CODEWITHSUNDEEP
iosobjective-ccocoa-touch
Kartik_Koro
Kartik_Koro

Reputation: 1287

Objective C: No @interface declares the selector error

I have a class called TAPJSONPoster. It's .h is as follows:

#import <Foundation/Foundation.h>

@interface TAPJsonPoster : NSObject
-(id)initWithURL:(NSURL*)url WithJson:(NSData*)jsondata;
-(NSData*)getResponse;

@end

It's .m is:

#import "TAPJsonPoster.h"
@interface TAPJsonPoster()
@property NSURL *url;
@property NSData *jsondata;

@end

@implementation TAPJsonPoster
-(id)initWithURL:(NSURL*)url WithJson:(NSData*)jsondata
{
    self=[super init];
    self.url=url;
    self.jsondata=jsondata;

    return self;

}

-(NSData*)getResponse
{
    return self.jsondata;


}
@end

I still have tto fill in getResponse, but the init itself is not working. In my ViewController I have

#import "TAPJSONPostConnector.h"

and a method to login:

- (IBAction)loginValidate:(id)sender {
    NSString *username=self.unTextField.text;
    NSString *password=self.pwdTextField.text;
    NSArray *params=[NSArray arrayWithObjects:@"userId",@"password", nil];
    NSDictionary *dictionary=[NSDictionary dictionaryWithObjectsAndKeys:
                       @"_requestName", @"login",
                       @"_ParamNames", params,
                       @"userId", username,
                       @"password", password,
                       nil];
    NSData *data=[NSJSONSerialization dataWithJSONObject:dictionary options:NSJSONWritingPrettyPrinted error:nil];
    NSURL *url=[NSURL URLWithString:@"loginURL"];
    TAPJSONPostConnector *connector=[[TAPJSONPostConnector alloc] initWithURL:url WithJson:data];



}

The last line where I am making the PostConnector is giving me an error saying that

No @interface in TAPJSONPostConnector declares the selector initWithURL:WithJson

What am I doing wrong?

EDIT I put in [connector getResponse] below the connector initialization and I get the same error for this method also, am I doin something wrong in importing?

Upvotes: 1

Views: 125

Answers (2)

Inder Kumar Rathore
Inder Kumar Rathore

Reputation: 40018

Either you're allocating a wrong object TAPJSONPostConnector instead of TAPJsonPoster

TAPJsonPoster *connector=[[TAPJsonPoster alloc] initWithURL:url WithJson:data];

Or you forgot to change the super class for TAPJSONPostConnector as TAPJsonPoster

@interface TAPJSONPostConnector : TAPJsonPoster

Change whatever fits your needs

One tip if you can change the name of method initWithURL: withJson: that will be according to the naming convetion

Upvotes: 1

Mick MacCallum
Mick MacCallum

Reputation: 130222

Well, you're calling the initWithURL:withJson: initializer on TAPJSONPostConnector

TAPJSONPostConnector *connector=[[TAPJSONPostConnector alloc] initWithURL:url WithJson:data];

But it looks like this is declared on the TAPJsonPoster class. Perhaps this is what you meant.

TAPJsonPoster *connector=[[TAPJsonPoster alloc] initWithURL:url WithJson:data];

Upvotes: 2

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