iOS error [__nscfnumber length]: Unrecognized

There is a big reason for this error because the type is wrong, perhaps your data is parsed from the JSON, but need to see whether this data is nsstring or nsnumber type, if it is nsnumber type, You use the NSString type of variable directly to receive him, then you will certainly report such a mistake, so be sure to pay attention to the type of data.

Report:

    NSNumber turn nsstring    nsnumber *nsnumber;    Nsnumberformatter *numberformatter = [[Nsnumberformatter alloc] init];    NSString *str = [Numberformatter stringfromnumber:nsnumber];

iOS error [__nscfnumber length]: Unrecognized