Apple Mach O linker error objc_class_$_PFSignUpView - ios

Question

I have been following the parse documentation to create a login and sign up for my app. It is giving me the error below:
Apple Mach O linker error objc_class_$_PFSignUpView
ld: warning: Auto-LinkAing supplied '/Users/Carson/Documents/CC/APP Dev/parse-library-1.8.0/ParseUI.framework/ParseUI', framework linker option at /Users/Carson/Documents/CC/APP Dev/parse-library-1.8.0/ParseUI.framework/ParseUI is not a dylib
Undefined symbols for architecture x86_64:
"_OBJC_CLASS_$_PFLogInViewController", referenced from:
objc-class-ref in ViewController.o
"_OBJC_CLASS_$_PFSignUpViewController", referenced from:
objc-class-ref in ViewController.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Any help would be greatfully received
Here is the code I have entered:
ViewController.h
//
// ViewController.h
// Parse3
//
// Created by Carson Carbery on 8/20/15.
// Copyright (c) 2015 Carson Carbery. All rights reserved.
//
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#import <ParseUI/PFCollectionViewCell.h>
#import <ParseUI/PFImageView.h>
#import <ParseUI/PFLogInView.h>
#import <ParseUI/PFLogInViewController.h>
#import <ParseUI/PFProductTableViewController.h>
#import <ParseUI/PFPurchaseTableViewCell.h>
#import <ParseUI/PFQueryCollectionViewController.h>
#import <ParseUI/PFQueryTableViewController.h>
#import <ParseUI/PFSignUpView.h>
#import <ParseUI/PFSignUpViewController.h>
#import <ParseUI/PFTableViewCell.h>
#import <ParseUI/PFTextField.h>
#import <ParseUI/ParseUIConstants.h>
#import <FBSDKCoreKit/FBSDKCoreKit.h>
#import <FBSDKLoginKit/FBSDKLoginKit.h>
// Implement both delegates
#interface ViewController : UIViewController <PFLogInViewControllerDelegate, PFSignUpViewControllerDelegate>
#end
ViewController.m
// ViewController.m
// Parse3
//
// Created by Carson Carbery on 8/20/15.
// Copyright (c) 2015 Carson Carbery. All rights reserved.
//
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if (![PFUser currentUser]) { // No user logged in
// Create the log in view controller
PFLogInViewController *logInViewController = [[PFLogInViewController alloc] init];
[logInViewController setDelegate:self]; // Set ourselves as the delegate
// Create the sign up view controller
PFSignUpViewController *signUpViewController = [[PFSignUpViewController alloc] init];
[signUpViewController setDelegate:self]; // Set ourselves as the delegate
// Assign our sign up controller to be displayed from the login controller
[logInViewController setSignUpController:signUpViewController];
// Present the log in view controller
[self presentViewController:logInViewController animated:YES completion:NULL];
}
}
// PF LOGIN METHODS
// Sent to the delegate to determine whether the log in request should be submitted to the server.
- (BOOL)loginViewController:(PFLogInViewController *)logInController shouldBeginLogInWithUsername:(NSString *)username password:(NSString *)password {
// Check if both fields are completed
if (username && password && username.length != 0 && password.length != 0) {
return YES; // Begin login process
}
[[[UIAlertView alloc] initWithTitle:#"Missing Information"
message:#"Make sure you fill out all of the information!"
delegate:nil
cancelButtonTitle:#"ok"
otherButtonTitles:nil] show];
return NO; // Interrupt login process
}
// Sent to the delegate when a PFUser is logged in.
- (void)logInViewController:(PFLogInViewController *)logInController didLogInUser:(PFUser *)user {
[self dismissViewControllerAnimated:YES completion:NULL];
}
// Sent to the delegate when the log in attempt fails.
- (void)logInViewController:(PFLogInViewController *)logInController didFailToLogInWithError:(NSError *)error {
NSLog(#"Failed to log in...");
}
// Sent to the delegate when the log in screen is dismissed.
- (void)logInViewControllerDidCancelLogIn:(PFLogInViewController *)logInController {
[self.navigationController popViewControllerAnimated:YES];
}
// PF SIGNUP METHODS
// Sent to the delegate to determine whether the sign up request should be submitted to the server.
- (BOOL)signUpViewController:(PFSignUpViewController *)signUpController shouldBeginSignUp:(NSDictionary *)info {
BOOL informationComplete = YES;
// loop through all of the submitted data
for (id key in info) {
NSString *field = [info objectForKey:key];
if (!field || field.length == 0) { // check completion
informationComplete = NO;
break;
}
}
// Display an alert if a field wasn't completed
if (!informationComplete) {
[[[UIAlertView alloc] initWithTitle:#"Missing Information"
message:#"Make sure you fill out all of the information!"
delegate:nil
cancelButtonTitle:#"ok"
otherButtonTitles:nil] show];
}
return informationComplete;
}
//// Sent to the delegate when a PFUser is signed up.
//- (void)signUpViewController:(PFSignUpViewController *)signUpController didSignUpUser:(PFUser *)user {
// [self dismissModalViewControllerAnimated:YES]; // Dismiss the PFSignUpViewController
//}
// Sent to the delegate when the sign up attempt fails.
- (void)signUpViewController:(PFSignUpViewController *)signUpController didFailToSignUpWithError:(NSError *)error {
NSLog(#"Failed to sign up...");
}
// Sent to the delegate when the sign up screen is dismissed.
- (void)signUpViewControllerDidCancelSignUp:(PFSignUpViewController *)signUpController {
NSLog(#"User dismissed the signUpViewController");
}

Answer 1

That's because PFLoginViewController and PFSignUpViewController are not part of the standard Parse distribution and SDK.
Instead, they are a drop-in class (named ParseUI-iOS) where the code is found here (a download link and a GitHub link, plus a tutorial of how to specifically make use of them).
You need to add those files into your project to be able to pick them up and compile them.