将 JSON 响应附加到表视图 -Swift
Append JSON response to tableview -Swift
我正在调用 returns 用户信用卡的 json 响应的 PFCloud 函数,我想显示一些卡数据。我有一个我试图追加的数组,但它无法显示。我在 viewDidLoad 中调用了这个函数。
func loadCards(){
if let customer = PFUser.currentUser()?.objectForKey("stripe_customer_id") as? String {
PFCloud.callFunctionInBackground("listCards", withParameters: ["customerId": customer], block: { (success: AnyObject?, error: NSError?) -> Void in
if error != nil {
println(error)
}
else {
let responseString = success as? NSArray
if let cardToDisplay = responseString!.valueForKey("cardId") as? NSArray{
println(cardToDisplay)
self.displayCards.addObject(cardToDisplay)
}
self.tableView.reloadData()
}
})
}
}
// 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.
println(self.displayCards.count)
return self.displayCards.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: CardsTableViewCell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! CardsTableViewCell
self.displayCards[indexPath.row] = cell.card.text!
return cell
}
这是我在控制台的日志:
0
0
0
0
0
0
(
"card_16v8teBnRIkk4qBepmuz2Mlk",
"card_16ymjoBnRIkk4qBeirtCdYdn",
"card_16ymfzBnRIkk4qBebvP4wwNO",
"card_16ymfzBnRIkk4qBeoRUVccws",
"card_16ymaPBnRIkk4qBeK2ju6ckP",
"card_16ylqyBnRIkk4qBeffUN2bwo",
"card_16ylq3BnRIkk4qBePGngNz8H"
)
1
您需要在主线程中重新加载 tableView。当你进入后台发出请求时,你需要做:
dispatch_async(dispatch_get_main_queue()) { () -> Void in
self.tableView.reloadData()
}
而不只是 self.tableView.reloadData()
cardToDisplay
好像是数组,所以把self.displayCards.addObject(cardToDisplay)
改成self.displayCards = cardToDisplay
cellForRowAtIndexPath
中的行 self.displayCards[indexPath.row] = cell.card.text!
应该是相反的。您应该将文本设置为 self.displayCards[indexPath.row]
。所以应该是cell.card.text = self.displayCards[indexPath.row]
我正在调用 returns 用户信用卡的 json 响应的 PFCloud 函数,我想显示一些卡数据。我有一个我试图追加的数组,但它无法显示。我在 viewDidLoad 中调用了这个函数。
func loadCards(){
if let customer = PFUser.currentUser()?.objectForKey("stripe_customer_id") as? String {
PFCloud.callFunctionInBackground("listCards", withParameters: ["customerId": customer], block: { (success: AnyObject?, error: NSError?) -> Void in
if error != nil {
println(error)
}
else {
let responseString = success as? NSArray
if let cardToDisplay = responseString!.valueForKey("cardId") as? NSArray{
println(cardToDisplay)
self.displayCards.addObject(cardToDisplay)
}
self.tableView.reloadData()
}
})
}
}
// 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.
println(self.displayCards.count)
return self.displayCards.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: CardsTableViewCell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! CardsTableViewCell
self.displayCards[indexPath.row] = cell.card.text!
return cell
}
这是我在控制台的日志:
0
0
0
0
0
0
(
"card_16v8teBnRIkk4qBepmuz2Mlk",
"card_16ymjoBnRIkk4qBeirtCdYdn",
"card_16ymfzBnRIkk4qBebvP4wwNO",
"card_16ymfzBnRIkk4qBeoRUVccws",
"card_16ymaPBnRIkk4qBeK2ju6ckP",
"card_16ylqyBnRIkk4qBeffUN2bwo",
"card_16ylq3BnRIkk4qBePGngNz8H"
)
1
您需要在主线程中重新加载 tableView。当你进入后台发出请求时,你需要做:
dispatch_async(dispatch_get_main_queue()) { () -> Void in self.tableView.reloadData() }
而不只是
self.tableView.reloadData()
cardToDisplay
好像是数组,所以把self.displayCards.addObject(cardToDisplay)
改成self.displayCards = cardToDisplay
cellForRowAtIndexPath
中的行self.displayCards[indexPath.row] = cell.card.text!
应该是相反的。您应该将文本设置为self.displayCards[indexPath.row]
。所以应该是cell.card.text = self.displayCards[indexPath.row]