public FingerprintDialog(DialogConfiguration dialogConfiguration, FingerprintManagerCompat.AuthenticationCallback authenticationCallBack, Android.Support.V4.OS.CancellationSignal fingerprintCancellationSignal)
{
_dialogConfiguration = dialogConfiguration;
_authenticationCallBack = authenticationCallBack;
_fingerprintCancellationSignal = fingerprintCancellationSignal;
((AuthenticationCallBack)_authenticationCallBack).SetFingerprintDialog(this);
}
private async void Button_Clicked(object sender, EventArgs e)
{
var dialogConfig = new Plugin.XF.TouchID.DialogConfiguration(dialogTitle: "Sign In", //Display in Android only
dialogDescritpion: "Detect you biometic to auth", //Display on Android and iOS(TouchID)
successAction: () =>
{
//Will fired when authentication success
Device.BeginInvokeOnMainThread(() =>
{
DisplayAlert("Congratulation", "You pass the authentication", "OK");
});
},
alterAuthButtonText: "Use PIN", //Display in Android only
fingerprintDialogConfiguration: new Plugin.XF.TouchID.FingerprintDialogConfiguration
{
//For Android 6-8 only
FingerprintHintString = "Touch Sensor",
FingerprintNotRecoginzedString = "Not regonized"
},
failedAction: () =>
{
//For Android 6-8 only
Device.BeginInvokeOnMainThread(() =>
{
DisplayAlert("Alert", "Too many unsuccessful attempt, please try again later", "OK");
});
});
await Plugin.XF.TouchID.TouchID.Authenticate(dialogConfig);
}
public static async System.Threading.Tasks.Task Authenticate(DialogConfiguration dialogConfiguration)
{
_context = new LAContext();
_context.InvokeOnMainThread(async() =>
{
var result = await _context.EvaluatePolicyAsync(LAPolicy.DeviceOwnerAuthentication, Configuration.DefaultFailAttemptNumberExceededMsg);
bool success = result.Item1;
NSError error = result.Item2;
if (success)
{
dialogConfiguration.SuccessAction?.Invoke();
}
else
{
if (error.Code == -2)
{
//user cancel
return;
}
else if (error.Code == -1)
{
//too many failed attempt
dialogConfiguration.FailedAction?.Invoke();
}
}
});
//NSError AuthError;
//if (_context.CanEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, out AuthError))
//{
// Tuple<bool, NSError> result = await _context.EvaluatePolicyAsync(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, dialogConfiguration.DialogDescription);
// bool success = result.Item1;
// NSError error = result.Item2;
// if (result.Item1 == true)
// dialogConfiguration.SuccessAction?.Invoke();
// else
// {
// if (error.Code == -2)
// {
// //User cancel
// return;
// }else if(error.Code == -1)
// {
// }
// //if (error.LocalizedDescription == "Fallback authentication mechanism selected.")
// //{
// // var s = error.Code;
// // result = await _context.EvaluatePolicyAsync(LAPolicy.DeviceOwnerAuthentication, descrptionMessage);
// // if (result.Item1)
// // successAction?.Invoke();
// //}
// }
//}
//else
//{
// _context.InvokeOnMainThread(async () =>
// {
// var result = await _context.EvaluatePolicyAsync(LAPolicy.DeviceOwnerAuthentication, Configuration.DefaultFailAttemptNumberExceededMsg);
// if (result.Item1)
// dialogConfiguration.SuccessAction?.Invoke();
// });
//}
}
public static async System.Threading.Tasks.Task Authenticate(DialogConfiguration dialogConfiguration)
{
//Android 10+ Q SdkInt 29+
if ((int)Build.VERSION.SdkInt >= 29)
{
CancellationSignal BiometricCancellationSignal = new CancellationSignal();
//Android 10
BiometricCancellationSignal = new CancellationSignal();
BiometricPrompt biometricPrompt;
if (dialogConfiguration.IsUseAlternativeAuthentication)
{
//Allow using PIN / Passcode as alternative, will disable crypto in authentication
biometricPrompt = new BiometricPrompt
.Builder(Configuration.CurrentActivity)
.SetTitle(dialogConfiguration.DialogTitle)
.SetDescription(dialogConfiguration.DialogDescription)
.SetDeviceCredentialAllowed(true)
.Build();
}
else
{
biometricPrompt = new BiometricPrompt
.Builder(Configuration.CurrentActivity)
.SetTitle(dialogConfiguration.DialogTitle)
.SetDescription(dialogConfiguration.DialogDescription)
.SetNegativeButton(dialogConfiguration.AlternativeActionMessage, Configuration.CurrentActivity.MainExecutor, new NegativeButtonOnClickListener(() =>
{
BiometricCancellationSignal.Cancel();
dialogConfiguration.AlternativeAction?.Invoke();
}))
.Build();
}
BiometricPrompt.AuthenticationCallback authenticationCallback = new BiometricAuthenticationCallback();
AuthenticationResult = null;
AuthenticationResult = (arg) =>
{
string result = arg;
if (arg == SystemMessages.Success)
{
BiometricCancellationSignal.Cancel();
dialogConfiguration.SuccessAction?.Invoke();
}
else if (arg == SystemMessages.Error)
{
BiometricCancellationSignal.Cancel();
dialogConfiguration.FailedAction?.Invoke();
}
};
if (dialogConfiguration.IsUseAlternativeAuthentication)
{
//Secret key is not allowed to use when SetDeviceCredentialAllowed is true
biometricPrompt.Authenticate(BiometricCancellationSignal, Configuration.CurrentActivity.MainExecutor, authenticationCallback);
}
else
{
if (Configuration.IsUseSecretKey)
{
CryptoObjectHelper cryptoHelper = new CryptoObjectHelper();
biometricPrompt.Authenticate(cryptoHelper.BuildBiometricPromptCryptoObject(), BiometricCancellationSignal, Configuration.CurrentActivity.MainExecutor, authenticationCallback);
}
else
{
biometricPrompt.Authenticate(BiometricCancellationSignal, Configuration.CurrentActivity.MainExecutor, authenticationCallback);
}
}
}
//Android 9+ P SdkInt 28
else if ((int)Build.VERSION.SdkInt >= 28)
{
//Android 9
try
{
CancellationSignal BiometricCancellationSignal = new CancellationSignal();
BiometricPrompt biometricPrompt;
biometricPrompt = new BiometricPrompt
.Builder(Configuration.CurrentActivity)
.SetTitle(dialogConfiguration.DialogTitle)
.SetDescription(dialogConfiguration.DialogDescription)
.SetNegativeButton(dialogConfiguration.AlternativeActionMessage, Configuration.CurrentActivity.MainExecutor, new NegativeButtonOnClickListener(() =>
{
BiometricCancellationSignal.Cancel();
dialogConfiguration.AlternativeAction?.Invoke();
}))
.Build();
BiometricCancellationSignal = new CancellationSignal();
BiometricPrompt.AuthenticationCallback authenticationCallback = new BiometricAuthenticationCallback();
AuthenticationResult = null;
AuthenticationResult = (arg) =>
{
string result = arg;
if (arg == SystemMessages.Success)
{
BiometricCancellationSignal.Cancel();
dialogConfiguration.SuccessAction?.Invoke();
}
else if (arg == SystemMessages.Error)
{
BiometricCancellationSignal.Cancel();
dialogConfiguration.FailedAction?.Invoke();
}
};
if (Configuration.IsUseSecretKey)
{
CryptoObjectHelper cryptoHelper = new CryptoObjectHelper();
biometricPrompt.Authenticate(cryptoHelper.BuildBiometricPromptCryptoObject(), BiometricCancellationSignal, Configuration.CurrentActivity.MainExecutor, authenticationCallback);
}
else
{
biometricPrompt.Authenticate(BiometricCancellationSignal, Configuration.CurrentActivity.MainExecutor, authenticationCallback);
}
}
catch (Exception ex)
{
Configuration.CurrentActivity.RunOnUiThread(() =>
{
Toast.MakeText(Configuration.CurrentActivity, $"Throw exception : {ex.Message}", ToastLength.Long).Show();
});
}
}
//Android 6+ to 8.x SdkInt 23
else if ((int)Build.VERSION.SdkInt >= 23)
{
//Android 6+ to 8.x
FingerprintManagerCompat fingerprintManager = FingerprintManagerCompat.From(Configuration.CurrentActivity);
const int flags = 0; /* always zero (0) */
CryptoObjectHelper cryptoHelper = new CryptoObjectHelper();
// Using the Support Library classes for maximum reach
FingerprintManagerCompat fingerPrintManager = FingerprintManagerCompat.From(Configuration.CurrentActivity);
// AuthCallbacks is a C# class defined elsewhere in code.
Android.Support.V4.OS.CancellationSignal FingerprintCancellationSignal = new Android.Support.V4.OS.CancellationSignal();
FingerprintManagerCompat.AuthenticationCallback authenticationCallback = new AuthenticationCallBack();
Android.Support.V4.App.FragmentTransaction transcation = ((FragmentActivity)Configuration.CurrentActivity).SupportFragmentManager.BeginTransaction();
FingerprintDialog fingerprintDialog = new FingerprintDialog(dialogConfiguration, authenticationCallback, FingerprintCancellationSignal);
fingerprintDialog.Show(transcation, "Dialog Fragment");
AuthenticationResult = null;
AuthenticationResult = (arg) =>
{
string result = arg;
if (arg == SystemMessages.Success)
{
FingerprintCancellationSignal.Cancel();
dialogConfiguration.SuccessAction?.Invoke();
}
else if (arg == SystemMessages.Error)
{
FingerprintCancellationSignal.Cancel();
dialogConfiguration.FailedAction?.Invoke();
}
};
try
{
fingerprintManager.Authenticate(cryptoHelper.BuildFingerprintManagerCompatCryptoObject(), flags, FingerprintCancellationSignal, authenticationCallback, null);
}
catch (Exception ex)
{
Toast.MakeText(Configuration.CurrentActivity, $"Throw exception : {ex.Message}", ToastLength.Long);
}
}
}
/// <summary>
/// Call for the authentication
/// </summary>
/// <param name="dialogConfiguration">Configuration of the dialog</param>
public static async System.Threading.Tasks.Task Authenticate(DialogConfiguration dialogConfiguration)
{
throw new NotImplementedException();
}
