iOS Question Why am I getting errors with different order of #If OBJC blocks?

[JohnC]

When the order of the below #If OBJC blocks with the Webview first then the FaceID block as second, I will generate a whole bunch of errors, with one of them being:

/Users/administrator/Documents/UploadedProjects/<user id>/B4iProject/b4i_b4xmainpage.m:585:32: error: property 'bi' not found on object of type 'B4IWebViewUIDelegate *'
[self.__c CallSubDelayed2:self.bi :handler :(subnamefail) :(authError.localizedDescription)];

But if I reverse the order with the FaceID #If OBJC block being first, then the Webview block, it compiles OK.

Why is this?

'Webview code below
#if OBJC
@end
@interface B4IWebViewUIDelegate:NSObject<WKUIDelegate>
@end
@implementation B4IWebViewUIDelegate
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {
    [B4IObjectWrapper raiseEvent:webView :@"_alert:" :@[message]];
    completionHandler();
}

- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler{
    UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction* okAction = [UIAlertAction actionWithTitle: NSLocalizedString(@"OK", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
          completionHandler(true);
    }];
    UIAlertAction* cancelAction = [UIAlertAction actionWithTitle: NSLocalizedString(@"Cancel", nil) style:UIAlertActionStyleCancel handler:^(UIAlertAction * action) {
          completionHandler(false);
    }];
    [alert addAction:okAction];
    [alert addAction:cancelAction];
    UIViewController *rootVC = [UIApplication sharedApplication].keyWindow.rootViewController;
    [rootVC presentViewController:alert animated:YES completion:nil];
}

- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)message defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * result))completionHandler {
    UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert];
  
    [alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull alertTextField) {
        alertTextField.keyboardType = 0;
        alertTextField.textAlignment = 1;
        alertTextField.text = defaultText;
    }];

    UIAlertAction* okAction = [UIAlertAction actionWithTitle: NSLocalizedString(@"OK", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
        completionHandler([[alert textFields][0] text]);
    }];
    UIAlertAction* cancelAction = [UIAlertAction actionWithTitle: NSLocalizedString(@"Cancel", nil) style:UIAlertActionStyleCancel handler:^(UIAlertAction * action) {
          completionHandler(@"");
    }];
    [alert addAction:okAction];
    [alert addAction:cancelAction];
    UIViewController *rootVC = [UIApplication sharedApplication].keyWindow.rootViewController;
    [rootVC presentViewController:alert animated:YES completion:nil];
}
#End If

'face id below
#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

 

[Erel]

Check the generated OBJC code under Objects\src\B4iProject.

You will see that the very first @end closes the original class and then your code comes.