我在swift中使用Array
加載我的UITableView
。我想要做的是在表已經加載我的數組應該是空的(想要刪除陣列中的所有對象,然後它加載另一個數據集來加載另一個表視圖)如何知道UITableView已經完成加載數據swift
我想要做的是添加幾個UItables dinamically到UIScrollView
並且最初將所有數據加載到每個UITableView
。然後用戶可以水平滾動滾動視圖並查看其他表。因此,我正在做這樣的事情。
for i in 0..<dm.TableData.count {
self.catID=self.dm.TableData[i]["term_id"] as? String
self.jsonParser()
}
那麼這是我的jsonParser
func jsonParser() {
let urlPath = "http://www.liveat8.lk/mobileapp/news.php?"
let category_id=catID
let catParam="category_id"
let strCatID="\(catParam)=\(category_id)"
let strStartRec:String=String(startRec)
let startRecPAram="start_record_index"
let strStartRecFull="\(startRecPAram)=\(strStartRec)"
let strNumOfRecFull="no_of_records=10"
let fullURL = "\(urlPath)\(strCatID)&\(strStartRecFull)&\(strNumOfRecFull)"
print(fullURL)
guard let endpoint = NSURL(string: fullURL) else {
print("Error creating endpoint")
return
}
let request = NSMutableURLRequest(URL:endpoint)
NSURLSession.sharedSession().dataTaskWithRequest(request) { (data, response, error) in
do {
guard let data = data else {
throw JSONError.NoData
}
guard let json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? NSDictionary else {
throw JSONError.ConversionFailed
}
print(json)
if let countries_list = json["data"] as? NSArray
{
for (var i = 0; i < countries_list.count ; i++)
{
if let country_obj = countries_list[i] as? NSDictionary
{
//self.TableData.append(country_obj)
self.commonData.append(country_obj)
}
}
//self.updateUI()
if self.commonData.isEmpty
{
}
else
{
self.updateUI()
}
}
} catch let error as JSONError {
print(error.rawValue)
} catch let error as NSError {
print(error.debugDescription)
}
}.resume()
}
然後UpdateUI()
func updateUI()
{
print("COMMON DATA ARRAY\(self.commonData)")
// print("NEWS DATA ARRAY\(self.newsNews)")
//print("SPORTS DATA ARRAY\(self.sportsNews)")
let tblY:CGFloat=segmentedControl.frame.origin.y+segmentedControl.frame.size.height
tblNews=UITableView.init(frame: CGRectMake(x,0 , self.screenWidth, self.screenHeight-tblY))
tblNews.tag=index
tblNews.delegate=self
tblNews.dataSource=self
tblNews.backgroundColor=UIColor.blueColor()
self.mainScroll.addSubview(tblNews)
x=x+self.screenWidth
index=index+1
tblNews.reloadData()
}
`UITableView` use this `commonData` array as the data source. Now when I scroll table view data load with previous data too.So what is the best way to do this? or else please tell me how can use `self.commonData.removeAll()` after 1 `UITableView` has loaded.Currently I did in `CellforrowAtIndex`
if indexPath.row == self.commonData.count-1
{
self.commonData.removeAll()
}
return cell
,但這並沒有解決我的問題
你這樣做是錯的。每個表視圖都需要自己的數據。除非這些表格用於顯示完全相同的數據,否則不能重複使用一個數組用於多個表格。 – rmaddy