How to convert an NSArray from Obj-C to Array in Swift?

Question

Yes, I know the title seems a bit to obvious, and can easily be searched for the solution. I know how to convert a 1-D NSArray to an Array, that is simple enough.

However, that is not my issue, as my NSArray is different. Please see the following code

NSArray *artists;

artists = @[@"Performed by: Legendary Group", @"Performed by: Ivan Cheong",
          @"Performed by: Tien Nguyen", @"", @[@"Performed by: DJ Happee From 
            Channel 3.3", @"Performed by: Adam Cease", @""], 
            @"Performed by: Music Between California and Summer", @""];

Then in cellForRowAtIndexPath, I was about to access it like so:

- (UITableViewCell *)tableView:(UITableView *)tableView 
   cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ...
    if ( [ [artists[indexPath.section] objectAtIndex:indexPath.row] 
                isEqualToString:@""] )
    {
        ....
    }
}

As you can clearly see, my NSArray contains another array at index 4. I require this for trivial purposes.

I would like to know is it possible to convert my NSArray to a Swift standard Array type?

I have tried to implement the equivalent:

var temp = NSArray()

let artists = ["Performed by: Legendary Group", "Performed by: Ivan Cheong",   
           "Performed by: Tien Nguyen", "", ["Performed by: DJ Happee From 
        Channel 3.3", "Performed by: Adam Cease", ""], "Performed by: Music 
             Between California and Summer", ""]

temp = artists

This works properly as I want, however, this is not up to Swift 2.0's coding standards.

I want to use an Array, but I don't know if this is possible?

Thanks

jglasse · Accepted Answer · 2016-01-29 19:52:25Z

1

Create an array of AnyObjects:

let artists: [AnyObject] = ["Performed by: Legendary Group", "Performed by: Ivan Cheong",
    "Performed by: Tien Nguyen", "", ["Performed by: DJ Happee From Channel 3.3", "Performed by: Adam Cease", ""], "Performed by: Music Between California and Summer", ""]

Then check the type of each item in your tableView function and handle accordingly:

 func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell {

        switch artists.indexPath {
        case is String: //handle string
        case is NSArray: //handle array
        default: //trap other stuff


        }
       }

edited Jan 29, 2016 at 19:52

answered Jan 29, 2016 at 9:29

jglasse

1,20613 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

Pangu Over a year ago

Please see how I initialized the NSArray artists carefully. I have defined an array within an array, and I am having trouble translating "that" array to Swift. It would be easy for me to translate it to Swift if it was a 1-D array, as you have shown, but it's not 1-D. I have updated my question for clarity.

jglasse Over a year ago

I'm not clear on why you have an array in an array here. Can you explain?

Pangu Over a year ago

I use it to display a schedule of events, however, that is irrelevant to my issue.

jglasse Over a year ago

Edited to address your issue. Hope this helps.

Pangu Over a year ago

There's no way to directly achieve this with Array type conversion?

|

Collectives™ on Stack Overflow

How to convert an NSArray from Obj-C to Array in Swift?

1 Answer 1

6 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

6 Comments

Your Answer

Sign up or log in

Post as a guest

Related