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iOS Build a Blog Reader iPhone App Data Modeling Designated Initializers and Convenience Constructors

Ludwing Najera
Ludwing Najera
4,596 Points
Posted by Ludwing Najera
Ludwing Najera
4,596 Points

BlogPost troubles

I am putting a convenience constructor in my code and when i put it in, the convenience constructor said that blogPostWith title was not declared. then it says that the other method, bp, had a expected expression 

BlogPost *bp = [[BlogPost alloc] initWithTitle:@"some title"];
bp.author = @"Author";

BlogPost *bp1 = [BlogPost blogPostWithTitle:@"another title"];
bp1.author = @"Amit";

in my.m file where blogPostWithTitle was declared, i will put the code below

+(id)blogPostWithTitle:(NSString *)title {
       return [[self alloc] initWithTitle:title];
}

help please!

4 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

did you add the method headers to your .h file so that they are visible to other classes?

Ludwing Najera
Ludwing Najera
4,596 Points
Ludwing Najera
Ludwing Najera
4,596 Points

not that i know of maybe?

Ludwing Najera
Ludwing Najera
4,596 Points
Ludwing Najera
Ludwing Najera
4,596 Points

yes, i put method headers on there, i just checked

Michael Keesling
Michael Keesling
4,065 Points
Michael Keesling
Michael Keesling
4,065 Points

I believe you simply forgot to create an instance of it in the "BlogPost.h" class.
If you only set up blogpost.m to contain the - (id) ______ stuff then you won't have initialized it correctly.

You have to have in BlogPost.h - (id) initWithTitle:(NSString *)title;

and BlogPost.m

  • (id) initWithTitle:(NSString *) title {

    self = [super init]; if (self) { self.title = title;

    } return self; }