SWIFT - reload UITableViewCell - uitableview

Question

I have run into a problem when trying to reload my UITableView from within my TimersManager.swift file. The TimersManager.swift is used to control/manage all the timers in my to-do list/timers app. I am trying to update the UILabel to show the updated time as the timer ticks away. For some reason it will not update the table. Please have a look below and hopefully you can give me a nudge in the right direction. Thanks.
top of listTableViewController.swift:
var prepMgr: listTableViewController = listTableViewController()
var cell:customCell!
class listTableViewController: UITableViewController, UITableViewDelegate, UITableViewDataSource {
update func in listTableViewController: (this is called by another func in my TimersManager.swift file)
func update (indexPathRow: Int) {
for task in taskMgr.tasks {
if task.timerOn == true {
//calculate the time to display in 0:00:00 format.
let date1 : NSDate = task.timerFinishDate
let date2 : NSDate = NSDate()
let compareResult = date1.compare(date2)
let length = Int(round(date1.timeIntervalSinceDate(date2)))
var tmpHours = length / 3600
var tmpMinutes = (length % 3600) / 60
var tmpSeconds = length % 60
var timeString = "\(tmpHours):\(tmpMinutes):\(tmpSeconds)"
println(task.subText) //test, display old value before update - WORKS
taskMgr.updateTask(indexPathRow, name: taskMgr.tasks[indexPathRow].name, subText: timeString, timerOn: taskMgr.tasks[indexPathRow].timerOn, completed: taskMgr.tasks[indexPathRow].completed, timerFinishDate: taskMgr.tasks[indexPathRow].timerFinishDate, taskID: taskMgr.tasks[indexPathRow].taskID, sliderHours: taskMgr.tasks[indexPathRow].sliderHours, sliderMinutes:taskMgr.tasks[indexPathRow].sliderMinutes, sliderSeconds: taskMgr.tasks[indexPathRow].sliderSeconds)
println(task.subText) //test, display updated value after update - WORKS
println(timeString) //test, display time remaining in timer 0:00:00 - WORKS
}
self.tableView.reloadData() // DOES NOT UPDATE TABLE.
}
}
the code for the NSTimer selector in TimersManager.swift:
func tickTock (length:NSTimer!) {
println(length.userInfo)
var count = 0
for timer in timers {
let date1 : NSDate = timer.fireDate
let date2 : NSDate = NSDate()
let compareResult = date1.compare(date2)
let length = Int(round(date1.timeIntervalSinceDate(date2)))
if length <= 0 {
//Invalidate NSTimer
timer.myTimer.invalidate()
//Remove from array
timers.removeAtIndex(count)
}
count++
println(length) //test, shows how many seconds are left - WORKS
//update labels.
prepMgr.update(timer.indexPathRow) //Call to listTableViewController func - Half working, calls the function. updates the correct task. But table is not reloaded.
}
//update labels, reload table
prepMgr.tableView.reloadData() //Test, Not working
}

Answer 1

You could also use a NSNotification to handle the "Reload Function" of the Table. And just call them if you need an update of your table.