CODEWITHSUNDEEP
objective-cnsobject
Johann Burgess
Johann Burgess

Reputation: 616

Method definition for 'initWithName...' not found. Error

I have a NSObject class in Xcode and the @implementation line is giving me an error; Method definition for 'initWithName:tutorID:tutorPhone:tutorEmail:' not found.

My .h file:

#import <Foundation/Foundation.h>

@interface TutorsItem : NSObject

@property (nonatomic, strong) NSString *tutorName;
@property (nonatomic) int tutorID;
@property (nonatomic, strong) NSString *tutorPhone;
@property (nonatomic, strong) NSString *tutorEmail;


- (id)initWithName:(NSString *)tutorName tutorID:(int)tutorID tutorPhone:(NSString *)tutorPhone tutorEmail:(NSString *)tutorEmail;

@end

My .m file:

#import "TutorsItem.h"

@implementation TutorsItem

@synthesize tutorName = tutorName;
@synthesize tutorID = tutorID;
@synthesize tutorPhone = tutorPhone;
@synthesize tutorEmail = tutorEmail;

- (id)initWithName:(NSString *)title subtitle:(NSString *)subtitle {
    self = [super init];
    if (self) {
        self.tutorName = tutorName;
        self.tutorID = tutorID;
        self.tutorPhone = tutorPhone;
        self.tutorEmail = tutorEmail;

    }

    return self;
}

@end

Upvotes: 0

Views: 2280

Answers (4)

Flexicoder
Flexicoder

Reputation: 8511

Just so you are clear what people are try to tell you in your .h you have the following line of code

- (id)initWithName:(NSString *)tutorName tutorID:(int)tutorID tutorPhone:(NSString *)tutorPhone tutorEmail:(NSString *)tutorEmail;

but in your .m file you have this...

- (id)initWithName:(NSString *)title subtitle:(NSString *)subtitle

As you can see the 2 lines of code don't match, the compiler expects you to have a method in the .m file with the same name as you've defined in the .h. So to get rid of the error your .m file would need to have the following

- (id)initWithName:(NSString *)tutorName tutorID:(int)tutorID tutorPhone:(NSString *)tutorPhone tutorEmail:(NSString *)tutorEmail
{
    self = [super init];
    if (self) {
        self.tutorName = tutorName;
        self.tutorID = tutorID;
        self.tutorPhone = tutorPhone;
        self.tutorEmail = tutorEmail;

    }

    return self;
}

As others have also pointed out its not a good idea to have your parameter names to be the same as your properties, it just adds to confusion. The same goes for your @synthesize

This...

@synthesize tutorName = tutorName;

Might as well be this...

@synthesize tutorName;

Upvotes: 0

Andrey Chernukha
Andrey Chernukha

Reputation: 21808

Method defenition not found is not an ERROR, it's a WARNING. And you get it cause you did not provide the definition for your method inside @implementation section. You can still compile and run your code, but if you try to call this method your app will crash. Simply provide the definition and this warning will vanish

And btw get rid of this:

    self.tutorName = tutorName;
    self.tutorID = tutorID;
    self.tutorPhone = tutorPhone;
    self.tutorEmail = tutorEmail;

inside - (id)initWithName:(NSString *)title subtitle:(NSString *)subtitle because what you do there makes no sense. What you do there is assign variable values to themselves

Upvotes: 0

Yotam Vaknin
Yotam Vaknin

Reputation: 676

You want to change your .m file to:

- (id)initWithName:(NSString *)tutorName tutorID:(int)tutorID tutorPhone:(NSString *)tutorPhone tutorEmail:(NSString *)tutorEmail{
    self = [super init];
    if (self) {
        self.tutorName = tutorName;
        self.tutorID = tutorID;
        self.tutorPhone = tutorPhone;
        self.tutorEmail = tutorEmail;

    }

    return self;
}

The header of the function in .m file only included the subtitle, and not tutorName , tutorId and so on. I hope this helps :)

Upvotes: 1

mah
mah

Reputation: 39837

The report is not an error it's a warning (unless you've enabled "warnings are errors"). It's a common warning when your @interface declares a method that your @implementation doesn't provide.

At @Wain comments, you have an init method with a very different signature in your implementation; did you intend for it to match the signature that you defined, or did you plan to provide two initializers? It's fine to have a method that doesn't appear in your @interface, but it's expected that everything presented in your @interface is intended to have an implementation as well.

Upvotes: 0

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