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iOS

Posted by Aaron Watkins
Aaron Watkins
10,902 Points

Sort Array by date: Swift + Parse.com

Hi all!

I am looking to sort an array by date. I have combined an array from two different classes. The issue is that the objects from the second class are at the end of the array. I want all objects in the array to be sorted by the date on which they were created (i.e., createdAt date). I cannot figure out how to do this. When I print the combined array I all of the items in both of the individual arrays, but no "createdAt" key to sort on. Would anyone have any ideas on how to do this?

3 Answers

Aaron Watkins
Aaron Watkins
10,902 Points

thanks Jason.

I wound up doing this

combinedArray = array1 + array2 + array3
var descriptor: NSSortDescriptor = NSSortDescriptor(key:"createdAt", ascending: false)
sortedResults = combinedArray.sortedArrayUsingDescriptors([descriptor])

This worked, but problem I'm having now is that I can tell that the tableview objects are not in the right order when an object from a different array is inserted. For example,

cell 0: contains an object from array1. When I click on that cell, it takes me to a detail view with information for cell 0 cell 1: contains an object from array2. When I click on that cell, it takes me to a detail view with information for cell 2 (should be information from cell 1). ...

So the objects keep getting displaced every time an object from a new array is inserted into the list. Have you come across this?

thanks again for your help.

jason phillips
jason phillips
18,131 Points
jason phillips
jason phillips
18,131 Points

Can you do something like:

array.sort({$0.createdAt > $1.createdAt })