I want a view to move up when toggling the keyboard. It works in all my other views but in this one it doesn't work. It says "unexpectedly found nil while unwrapping an Optional value"
Here is my code:
class SecondViewController: UIViewController , UIPickerViewDelegate, UIPickerViewDataSource{
@IBOutlet var ScrollView: UIScrollView!
@IBOutlet weak var codeaffiche: UILabel!
@IBOutlet var Prix: UITextField!
@IBOutlet var NomProduit: UITextField!
@IBOutlet var picker1: UIPickerView!
@IBOutlet var NomMAG: UITextField!
var nom_magasin :String!
var pickerData = [String]()
var pickerDataRow = [String]()
override func viewDidLoad() {
super.viewDidLoad()
codeaffiche.text = detectionString
NomMAG.alpha = 0
let str = "http://vps43623.ovh.net/yamoinscher/api/getAllMag"
let url = NSURL(string: str)!
let task = NSURLSession.sharedSession().dataTaskWithURL(url) { (data, response, error) -> Void in
if let urlContent = data {
do {
let jsonObject = try NSJSONSerialization.JSONObjectWithData(urlContent, options: [])
if let jsonResult = jsonObject as? [String:AnyObject],
magasin = jsonResult["magasin"] as? [[String:String]] {
// filter valid items, map them to an array and filter empty strings
self.pickerData = magasin.filter { $0["libelle"] != nil }.map { $0["libelle"]! }.filter { !$0.isEmpty}
self.pickerDataRow = magasin.filter { $0["id"] != nil }.map { $0["id"]! }.filter { !$0.isEmpty}
self.pickerData.append("choisir magasin")
}
dispatch_async(dispatch_get_main_queue()) {
self.picker1.reloadAllComponents()
}
} catch {
print("JSON serialization failed", error)
}
} else if let connectionError = error {
print("connection error", connectionError)
}
}
task.resume()
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
ScrollView.keyboardDismissMode = .OnDrag
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
func textFieldDidBeginEditing(textField: UITextField) {
if textField == NomMAG {
ScrollView.setContentOffset(CGPointMake(0, 250), animated: true)
}
}
func textFieldDidEndEditing(textField: UITextField) {
if textField == NomMAG {
ScrollView.setContentOffset(CGPointMake(0,0), animated: true)
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// The number of columns of data
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
// The number of rows of data
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return self.pickerData.count
}
// The data to return for the row and component (column) that's being passed in
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return self.pickerData[row]
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerData[row] == "choisir magasin"
{
//print(row)
NomMAG.alpha = 1
nom_magasin = NomMAG.text
}
else
{
//print(row.description)
NomMAG.alpha = 0
nom_magasin = pickerData[row]
}
}
@IBAction func AddProduct(sender: AnyObject) {
let myUrl = NSURL(string: "http://vps43623.ovh.net/yamoinscher/ios/products/addIos");let request = NSMutableURLRequest(URL:myUrl!);
request.HTTPMethod = "POST";
// Compose a query string
let postString = "code_barre=\(detectionString!)&&libelle=\(NomProduit.text!)&nom_magasin=\(nom_magasin!)&prix=\(Prix.text!)"
let postLength = String(postString.characters.count)
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
request.setValue(postLength, forHTTPHeaderField: "Content-Length")
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.setValue("application/json", forHTTPHeaderField: "Accept")
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil
{
print("error=\(error)")
return
}
// print out response object
print("response = \(response)")
// Print out response body
let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("responseString = \(responseString)")
}
task.resume()
}
}
