How to sort an array which contains Dictionaries?

I have an array which contains dictionaries in it; so how can I sort th开发者_高级运维e array according to dictionary key values?

If every element in the array is a dictionary containing a certain key, you can sort the array using a sort descriptor. For instance, if every element is a dictionary containing a key called "name":

NSSortDescriptor *sortByName = [NSSortDescriptor sortDescriptorWithKey:@"name"
    ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:sortByName];
NSArray *sortedArray = [array sortedArrayUsingDescriptors:sortDescriptors];

The other way to achieve this would be using sortedArrayUsingComparator: method

NSArray *sortedArray = [array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
    return [[obj1 valueForKey:@"value"] compare:[obj2 valueForKey:@"value"]];
}];

why don't you use a sorted dictionary where the property of sorted elements comes already with the data structure?

Please do check it out here

Hope this helps.

The above shared answer by Bavarious helped me.Just want to add one more thing.If you want to sort a mutable array use something like the below code

NSSortDescriptor *sortByName = [NSSortDescriptor sortDescriptorWithKey:@"name" ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:sortByName];
NSMutableArray *sortedArray = [[NSMutableArray sortedArrayUsingDescriptors:sortDescriptors]mutableCopy];

 let arrDescriptor = NSSortDescriptor(key: "order", ascending: true)
 let sortDescriptors: NSArray = [arrDescriptor]
 let sortedArray = instancesubArray.sortedArray(using: sortDescriptors as [AnyObject] as [AnyObject] as! [NSSortDescriptor])

 print(sortedArray)