ios - Why am I getting "[__NSArrayI allKeys]: unrecognized selector sent to instance" / why is NSDictionary transforming? -


looking [__nsarrayi allkeys]: unrecognized selector sent instance error up, seemingly occurs when send nsarray allkeys message meant nsdictionary, in case i'm sending nsdictionary.

here's code use when interfacing pocket api:

        nsdictionary *articles = [response objectforkey:@"list"];          // create array can use sort keys (and articles) in order of when added         nsmutablearray *allkeys = [[articles allkeys] mutablecopy];

the last line there causes error. articles declared nsdictionary? why not liking it?

oddly enough, if inspect @ runtime says it's nsarray! why did change?

(lldb) po articles $5 = 0x082103e0 <__nsarrayi 0x82103e0>(  )  (lldb) po [articles class] $6 = 0x01b83b8c __nsarrayi (lldb)

it may declared in code dictionary, doesn't make dictionary. array , why exception. check response know should expect.

your code compiles because compiler doesn't know it's going array , trusts dictionary. because objectforkey: returns id.


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