B4i Library iOS - TouchID

#PlistExtra: <key>NSFaceIDUsageDescription</key<string>Uses face id to allow authentication</string>
Sub Button_Click
ShowTouchID(Me,"TouchOK", "TouchFail")
End Sub


Sub ShowTouchID(SubHandler As Object, ApprovedSub As String, FailSub As String)
Dim noMe As NativeObject=Me
noMe.RunMethod("TouchID:::",Array(SubHandler,ApprovedSub,FailSub))
End Sub

Sub TouchOK
Log("Touch Approved")
End Sub

Sub TouchFail(ErrorDescription As String)
Log(ErrorDescription)
End Sub

#If OBJC

#import <LocalAuthentication/LocalAuthentication.h>

-(void)TouchID :(NSObject*)handler :(NSString*) subnameok :(NSString*) subnamefail
{
LAContext *myContext = [[LAContext alloc] init];
NSError *authError = nil;
NSString *myLocalizedReasonString = @"Used for quick and secure access to the test app";
if ([myContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&authError]) {
    [myContext evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
                  localizedReason:myLocalizedReasonString
                            reply:^(BOOL success, NSError *error) {
            if (success) {
                [self.__c CallSubDelayed:self.bi :handler :(subnameok)];
            } else {
                [self.__c CallSubDelayed2:self.bi :handler :(subnamefail) :(error.localizedDescription)];
            }
        }];
} else {
[self.__c CallSubDelayed2:self.bi :handler :(subnamefail) :(authError.localizedDescription)];

}
}


#End If