protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
global::Xamarin.FormsMaps.Init(this, bundle);
if (Android.OS.Build.VERSION.SdkInt <= Android.OS.BuildVersionCodes.M)
{
Permission permissionCheck = ContextCompat.CheckSelfPermission(
BaseContext, Manifest.Permission.AccessFineLocation
);
if (permissionCheck != Permission.Granted)
{
ActivityCompat.RequestPermissions(
this,
new String[] { Manifest.Permission.AccessFineLocation },
REQUEST_ACCESS_FINE_LOCATION
);
}
}
LoadApplication(new App());
}
private void OnClickFaceAuthWithCrpObj(object sender, EventArgs e)
{
string Tag = "FaceAuthWithCrpObj";
Android.Content.PM.Permission permissionCheck = Android.Content.PM.Permission.Granted;
if (Build.VERSION.SdkInt >= BuildVersionCodes.M)
{
permissionCheck = CheckSelfPermission(Manifest.Permission.Camera);
}
if (permissionCheck != Android.Content.PM.Permission.Granted)
{
log.Info(Tag, "The camera permission is not enabled. Please enable it.");
// request camera permissions
if (Build.VERSION.SdkInt >= BuildVersionCodes.M)
{
RequestPermissions(new string[] { Manifest.Permission.Camera }, 1);
}
return;
}
BioAuthnCallback callback = new FidoBioAuthnCallback();
// Cancellation Signal
CancellationSignal cancellationSignal = new CancellationSignal();
FaceManager faceManager = new FaceManager(this);
log.Info(Tag, $"IsHardwareDetected:{faceManager.IsHardwareDetected}");
// Checks whether 3D facial authentication can be used.
int errorCode = faceManager.CanAuth();
if (errorCode != 0)
{
log.Info(Tag, "Can not authenticate. errorCode=" + errorCode);
return;
}
// flags
int flags = 0;
// Authentication messsage handler.
Handler handler = null;
// Recommended CryptoObject to be set to null. KeyStore is not associated with face authentication in current
// version. KeyGenParameterSpec.Builder.setUserAuthenticationRequired() must be set false in this scenario.
CryptoObject crypto = null;
log.Info(Tag, "Start face authentication.\nAuthenticating......\n");
faceManager.Auth(crypto, cancellationSignal, flags, callback, handler);
}
/// <summary>
/// 判断用户是否有权限
/// </summary>
/// <param name="permissionName"></param>
/// <returns></returns>
public bool CheckPermission(string permissionName)
{
if (Xamarin.Essentials.DeviceInfo.Version.Major < 6)
{
#if DEBUG
string msg = $"当前系统为 Android{Xamarin.Essentials.DeviceInfo.Version.Major}";
System.Diagnostics.Debug.WriteLine(msg);
System.Diagnostics.Debugger.Break();
#endif
return(true);
}
Android.Content.PM.Permission permission = mAppActivity.CheckSelfPermission(permissionName);
return(permission == Android.Content.PM.Permission.Granted ? true : false);
}
/// <inheritdoc />
public Task <AuthenticationResult> AuthenticateAsync(string alertMessage = null)
{
Permission permissionResult = ContextCompat.CheckSelfPermission(Application.Context, Manifest.Permission.UseFingerprint);
var tcs = new TaskCompletionSource <AuthenticationResult>();
if (permissionResult == Permission.Granted)
{
if (AvailableBiometricType == BiometricType.None)
{
Logger.Debug("[BiometricAuthenticationService] Authentication not available on this device");
tcs.TrySetResult(new AuthenticationResult(false, "Authentication not available"));
}
else
{
if (_fingerprintFragmentType != null)
{
var fragment = Activator.CreateInstance(_fingerprintFragmentType, tcs);
if (fragment is FingerprintManagerFragment customFragment)
{
MainApplication.CurrentActivity.RunOnUiThread(() => { customFragment.Show(MainApplication.CurrentActivity.FragmentManager, "dialog"); });
}
else
{
throw new Exception("Specified FingerprintManagerFragment does not inherit from FingerprintManagerFragment");
}
}
else
{
var fingerPrintDialog = new FingerprintManagerFragment(_alertTitle, alertMessage ?? "Please scan fingerprint", tcs);
MainApplication.CurrentActivity.RunOnUiThread(() => { fingerPrintDialog.Show(MainApplication.CurrentActivity.FragmentManager, "dialog"); });
}
}
}
else
{
tcs.TrySetResult(new AuthenticationResult(false, "UseFingerprint Permission has not been granted."));
}
return(tcs.Task);
}
