Swift: Watchkit Table not populating - ios

Question

This is an app that I already made for iPhone and want to make it available for the apple watch.
I have a function that uses SwiftyJSON to parse a JSON and collect various information that I use to populate my table. In willActiviate I loop through all of my rows and index them to get the information I need to display on the label. Or at least, that's what I'm trying to do. When I run it, the correct amount of labels are shown, but the labels do not display anything. I've also created loadTableData() to manually reload the tableData.
If I'm doing something completely wrong when trying to populate it, or if I'm doing something else wrong, a little point in the right direction would be appreciated.
My code:
#IBOutlet weak var earthTable: WKInterfaceTable!
private func loadTableData() {
getEarthquakeInfo { (info) in
self.earthTable.setNumberOfRows(0, withRowType: "earthquake")
self.earthTable.setNumberOfRows(info.count, withRowType: "earthquake")
}
}
override func awakeWithContext(context: AnyObject?) {
super.awakeWithContext(context)
self.loadTableData()
}
override func willActivate() {
// This method is called when watch view controller is about to be visible to user
super.willActivate()
for index in 0..<self.earthTable.numberOfRows {
var currentRow = self.earthTable.rowControllerAtIndex(index) as earthquakeViewController
let time = info[self.earthTable.indexOfAccessibilityElement(currentRow)].time
let mag = info[self.earthTable.indexOfAccessibilityElement((currentRow))].mag
let title = info[self.earthTable.indexOfAccessibilityElement(currentRow)].title
currentRow.titleLabel.setText("\(title)")
currentRow.timeLabel.setText("\(time)")
currentRow.magLabel.setText("\(mag)")
}
}
override func didDeactivate() {
// This method is called when watch view controller is no longer visible
super.didDeactivate()
}
}
My entire function where I parse the JSON if needed:
class InterfaceController: WKInterfaceController {
var info = [AppModel]()
func getEarthquakeInfo(completion: (results : [AppModel]) ->Void ){
DataManager.getEarthquakeDataFromFileWithSuccess {
(data) -> Void in
let json = JSON(data: data)
if var JsonArray = json.array {
JsonArray.removeAtIndex(0)
for appDict in JsonArray {
// parsing
var ids: String? = appDict["id"].stringValue
var title: String? = appDict["title"].stringValue
var time: String = appDict["time"].stringValue
var lattitude: String? = appDict["lat"].stringValue
var longitude: String? = appDict["lng"].stringValue
var north: String? = appDict["north"].stringValue
var west: String? = appDict["west"].stringValue
var mag: String? = appDict["mag"].stringValue
var depth: String? = appDict["depth"].stringValue
var timeStamp: String? = appDict["timestamp"].stringValue
// Splitting up title string into 2 parts
let newString = title!.stringByReplacingOccurrencesOfString(" ", withString: " - ", options: NSStringCompareOptions.LiteralSearch, range: nil)
var title2strings = newString.componentsSeparatedByString(" - ")
var scale = title2strings[0]
var location = title2strings[1]
// replacing M in scale string with Richter Scale
let scaleString = scale.stringByReplacingOccurrencesOfString("ML", withString: "Magnitude", options: NSStringCompareOptions.LiteralSearch, range: nil)
let scaleString2 = scaleString.stringByReplacingOccurrencesOfString("mb", withString: "Magnitude", options: NSStringCompareOptions.LiteralSearch, range: nil)
let scaleString3 = scaleString2.stringByReplacingOccurrencesOfString("Mw", withString: "Magnitude", options: NSStringCompareOptions.LiteralSearch, range: nil)
let scaleString4 = scaleString3.stringByReplacingOccurrencesOfString("MD", withString: "Magnitude", options: NSStringCompareOptions.LiteralSearch, range: nil)
let scaleString5 = scaleString4.stringByReplacingOccurrencesOfString("M ", withString: "Magnitude ", options: NSStringCompareOptions.LiteralSearch, range: nil)
//Formatting the date
var date = NSDate(dateString: time).getDatePart()
// Collecting all the information
var information = AppModel(idEarth: ids, title: title, time: date, lat: lattitude, lng: longitude, north: north!, west: west, mag: mag, depth: depth, timeStamp: timeStamp, location: location, scale: scaleString5)
self.info.append(information)
//sorting array by highest magnitude
// self.info.sort({$0.mag > $1.mag})
// returning the completion handler
completion(results: self.info)
}
}
}
}
My AppModel file that I used (if needed):
import Foundation
import WatchKit
class AppModel: NSObject, Printable {
let idEarth: String
let title: String
let time: String
let lat: String
let lng: String
let north: String
let west: String
let mag: String
let depth: String
let timeStamp: String
let scale: String
let location: String
override var description: String {
return "ID: \(idEarth), TITLE: \(title), TIME: \(time), LAT: \(lat), LNG: \(lng), NORTH: \(north), WEST: \(west), MAG: \(mag), DEPTH: \(depth), TIMESTAMP: \(timeStamp), LOCATION: \(location), SCALE: \(scale) \n"
}
init(idEarth: String?, title: String?, time: String?, lat: String?, lng: String?, north: String, west: String?, mag: String?, depth: String?, timeStamp: String?, location: String?, scale: String?) {
self.idEarth = idEarth ?? ""
self.title = title ?? ""
self.time = time ?? ""
self.lat = lat ?? ""
self.lng = lng ?? ""
self.north = north ?? ""
self.west = west ?? ""
self.mag = mag ?? ""
self.depth = depth ?? ""
self.timeStamp = timeStamp ?? ""
self.location = location ?? ""
self.scale = scale ?? ""
}
}

Answer 1

I think that your problem is that you are trying to populate your tableView in willActivate but you are not even sure that you already have the data (your completion handler from getEarthquakeInfo may not be reached).
You should try to set up your cells just after you set the number of rows.
And by the way, why are you setting two times the number or rows?
Try something like this
#IBOutlet weak var earthTable: WKInterfaceTable!
private func loadTableData() {
getEarthquakeInfo { (info) in
self.earthTable.setNumberOfRows(info.count, withRowType: "earthquake")
//Create cells
for index in 0..<self.earthTable.numberOfRows {
var currentRow = self.earthTable.rowControllerAtIndex(index) as earthquakeViewController
let time = info[self.earthTable.indexOfAccessibilityElement(currentRow)].time
let mag = info[self.earthTable.indexOfAccessibilityElement((currentRow))].mag
let title = info[self.earthTable.indexOfAccessibilityElement(currentRow)].title
currentRow.titleLabel.setText("\(title)")
currentRow.timeLabel.setText("\(time)")
currentRow.magLabel.setText("\(mag)")
}
}
}
override func awakeWithContext(context: AnyObject?) {
super.awakeWithContext(context)
self.loadTableData()
}
override func willActivate() {
// This method is called when watch view controller is about to be visible to user
super.willActivate()
}
override func didDeactivate() {
// This method is called when watch view controller is no longer visible
super.didDeactivate()
}
}