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    <p>You could create an NSMutableDictionary and loop through your array, adding the keys to the mutable dictionary using the <code>allKeys</code>.</p> <p>For example, if your array was called <code>dictArray</code>, you could do:</p> <pre><code>NSMutableDictionary *combinedDictionary = [[NSMutableDictionary alloc] init]; for (NSDictionary *currentDictionary in dictArray) { NSArray *keys = [currentDictionary allKeys]; for (int n=0;n&lt;[keys count];n++) { NSMutableDictionary *dictionaryToAdd = [combinedDictionary valueForKey:[keys objectAtIndex:n]]; if (!dictionaryToAdd) dictionaryToAdd = [[NSMutableDictionary alloc] init]; [dictionaryToAdd setValuesForKeysWithDictionary:[currentDictionary valueForKey:[keys objectAtIndex:n]]]; [combinedDictionary setValue:dictionaryToAdd forKey:[keys objectAtIndex:n]]; } } </code></pre> <p>This code first creates a dictionary <code>combinedDictionary</code> that will be your final dictionary. It loops through all of the dictionaries in your array and for each one does the following:</p> <p>First, it gets an array of all keys in the dictionary. For the dictionaries you provided this array will look like <code>@[@"Bath"]</code> for the first 3 and <code>@[@"Birmingam"]</code> for the other two.</p> <p>The code then loops through these keys and gets the already existing dictionary from the combined dictionary from this key. If the dictionary doesn't exist, one is created.</p> <p>Then, it adds all of the values from the dictionary from the array and sets the new dictionary to be the one in <code>combinedDictionary</code>.</p>
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    1. COthanks, but I keep getting unrecognized selector sent to instance
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    2. COI added more details, because i keep getting unrecognized selector error
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    3. COYour dictArray should be an array not a dictionary. It is the array of the dictionaries that you are combining (for example, it could contain your five example dictionaries each as an object of the array).
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