticate using BiometricPrompt. Crash happens at below code

myBiometricPrompt.authenticate(promptInfo, mcryptoObject!!)

Below is the stack trace from crashlytics

Fatal Exception: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
   at androidx.fragment.app.FragmentManagerImpl.checkStateLoss(FragmentManagerImpl.java:2080)
   at androidx.fragment.app.FragmentManagerImpl.enqueueAction(FragmentManagerImpl.java:2106)
   at androidx.fragment.app.BackStackRecord.commitInternal(BackStackRecord.java:683)
   at androidx.fragment.app.BackStackRecord.commit(BackStackRecord.java:637)
   at androidx.fragment.app.DialogFragment.show(DialogFragment.java:144)
   at androidx.biometric.BiometricPrompt.authenticateInternal(BiometricPrompt.java:499)
   at androidx.biometric.BiometricPrompt.authenticate(BiometricPrompt.java:452)
   at com.transfast.transfast.biometric.BiometricHelper$startAuth$2.run(BiometricHelper.java:132)
   at android.os.Handler.handleCallback(Handler.java:790)
   at android.os.Handler.dispatchMessage(Handler.java:99)
   at android.os.Looper.loop(Looper.java:164)
   at android.app.ActivityThread.main(ActivityThread.java:7000)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)

Upvotes: 3

Views: 1634

Answers (1)

Wes Johnson
Wes Johnson

Reputation: 3101

We found we could resolve this by explicitly checking for whether the current activity is in the resumed state:

FragmentActivity activity = ((FragmentActivity) activity);
Lifecycle lifecycle = activity.getLifecycle();
Lifecycle.State lifecycleState = lifecycle.getCurrentState();
if (lifecycleState != Lifecycle.State.RESUMED) {
    // don't
    return;
}

BiometricPrompt biometricPrompt = new BiometricPrompt(activity, mExecutor, callback);
biometricPrompt.authenticate(promptInfo);

it has to be RESUMED specifically, because STARTED can still allow the call to happen after onSaveInstanceState

See https://developer.android.com/topic/libraries/architecture/lifecycle

Upvotes: 1

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