API calls through Switch Statements - ios

Question

I have two tableViews, The first table view has fixed data which never will be changed. When a user taps on a specific cell for example cell number 1, an API 1 is called and the 2nd table view is loaded with the returned data when cell number 2 is tapped API 2 is called the 2nd table view is loaded with the returned data.
To solve this issue I have tried this.
In my first Table View I record of which table cell was tapped and send that information to the 2nd table view via prepare for segue:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if let destination = segue.destinationViewController as? BioListTableViewController {
let indexPath = self.tableView.indexPathForSelectedRow()
if let row:Int = indexPath?.row {
// PASS which cell was tapped by the user
destination.cellTapped = row
}
}
}
Then within my 2nd table view I use a switch statement which checks whether the cell tapped was 0,1,2 and so on. And based on that a switch case is run. Each switch case has a different function which calls a different API. See below:
import UIKit
struct Note {
var name:String
var job:String
}
struct WeatherSummary {
var id: String
}
class BioListTableViewController: UITableViewController {
var cellTapped = Int()
#IBOutlet var tableview: UITableView!
private var notes = Array<Note>()
var bioArray = NSArray(){
didSet{
tableview.reloadData()
}
}
override func viewDidLoad() {
super.viewDidLoad()
switch cellTapped {
case 0:
test()
case 1:
testTwo()
default:
println("Error")
}
var newItem:Note = Note(name: "", job: "")
for x in bioArray {
if let id = x["employeeName"] as? String{
newItem.name = id
}
}
}
func test() {
println("This is TWEST")
var weatherArray = [WeatherSummary]()
var request = NSMutableURLRequest(URL: NSURL(string: "myAPI-Link")!)
var session = NSURLSession.sharedSession()
request.HTTPMethod = "GET"
UIApplication.sharedApplication().networkActivityIndicatorVisible = true
var err: NSError?
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
println("Response: \(response)")
var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Body: \(strData)")
var err: NSError?
var json = NSJSONSerialization.JSONObjectWithData(data, options: .MutableLeaves, error: &err) as? NSArray
UIApplication.sharedApplication().networkActivityIndicatorVisible = true
// Did the JSONObjectWithData constructor return an error? If so, log the error to the console
if(err != nil) {
println(err!.localizedDescription)
let jsonStr = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Error could not parse JSON: '\(jsonStr)'")
dispatch_async(dispatch_get_main_queue()) {
var alert = UIAlertController(title: "Alert", message: "Oops! Wrong Details, Try Again", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}
}else {
UIApplication.sharedApplication().networkActivityIndicatorVisible = false
// The JSONObjectWithData constructor didn't return an error. But, we should still
// check and make sure that json has a value using optional binding.
var newWeather = WeatherSummary(id:"")
if let parseJSON = json {
for weather in parseJSON {
if let id = weather["employeeName"] as? String{
println(" LOOK HERE \(id)")
newWeather.id = id
}
}
weatherArray.append(newWeather)
self.bioArray = parseJSON
} else {
// Woa, okay the json object was nil, something went worng. Maybe the server isn't running?
let jsonStr = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Error could not parse JSON: \(jsonStr)")
}
}
})
task.resume()
}
func testTwo(){
println("THIS IS TEST 2")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return self.bioArray.count ?? 0
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("bioCell", forIndexPath: indexPath) as! UITableViewCell
let weatherSummary: AnyObject = bioArray[indexPath.row]
if let id = weatherSummary["employeeName"] as? String //Dont know the exact syntax.
{
cell.textLabel?.text = id
}
if let job = weatherSummary["jobTitle"] as? String {
cell.detailTextLabel?.text = job
}
return cell
}
}
My Issue:
My Issue is that when I println the returned data it is being printed and I can see it. But my 2nd table view is empty. It does not display the data. I am not sure why the data is not being displayed on the 2nd table view. I can see the data by using println which proves that the API is actually returning real data.
Any suggestions?
Apologies for any mistakes. Please let me know if I have made a mistake and I will fix it.
Thank you.

Answer 1

Hard to answer this without seeing the data or the Storyboard. But a few things you should check set a breakpoint and make sure it is calling:
didSet method of bioArray
is numberOfRowsInSection hit and returning something?
is the delegate and datasource set properly?
is cellForRowAtIndexPath hit and do you have keys named: employeeName and jobTitle
Please check these things first.

Answer 2

I figured out how to fix the issue. Thought I would answer my own question.
Basically I had to reload my table view to display the data.
So I did the following:
didSet{
dispatch_async(dispatch_get_main_queue()) {
self.tableview.reloadData()
}
}
By doing the above my issue was solved. Once I tapped the cell, it took a few seconds but it reloaded my table view once the data was returned from the API and displayed it.