async private void BtnEnableFingerPrint_Clicked(object sender, EventArgs e)
{
//It doesn't support alternative authentication in Android.
bool allowAlternativeAuthentication = false;
var result = await CrossFingerprint.Current.IsAvailableAsync(allowAlternativeAuthentication);
if (result)
{
string reason = "Please place your finger on the finger print scanner.";
Plugin.Fingerprint.Abstractions.AuthenticationRequestConfiguration authenticationRequestConfiguration = new Plugin.Fingerprint.Abstractions.AuthenticationRequestConfiguration(reason);
authenticationRequestConfiguration.AllowAlternativeAuthentication = true; //use default alternative authentication, which is the device passcode.
try
{
var auth = await CrossFingerprint.Current.AuthenticateAsync(authenticationRequestConfiguration);
if (auth.Authenticated)
{
await DisplayAlert("Good!", "Authentication success", "OK");
}
else if (auth.Status == Plugin.Fingerprint.Abstractions.FingerprintAuthenticationResultStatus.Canceled)
{
//If user cancel it, do nothing. Do not show anything, User can clcik on try later.
await DisplayAlert("User clicked cancel", auth.Status.ToString(), "OK");
}
else if (auth.Status == Plugin.Fingerprint.Abstractions.FingerprintAuthenticationResultStatus.FallbackRequested)
{
await DisplayAlert("Fallback request", "User has the FP enroled. But request to fallback to alternative login method. ", "OK");
}
else
{
await DisplayAlert("Oops!", "Authentication failed" + auth.ErrorMessage, "OK");
}
}
catch (Exception ex)
{
await DisplayAlert("Oops!", "Exception!" + ex.Message, "OK");
}
}
else
{
await DisplayAlert("Sorry", "your device does not support Touch ID.", "OK");
}
}
private async void OnButtonClockClicked(object sender, EventArgs args)
{
// Checks if fingerprint authention is supported on the device, return a boolean value
var result = await CrossFingerprint.Current.IsAvailableAsync(true);
if (result)
{
var cancellationToken = new System.Threading.CancellationToken();
var reason = new Plugin.Fingerprint.Abstractions.AuthenticationRequestConfiguration("Fingerprint Authentication", "Please scan your fingerprints to confirm your identity");
var auth = await CrossFingerprint.Current.AuthenticateAsync(reason, cancellationToken);
if (auth.Authenticated)
{
ClockUser();
}
}
else
{
await DisplayAlert("Error", "Your device doesn't support fingerprint authentication", "OK");
}
}
