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Editorial Team
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Asked: 2026-05-19T03:15:02+00:00

I use touchjson library. I receive json structure. {My dishes: } if i have

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I use touchjson library. I receive json structure.

  1. {"My dishes": ""} if i have not my dishes or
  2. {"My dishes": [{"dish": "rice with fish""restaurant_id": "35", "latitude": "39.783871","longitude": "-96.314759"}]} if i have a dish.

–

NSDictionary *all_dish = [dictionary objectForKey:@"My dishes"];
for (NSDictionary *my_dish in all_dish) {
  //some code
}

in the first case , i get 

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString countByEnumeratingWithState:objects:count:]: unrecognized selector sent to instance 0x2900688'

How to solve the problem?

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1 Answer

  1. Editorial Team

    In the first case the object for key My dishes is not a dictionary, but a NSString, which does not support fast enumeration.

    In the second case, all_dishes isn’t a NSDictionary but a NSArray. I am surprised it works.

    The way no dishes is handled is broken from where I stand: if you have no dishes My dishes should have a value of null or an empty list, not “”.

    If you can’t control this, check whether the value of My dishes is an NSArray before attempting to enumerate over it.

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