How to modify plist in swift

Question

I want to be able to modify values from my plist in swift but I'm having trouble figuring it out. So far I can read the values in my array but that's it.

var playersDictionaryPath = NSBundle.mainBundle().pathForResource("PlayersInfo", ofType: "plist")

var playersDictionary = NSMutableDictionary(contentsOfFile: playersDictionaryPath!)

var playersNamesArray = playersDictionary?.objectForKey("playersNames")? as NSArray

[println(playersNamesArray)][1]

if the `plist` is part of the bundle, you can't; but if you copy it into the `Documents` folder and you can update it there. — holex, Mar 06 '15 at 11:51

score 6 · Answer 1 · edited Dec 02 '21 at 07:49

Firstly, you can't write to a plist file inside your app resources. So you will need to save your edited plist to another directory. Like your NSDocumentDirectory.

As in this answer mentioned you can get the document-path like that:

let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString

But to answer your question, you can edit an NSMutableDictionary like that:

//add entries:
playersDictionary.setValue("yourValue", forKey: "yourKey")

//edit entries:
playersDictionary["yourKey"] = "newValue" //Now has value 'newValue'

//remove entries:
playersDictionary.removeObjectForKey("yourKey")

If you want to edit your NSArray on the other hand, you should use an NSMutableArray instead.

We can't write to custom plist in our bundle? – Rhenz Jun 02 '17 at 09:15 — Rhenz, Jun 02 '17 at 09:15

score 3 · Answer 2 · answered Mar 06 '15 at 11:41

I found how to do it:

    var playersDictionaryPath = NSBundle.mainBundle().pathForResource("PlayersInfo", ofType: "plist")

    var playersDictionary = NSMutableDictionary(contentsOfFile: playersDictionaryPath!)

    var playersNamesArray = playersDictionary?.objectForKey("playersNames")? as NSMutableArray

    //this is a label I have called player1Name
    playersNamesArray[0] = "\(player1Name.text)"

    playersDictionary?.writeToFile(playersDictionaryPath!, atomically: true)

btw, thanks for the NSMutableArray, I wasn't thinking about that.

can you edit the background capabilities in the info.plist file? — FerasAS, Nov 30 '17 at 13:32

How to modify plist in swift

2 Answers2