Check if NSDictionary is empty

Question

I want to check if an NSDictionary is empty. I am doing it like this.

  mutDictValues = [[[NSUserDefaults standardUserDefaults] objectForKey:@\"dicV         


        

Answer 1

As most of the answers have correctly pointed out that you are passing un-recognized selector objectForKey: to a NSString instance instead of NSDictionary, hence observing exception

-[__NSCFConstantString objectForKey:]:

Check NSUserDefaults to see whether cities returns a dictionary or something else. You can do this by two ways

I. NSLog all data in NSUserDefaults

NSLog(@"%@", [[NSUserDefaults standardUserDefaults] dictionaryRepresentation]);

II. Check the plist file which store the NSUserDefaults from the Application folder. Check this answer for more details.

Hope that helps.

Answer 2

if ( [mutDictValues count] == 0 ) {
    //code here
}
else {
    //code here
}

After having your dic retrieved this should do