How can I implement Biometric API in Android?

Question

I want to use biometrics or password to lock/unlock images in my app. Biometric API can detect the biometrics but the "use password" option take the device's pin/password. I want the user to enter a password in-app and any password he wants.

Answer 1

I used the negative button. I set the text of negative button to "Use Password" and handled the negative button onclick in the onAuthenticationError callback method.

if (errorCode == BiometricPrompt.ERROR_NEGATIVE_BUTTON) {
    //show the in app password dialog
}