iosuitableviewswift2nsuserdefaultsnsindexpath

How to add NSIndexPath to NSUserDefaults in swift

I am trying to save NSIndexPath at NSUserDefaults, but got the following exception:-

Attempt to set a non-property-list object {length = 2, path = 0 - 12} as an NSUserDefaults/CFPreferences value for key LastSelectedIndeX

My code:-

let selectedIndexPath = tableView.indexPathForSelectedRow
   NSUserDefaults.standardUserDefaults().setObject(selectedIndexPath, forKey: "lastSelectedIndex")
   NSUserDefaults.standardUserDefaults().synchronize()

So how can I save NSIndexPath so that I can use it later on at another view controller.

Solution

  • You can't save directly indexPath in NSUserDefault. You can Store NSArray , NSDictionary , NSNumber , NSString and NSDictionary in NSUserDefault.

    Store IndexPath using NSKeyedArchiver:

    let data = NSKeyedArchiver.archivedDataWithRootObject(selectedIndexPath)
NSUserDefaults.standardUserDefaults().setObject(data, forKey: "indexKey")

    Get IndexPath using NSKeyedArchiver:

    let data1 = NSUserDefaults.standardUserDefaults().objectForKey("indexKey") as? NSData
let indexP1 = NSKeyedUnarchiver.unarchiveObjectWithData(data1!) as! NSIndexPath