CODEWITHSUNDEEP
iosswiftdictionary
Alamin
Alamin

Reputation: 887

Can't present data in table view cell

I am trying to retrive each row from database and keep value in dictionary. After that I have created a array of dictionary. But when i am trying to show each value of dictionary in table cell, i can't . Here is my code 

class ViewController: UIViewController,UITableViewDataSource,UITableViewDelegate {
   var borrowerInformation:NSMutableDictionary? = NSMutableDictionary();
   var borrowerName:String = ""
   var givenDate:String = ""
   var borrower:NSMutableArray = []

   override func viewDidLoad() {
      super.viewDidLoad()
      dataQuery()
   }
  func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
    return self.borrower.count

  }
   func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{

      let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! BorrowerLanderTableViewCell

      cell.borrowerName.text = self.borrower[indexPath.row]  as? String

     return cell
  }

  func dataQuery(){
    let queryBorrower = PFQuery(className:"BorrowerLander")
    queryBorrower.whereKey("borrowerLander", equalTo: 0)
    queryBorrower.whereKey("userId", equalTo: (PFUser.currentUser()?.objectId)!)
    queryBorrower.findObjectsInBackgroundWithBlock {
        (objects: [PFObject]?, error: NSError?) -> Void in
        self.borrower = NSMutableArray()
        if error == nil {
            if let borrowerData = objects {
                for object in borrowerData {
                    self.borrowerName = object["name"] as! String
                    self.givenDate = object["givenDate"] as! String
                    self.borrowerInformation = [ "borrowerName": self.borrowerName,"givenDate":"self.givenDate"]
                    self.borrower.addObject(self.borrowerInformation!)
                }
            }


        } 
        self.tableview.reloadData()
    }
 }
}

Here, i have just added main part of the code. Please tell me how can i show value of array of the dictionary in table view cell?

Upvotes: 1

Views: 95

Answers (3)

Moriya
Moriya

Reputation: 7906

I don't know how you did the setup but an issue could be that you have not set your tableviews delegate and datasource to the controller you are working with.

self.tableView.dataSource = self
self.tableView.delegate = self

I'm also wondering if you did implement the numberOfRows and numberOfSections delegate methods. 

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return borrower.count
}

and 

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
}

Also when setting the text you need to actually use the name string you added to the dictionary

let borrower = self.borrower[indexPath.row]
if let name = borrower["borrowerName"] as? String{
    cell.borrowerName.text = name
} esle {
    cell.borrowerName.text = "error" 
}

Also declare your data array as 

var borrower:[[String: AnyObject]] = []

Extra edit:

I do want to say that I really think you should use a custom object here instead of an dictionary

class Borrower {
    var name: String
    var givenDate: String
//etc.
    init(name: String, givenDate: String) {
        self.name = name
        self.givenDate = givenDate
    }
}

enabling the following

var borrower:[Borrower] = []

and in the query:

for object in borrowerData {
    if let name = object["name"] as? String, givenDate = object["givenDate"] as? String {
        self.borrower.append(Borrower(name: name, givenDate: giverDate))
    }
}

Upvotes: 2

Matt Long
Matt Long

Reputation: 24466

First, make sure you've set the dataSource and delegate for your table view to your view controller. Then, the function tableView:cellForRowAtIndexPath: will never get called unless you implement tableView:numberOfRowsInSection. The default implementation of that function returns 0. Try implementing this:

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return borrower.count
}

Also, if the code inside of queryBorrower.findObjectsInBackgroundWithBlock { is actually in the background, you need to dispatch your table view reload to the main thread. Like this:

dispatch_async(dispatch_get_main_queue(), { [weak self] () -> Void in
    self?.tableView.reloadData()
})

Upvotes: 1

dichen
dichen

Reputation: 1633

You need to implement numberOf... dataSource delegate first:

override func numberOfSectionsInTableView(tableView: UITableView) -> Int 

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int

Upvotes: 0

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