public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Android.Content.PM.Permission[] grantResults)
{
if (requestCode == FINGERPRINT_PERMISSION_REQUEST_CODE && grantResults[0] == Android.Content.PM.Permission.Granted)
{
SetContentView(Resource.Layout.activity_main);
var purchaseButton = FindViewById <Button> (Resource.Id.purchase_button);
if (!mKeyguardManager.IsKeyguardSecure)
{
purchaseButton.Enabled = false;
// Show a message that the user hasn't set up a fingerprint or lock screen.
Toast.MakeText(this, "Secure lock screen hasn't set up.\n"
+ "Go to 'Settings -> Security -> Fingerprint' to set up a fingerprint", ToastLength.Long).Show();
return;
}
mFingerprintManager = (FingerprintManager)GetSystemService(Context.FingerprintService);
if (!mFingerprintManager.HasEnrolledFingerprints)
{
purchaseButton.Enabled = false;
// This happens when no fingerprints are registered.
Toast.MakeText(this, "Go to 'Settings -> Security -> Fingerprint' " +
"and register at least one fingerprint", ToastLength.Long).Show();
return;
}
CreateKey();
purchaseButton.Enabled = true;
purchaseButton.Click += (sender, e) => {
// Show the fingerprint dialog. The user has the option to use the fingerprint with
// crypto, or you can fall back to using a server-side verified password.
FindViewById(Resource.Id.confirmation_message).Visibility = ViewStates.Gone;
FindViewById(Resource.Id.encrypted_message).Visibility = ViewStates.Gone;
mFragment = new FingerprintAuthenticationDialogFragment();
mSharedPreferences = this.GetPreferences(FileCreationMode.Private);
if (InitCipher())
{
mFragment.SetCryptoObject(new FingerprintManager.CryptoObject(mCipher));
var useFingerprintPreference = mSharedPreferences.GetBoolean(GetString(Resource.String.use_fingerprint_to_authenticate_key), true);
if (useFingerprintPreference)
{
mFragment.SetStage(FingerprintAuthenticationDialogFragment.Stage.Fingerprint);
}
else
{
mFragment.SetStage(FingerprintAuthenticationDialogFragment.Stage.Password);
}
mFragment.Show(FragmentManager, DIALOG_FRAGMENT_TAG);
}
else
{
mFragment.SetCryptoObject(new FingerprintManager.CryptoObject(mCipher));
mFragment.SetStage(FingerprintAuthenticationDialogFragment.Stage.NewFingerprintEnrolled);
mFragment.Show(FragmentManager, DIALOG_FRAGMENT_TAG);
}
};
}
}
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Android.Content.PM.Permission[] grantResults)
{
if (requestCode == FINGERPRINT_PERMISSION_REQUEST_CODE && grantResults[0] == Android.Content.PM.Permission.Granted) {
SetContentView (Resource.Layout.activity_main);
var purchaseButton = FindViewById<Button> (Resource.Id.purchase_button);
if (!mKeyguardManager.IsKeyguardSecure) {
purchaseButton.Enabled = false;
// Show a message that the user hasn't set up a fingerprint or lock screen.
Toast.MakeText (this, "Secure lock screen hasn't set up.\n"
+ "Go to 'Settings -> Security -> Fingerprint' to set up a fingerprint", ToastLength.Long).Show ();
return;
}
mFingerprintManager = (FingerprintManager)GetSystemService (Context.FingerprintService);
if (!mFingerprintManager.HasEnrolledFingerprints) {
purchaseButton.Enabled = false;
// This happens when no fingerprints are registered.
Toast.MakeText (this, "Go to 'Settings -> Security -> Fingerprint' " +
"and register at least one fingerprint", ToastLength.Long).Show ();
return;
}
CreateKey ();
purchaseButton.Enabled = true;
purchaseButton.Click += (sender, e) => {
// Show the fingerprint dialog. The user has the option to use the fingerprint with
// crypto, or you can fall back to using a server-side verified password.
FindViewById (Resource.Id.confirmation_message).Visibility = ViewStates.Gone;
FindViewById (Resource.Id.encrypted_message).Visibility = ViewStates.Gone;
mFragment = new FingerprintAuthenticationDialogFragment ();
mSharedPreferences = this.GetPreferences (FileCreationMode.Private);
if (InitCipher ()) {
mFragment.SetCryptoObject (new FingerprintManager.CryptoObject (mCipher));
var useFingerprintPreference = mSharedPreferences.GetBoolean (GetString (Resource.String.use_fingerprint_to_authenticate_key), true);
if (useFingerprintPreference) {
mFragment.SetStage (FingerprintAuthenticationDialogFragment.Stage.Fingerprint);
} else {
mFragment.SetStage (FingerprintAuthenticationDialogFragment.Stage.Password);
}
mFragment.Show (FragmentManager, DIALOG_FRAGMENT_TAG);
} else {
mFragment.SetCryptoObject (new FingerprintManager.CryptoObject (mCipher));
mFragment.SetStage (FingerprintAuthenticationDialogFragment.Stage.NewFingerprintEnrolled);
mFragment.Show (FragmentManager, DIALOG_FRAGMENT_TAG);
}
};
}
}
