How do I identify NSDictionary is empty or not

Question

I need help.

I want to show data if there is data in dictionary else I want to show No-Data screen if there is no value in dictionary. But problem is like this that I'm getting count as 1. Though there is no value in dictionary.

As you all are trying to guess this one is duplicate. But my question is little-bit different. In this dictionary I have multiple key-value pairs. So I can't find for one key, that's why I'm just trying to get count of it's.

 NSLog(@"%lu",(unsigned long)dict.count); //<-- It prints : 1

 NSLog(@"%@", dict); //<----It will print below structure with no data

//Output :- 
    (
            {
        }
    )

So how do I will identify like this dictionary to show it is empty. Though I tried but it is going count as 1.

see this for help : https://stackoverflow.com/questions/17745336/check-if-nsdictionary-is-empty — Anbu.Karthik, Aug 02 '18 at 07:41
Possible duplicate of [Check if NSDictionary is empty](https://stackoverflow.com/questions/17745336/check-if-nsdictionary-is-empty) — Faysal Ahmed, Aug 02 '18 at 07:42
Hi I have edited my question. So plz can you give me solution for my question. I need help. — , Aug 02 '18 at 07:42
Are you sure `dict` is a dictionary? According to the output the object seems to be an **array** containing one empty dictionary. — vadian, Aug 02 '18 at 07:48
If this is an array then please follow this: https://stackoverflow.com/a/2048068/5167909 — Faysal Ahmed, Aug 02 '18 at 07:58

vadian · Accepted Answer · 2018-08-02T08:26:16.543

0

According to the output dict is not a dictionary ({}), it's an array (()) containing one empty dictionary.

To check if there is a dictionary in the array which is not empty you could use (I renamed dict to array)

if (array.count > 0 && array[0].count > 0) { // will be evaluated to true if the dictionary is not empty

edited Aug 02 '18 at 08:26

answered Aug 02 '18 at 07:56

vadian

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Property 'count' not found on object of type 'id' -> array[0] – Aug 02 '18 at 07:59
NSMutableArray *dict = self.product.productAllergenInformationModuleArray; // Assigning NSDictionary to it. – Aug 02 '18 at 08:00
Declare the array `NSMutableArray *array = ` and please don't name it `dict` – vadian Aug 02 '18 at 08:02
if (array.count > 0 && [array[0] count] > 0) { NSLog(@"Null"); } else{ NSLog(@"%@", array); } – Aug 02 '18 at 08:15
I've tried this way, as you told. But still it prints empty array instead of Null – Aug 02 '18 at 08:16
2

Please **read** the code and try to understand it. The `if` block is printed if the array is **not** empty (`> 0`) and the `else` block if it's empty. Or check `if (array.count > 0 && array[0].count == 0) {` – vadian Aug 02 '18 at 08:20

How do I identify NSDictionary is empty or not

1 Answers1