我是编码的绝对初学者
我使用xcode8和swift3
我有一个用json数据填充的tableview ...
现在我想用搜索栏过滤结果。
我到目前为止，但搜索栏没有做任何事情......
let session = URLSession.shared
let task = session.dataTask(with: url as URL) {(NSData, response, error) -> Void in
do {
let urlContent = NSData
let records = try JSONSerialization.jsonObject(with: urlContent!, options:[]) as! [[String:Any]]
AppDelegate.notes.removeAll()
for record in records {
print(record["name"] as! String)
let note = StructNote()
if record["uniname"] != nil {
note.uniname = record["uniname"] as! String
}
if record["place"] != nil {
note.place = record["place"] as! String
}
if record["time"] != nil {
note.intime = record["time"] as! String
}
}
let concurrentQueue = DispatchQueue(label: "queuename", attributes: .concurrent)
concurrentQueue.sync {
self.tableViewNote.reloadData()
}
}
catch {
print("Json Error")
}
}
task.resume()
}
override func viewDidLoad() {
super.viewDidLoad()
//----------- Searchbar ----------------------
tableViewNote.delegate = self
tableViewNote.dataSource = self
self.resultSearchController = ({
let controller = UISearchController(searchResultsController: nil)
controller.searchResultsUpdater = self
controller.dimsBackgroundDuringPresentation = false
controller.searchBar.sizeToFit()
controller.searchBar.barStyle = UIBarStyle.black
controller.searchBar.barTintColor = UIColor.white
controller.searchBar.backgroundColor = UIColor.clear
self.tableViewNote.tableHeaderView = controller.searchBar
return controller
})()
self.tableViewNote.reloadData()
//----------- Searchbar ----------------------
} // here is the end of viewdidload
//----------- Searchbar ----------------------
func updateSearchResults(for searchController: UISearchController){
}
var filteredTableData = [String]()
var resultSearchController = UISearchController()
private func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
private func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if self.resultSearchController.isActive {
return self.filteredTableData.count
}else{
return AppDelegate.notes.count
}
}
private func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
_ = indexPath.section
_ = indexPath.row
let cell: UITableViewCell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier:"addCategoryCell")
cell.selectionStyle = UITableViewCellSelectionStyle.none
cell.backgroundColor = UIColor.clear
cell.contentView.backgroundColor = UIColor.clear
cell.textLabel?.textAlignment = NSTextAlignment.right
cell.textLabel?.textColor = UIColor.black
cell.textLabel?.font = UIFont.systemFont(ofSize: 14.0)
if self.resultSearchController.isActive {
cell.textLabel?.text = filteredTableData[indexPath.row]
} else {
cell.textLabel?.text = filteredTableData[indexPath.row]
}
return cell
}
func updateSearchResultsForSearchController(searchController: UISearchController) {
filteredTableData.removeAll(keepingCapacity: false)
let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchController.searchBar.text!)
let array = (AppDelegate.notes as NSArray).filtered(using: searchPredicate)
filteredTableData = array as! [String]
self.tableViewNote.reloadData()
}
//----------- Searchbar ----------------------
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return AppDelegate.notes.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let note = AppDelegate.notes[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell", for: indexPath as IndexPath) as! CustomCell
cell.labelUni.text = note.uniname
cell.labelPlace.text = note.place
cell.labelTime.text = note.intime
cell.labelTime.text = note.outtime
return cell
}
private func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
}
private func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
}