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Ich habe an meiner iOS-App für die Suchfunktion gearbeitet. Zur Zeit habe ich es geschafft, dass es funktioniert, aber so, dass die Suche erst startet, wenn der Benutzer den Text fertig geschrieben hat und auf die Suchschaltfläche klickt. Wie kann ich es schnell reagieren lassen, indem ich den Anfang abfrage, selbst wenn der erste Buchstabe eingegeben wird? Ich verwende derzeit Suchleiste mit UIView-Controller, nicht UITableViewController.lassen Sie die Suchfunktion schnell auf den eingegebenen Text in ui Suchleiste reagieren [swift]
hier ist mein Code:
//
// CoffeeListViewController.swift
// CoffeeApp
//
// Created by izzuddin on 14/03/2016.
// Copyright © 2016 izzuddin. All rights reserved.
//
import UIKit
import CloudKit
import FBSDKCoreKit
import FBSDKLoginKit
class CoffeeListViewController: UIViewController {
////////////////////////////OUTLET
@IBOutlet weak var tableview: UITableView!
var coffees = [Coffee]()
var filteredNames = [Coffee]()
@IBOutlet weak var searchBar: UISearchBar!
////////////////////////////SPINNER
var loadingView = UIView()
var container = UIView()
var activityIndicator = UIActivityIndicatorView()
func showLoading() {
let win:UIWindow = UIApplication.sharedApplication().delegate!.window!!
self.loadingView = UIView(frame: win.frame)
self.loadingView.tag = 1
self.loadingView.backgroundColor = UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: 0)
win.addSubview(self.loadingView)
container = UIView(frame: CGRect(x: 0, y: 0, width: win.frame.width/3, height: win.frame.width/3))
container.backgroundColor = UIColor(red: 0/255, green: 0/255, blue: 0/255, alpha: 0.6)
container.layer.cornerRadius = 10.0
container.layer.borderColor = UIColor.grayColor().CGColor
container.layer.borderWidth = 0.5
container.clipsToBounds = true
container.center = self.loadingView.center
activityIndicator.frame = CGRectMake(0, 0, win.frame.width/5, win.frame.width/5)
activityIndicator.activityIndicatorViewStyle = .WhiteLarge
activityIndicator.center = self.loadingView.center
self.loadingView.addSubview(container)
self.loadingView.addSubview(activityIndicator)
activityIndicator.startAnimating()
}
func hideLoading(){
UIView.animateWithDuration(0.0, delay: 1.0, options: .CurveEaseOut, animations: {
self.container.alpha = 0.0
self.loadingView.alpha = 0.0
self.activityIndicator.stopAnimating()
}, completion: { finished in
self.activityIndicator.removeFromSuperview()
self.container.removeFromSuperview()
self.loadingView.removeFromSuperview()
let win:UIWindow = UIApplication.sharedApplication().delegate!.window!!
let removeView = win.viewWithTag(1)
removeView?.removeFromSuperview()
})
}
////////////////////////////LOAD DATA
func call_data(){
self.showLoading()
let container = CKContainer.defaultContainer()
let publicData = container.publicCloudDatabase
let query = CKQuery(recordType: "Coffee", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray: nil))
publicData.performQuery(query, inZoneWithID: nil) { results, error in
if error == nil { // There is no error
for coffee in results! {
let newCoffee = Coffee()
newCoffee.name = coffee["Name"] as! String
newCoffee.cafe = coffee["Cafe"] as! String
newCoffee.rating = coffee["Rating"] as! Double
newCoffee.place = coffee["Place"] as? CLLocation
self.coffees.append(newCoffee)
dispatch_async(dispatch_get_main_queue(), {() -> Void in
self.tableview.reloadData()
self.hideLoading()
})
}
}
else {
print(error)
}
}
}
//////////////////////////////////////////////////VIEW DID LOAD
override func viewDidLoad() {
super.viewDidLoad()
call_data()
}
//////////////////////////////////////////////////PREPARE SEGUE
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "AddCoffeeVC" {
let destVC: AddCoffeeViewController = segue.destinationViewController as! AddCoffeeViewController
destVC.delegate = self
}
if segue.identifier == "showCoffeeVC" {
let destVC: ShowCoffeeViewController = segue.destinationViewController as! ShowCoffeeViewController
if let selectedIndexPath = self.tableview.indexPathForSelectedRow {
let coffee: Coffee = self.coffees[selectedIndexPath.row]
destVC.coffeeDetail = coffee
}
}
}
}
////////////////////////////PASSING BACK DATA
extension CoffeeListViewController : AddCoffeeDelegate{
func viewController(vc: AddCoffeeViewController, didAddCoffee coffee: Coffee!) {
self.coffees.append(coffee)
//create the cloudkit record here
let container = CKContainer.defaultContainer()
let publicData = container.publicCloudDatabase
let record = CKRecord(recordType: "Coffee")
record.setValue(coffee.name, forKey: "Name")
record.setValue(coffee.cafe, forKey: "Cafe")
record.setValue(coffee.rating, forKey: "Rating")
record.setValue(coffee.place, forKey: "Place")
publicData.saveRecord(record, completionHandler: { record, error in
if error != nil {
print(error)
}
})
self.dismissViewControllerAnimated(true, completion: nil)
self.tableview.reloadData()
}
}
////////////////////////////////////////////////// ADPOPT TABLE VIEW
extension CoffeeListViewController : UITableViewDelegate, UITableViewDataSource{
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
return self.coffees.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCellWithIdentifier("CoffeeCell", forIndexPath: indexPath)
let coffee = coffees[indexPath.row]
cell.textLabel!.text = coffee.name
cell.detailTextLabel!.text = "\(coffee.rating)"
return cell
}
}
////////////////////////////////////////////////// SEARCH BAR
extension CoffeeListViewController : UISearchBarDelegate {
func searchBarShouldEndEditing(searchBar: UISearchBar)-> Bool{
searchBar.showsCancelButton = true
return searchBar.showsCancelButton.boolValue
}
func searchBarShouldBeginEditing(searchBar: UISearchBar) -> Bool{
searchBar.showsCancelButton = true
return searchBar.showsCancelButton.boolValue
}
func searchBarCancelButtonClicked(searchBar: UISearchBar){
searchBar.resignFirstResponder()
searchBar.setShowsCancelButton(false, animated: false)
call_data()
}
func searchBarSearchButtonClicked(searchBar: UISearchBar){
searchBar.resignFirstResponder()
}
func searchBarTextDidEndEditing(searchBar: UISearchBar){
var empty_array: [Coffee] = []
for coffee in coffees{
if searchBar.text?.lowercaseString == coffee.name {
empty_array.append(coffee)
}
}
self.coffees = empty_array
self.tableview.reloadData()
NSLog("\(searchBar.text)")
}
}