How do I place an __NSCFNumber in an NSString?

Question

I have an NSNumber variable called task_id. I want to place that NSNumber variable in an NSString (post request). Here is what I have tried:

NSString *post = [NSString stringWithFormat:@"&task_id=%@", task_id];

and:

NSString *post = [NSString stringWithFormat:@"&task_id=%@", [NSString stringWithFormat:@"%@",task_id]];

For some reason the string doesn't include the task_id value to the POST request. How can I place the NSNumber into the string?

Update

task_id is an NSCFNumber according to this code:

NSLog(@"%@", [task_id class]);

Many thanks indeed,

Peter

I get an empty response, which is expected. When I place a number in the string (hard-coded) I get the appropiate response. I get no objective-c errors — Peter Stuart, Feb 24 '14 at 17:37
it doesn't matter whether its NSNumber or NSCFNumber.check this link for differences http://stackoverflow.com/questions/4357063/what-is-the-class-nscfnumber-in-ios-4-1. — santhu, Feb 24 '14 at 17:40
@PeterStuart: I did not ask for the response. If you want help to find the actual problem, then show the NSLog output of `task_id` and `post`, and also the code how you sent the request. — Martin R, Feb 24 '14 at 17:40
Okay, sorry I misread your question, when I call post in NSLog I get "&task_id=XXX". Maybe the problem lies somewhere else then. — Peter Stuart, Feb 24 '14 at 17:43

score 11 · Answer 1 · edited May 23 '17 at 12:17

11

NSNumber *myNumber = @12;
NSString *myString = [myNumber stringValue];
NSString *post = [NSString stringWithFormat:@"&task_id=%@", myString];

It was already answered here

edited May 23 '17 at 12:17

Community

answered Feb 24 '14 at 17:32

zaheer

I already tried that answer. – Peter Stuart Feb 24 '14 at 17:33
1

Why should that work better than the original code? Btw. `[NSNumber stringValue]` does not compile. – Martin R Feb 24 '14 at 17:38
Where he said `NSNumber`, it is assumed that you would put in your variable for your `NSNumber` object. – Gavin Feb 24 '14 at 17:49

score 2 · Answer 2 · answered Feb 24 '14 at 17:30

2

it should work.But anyway, if task-id is just an int ,

NSString *post = [NSString stringWithFormat:@"&task_id=%d", task_id.intValue];

answered Feb 24 '14 at 17:30

santhu

1

Why should that work better than the original code? – Martin R Feb 24 '14 at 17:39
well i said, it should work for obvious reasons. But this kinda plan B. – santhu Feb 24 '14 at 17:40
1

"It should work" is a useful *comment*. I can see no reason why "Plan B" should work better ... – Martin R Feb 24 '14 at 17:44
@MartinR care to explain "betterness"? pls . iam a leaner. – santhu Feb 24 '14 at 17:47
What I meant is: If `NSString *post = [NSString stringWithFormat:@"&task_id=%d", task_id.intValue];` works then the original code would work as well. There is no reason to replace the original code with the one that you suggested. – Martin R Feb 24 '14 at 17:49

score 1 · Accepted Answer · edited Mar 13 '15 at 13:54

1

Thanks for everyones efforts. It turns out that wasn't the problem, and the problems lies within the web server!

I misunderstood the whole thing,

Thanks guys,

Peter

edited Mar 13 '15 at 13:54

Shaik Riyaz

answered Feb 24 '14 at 17:44

Peter Stuart

3 Answers3