无法在ios的表视图中显示localsearchresponse数据
我正在使用无法在ios的表视图中显示localsearchresponse数据,ios,swift,tableview,mklocalsearch,Ios,Swift,Tableview,Mklocalsearch,我正在使用MapView开发一个应用程序,现在有一个问题,请帮助我解决 当用户键入一个地方的名称时,我放置了一个搜索栏,然后它根据输入的字符串给出建议 使用mapkit,我能够向默认地图发送查询,接收MKLocalSearchResponse 现在我的问题是来自LocalSearchResponse的数据没有显示在tableView单元格中 请提供解决方案 使用工具:Xcode 7.3、swift 2.2 这是我的代码,请看一下 import UIKit import MapKit clas
MapView
开发一个应用程序,现在有一个问题,请帮助我解决
- 当用户键入一个地方的名称时,我放置了一个搜索栏,然后它根据输入的字符串给出建议
- 使用mapkit,我能够向默认地图发送查询,接收MKLocalSearchResponse
import UIKit
import MapKit
class ViewController: UIViewController, UISearchBarDelegate,UITableViewDelegate {
var searchController:UISearchController!
var annotation:MKAnnotation!
var localSearchRequest:MKLocalSearchRequest!
var localSearch:MKLocalSearch!
var localSearchResponse:MKLocalSearchResponse!
var items1:String = ""
var error:NSError!
var pointAnnotation:MKPointAnnotation!
var pinAnnotationView:MKPinAnnotationView!
var matchingItems: [MKMapItem] = [MKMapItem]()
var mapItems: [MKMapItem] = [MKMapItem]()
var itm : [String] = []
@IBAction func showSearchBar(sender: AnyObject) {
searchController = UISearchController(searchResultsController: nil)
searchController.hidesNavigationBarDuringPresentation = false
self.searchController.searchBar.delegate = self
presentViewController(searchController, animated: true, completion: nil)
}
@IBOutlet var mapView: MKMapView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func searchBarSearchButtonClicked(searchBar: UISearchBar){
searchBar.resignFirstResponder()
dismissViewControllerAnimated(true, completion: nil)
if self.mapView.annotations.count != 0{
annotation = self.mapView.annotations[0]
self.mapView.removeAnnotation(annotation)
}
localSearchRequest = MKLocalSearchRequest()
localSearchRequest.naturalLanguageQuery = searchBar.text
localSearch = MKLocalSearch(request: localSearchRequest)
localSearch.startWithCompletionHandler { (localSearchResponse, error) -> Void in
if localSearchResponse == nil{
let alertController = UIAlertController(title: nil, message: "Place Not Found", preferredStyle: UIAlertControllerStyle.Alert)
alertController.addAction(UIAlertAction(title: "Dismiss", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alertController, animated: true, completion: nil)
return
}
for item in localSearchResponse!.mapItems {
print("Name = \(item.name)")
self.items1 = item.name!
self.matchingItems.append(item as MKMapItem)
print("Matching items = \(self.matchingItems.count)")
}
self.pointAnnotation = MKPointAnnotation()
self.pointAnnotation.title = searchBar.text
self.pointAnnotation.coordinate = CLLocationCoordinate2D(latitude: localSearchResponse!.boundingRegion.center.latitude, longitude: localSearchResponse!.boundingRegion.center.longitude)
self.pinAnnotationView = MKPinAnnotationView(annotation: self.pointAnnotation, reuseIdentifier: nil)
self.mapView.centerCoordinate = self.pointAnnotation.coordinate
self.mapView.addAnnotation(self.pinAnnotationView.annotation!)
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return matchingItems.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) ->UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! UITableViewCell
let entry = matchingItems[indexPath.row]
cell.textLabel!.text = items1[indexPath.row]
return cell
}
}
表格视图的委托
和数据源
设置为关联的视图控制器
UITableViewDataSource
,UITableViewDelegate
- 每次键入单个单词或相应的单词时都调用reloadData()函数李>
表格视图的委托
和数据源
设置为关联的视图控制器
UITableViewDataSource
,UITableViewDelegate
- 每次键入单个单词或相应的单词时都调用reloadData()函数李>
uitextfield
的shouldChangeCharactersRange
来检测用户键入。为什么不能使用func textField shouldEndediting(textField:uitextfield)->Bool.是否有任何方法可以在用户每次再次搜索时清除表视图单元格内容,以及如何查找用户是否正在键入、是否已完成或是否已取消。我使用的是bar按钮项而不是搜索栏。@GuruTeja您可以通过使用uitextfield
的shouldChangeCharactersRange
来检测用户键入。为什么我们不能使用func textField shouldediting(textField:uitextfield)->Bool。