How do I parse JSON data into a table view? - ios

Question

all Im a noob at swift lets just set the record,
Im trying to parse JSON data from an external php file and display the data in a tableview, the data is from a php file hosted elsewhere, its values are
{
'id' : '1',
'username' : 'test',
'password' : 'test',
'email' : 'test#test.com'
}
My code is as follows
class ForuthTableViewController: UITableViewController {
#IBOutlet var userTable: UITableView!
#IBOutlet weak var refreshButton: UIBarButtonItem!
var values:NSArray = []
override func viewDidLoad() {
super.viewDidLoad()
getUsers()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
#IBAction func refreshPressed(_ sender: UIBarButtonItem) {
getUsers()
}
func getUsers(){
let url = NSURL(string: "http://xxx.xxxxxx.xx/get.php")
let userdata = NSData(contentsOf: url! as URL)
do {
values = try JSONSerialization.jsonObject(with: userdata as! Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSArray
print("Parse success")
} catch {
print("Parse error")
return
}
print(values)
//userTable.reloadData()
}
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return values.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return 0
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let cell = tableView.dequeueReusableCellWithIdentifier("userCell", forIndexPath: indexPath) as! UITableViewCell
let maindata = values[indexPath.row]
cell.username.text = maindata["username"] as? String
cell.password.text = maindata["password"] as? String
cell.email.text = maindata["email"] as? String
return cell
}
}
I followed a tutorial on youtube of creating a login / register app but it was from an old version of xcode and when I copy the code across theres errors everywhere so not sure where to start,
Tried looking for a simple JSON tutorial but there are so many different ways to approach JSON I'm not sure which is the right one.
Any ideas would be appreciated, or perhaps a simple fix.

Answer 1

got an error "Errors thrown from here not handled" : Catch the error.
do {
values = try JSONSerialization.jsonObject(with: userdata as! Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSArray
print("Parse success")
} catch {
print("Parse error")
print("Error: \(error)")
}
error "IndexPath not resolved" :
You are using method numberOfRowsInSection instead of cellForRowAtIndexPath.
Also override both methods.
Edit 1:
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
should be:
override func tableView(_ tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return values.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "userCell", for: indexPath) as! UITableViewCell
let maindata = values[indexPath.row]
cell.username.text = maindata["username"] as? String
cell.password.text = maindata["password"] as? String
cell.email.text = maindata["email"] as? String
return cell
}