我想在兩個控制器之間傳遞數據,更確切地說,有一個按鈕從一個UIViewController繼承到一個具有可變數據定義的UITableViewController,當我嘗試打印datadefine變量時總是空白雖然我在prepareForSegue功能設置它,下面是對於相同的Swift ios在控制器之間傳遞數據
//
// VC1.swift
// TableViewSearchInSwift
//
// Created by melwyn.p on 24/03/16.
// Copyright © 2016 TheAppGururz. All rights reserved.
//
import UIKit
class VC1: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let dataViewController = segue.destinationViewController as! SearchViewController
dataViewController.defineData = "data1"
print("test")
}
}
下面
代碼爲searchViewController代碼,也這是在第一次已經被切換至所述第二主視圖現在查看彈出按鈕點擊彈出
//
// SearchViewController.swift
// TableViewSearchInSwift
//
// Created by TheAppGuruz-iOS-103 on 24/12/15.
// Copyright © 2015 TheAppGururz. All rights reserved.
//
import UIKit
class SearchViewController: UIViewController, UITableViewDelegate, UISearchDisplayDelegate, UISearchBarDelegate
{
var marrCountryList = [String]()
var marrFilteredCountryList = [String]()
var defineData = String()
var file = String()
@IBOutlet var tblCountry: UITableView!
override func viewDidLoad()
{
print(defineData)
super.viewDidLoad()
var text=""
print(defineData)
if defineData == "data1"
{
file = "/data1.txt"
}
else
{
file = "/data2.txt"
}
do{
text = try String(contentsOfFile: file, encoding: NSUTF8StringEncoding)
}
catch
{
print(error);
//contentsOfFile = nil;
}
marrCountryList = text.componentsSeparatedByString("\n")
self.tblCountry.reloadData()
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
if tableView == self.searchDisplayController!.searchResultsTableView {
return self.marrFilteredCountryList.count
} else {
return self.marrCountryList.count
}
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cellCountry = self.tblCountry.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
var countryName : String!
if tableView == self.searchDisplayController!.searchResultsTableView {
countryName = marrFilteredCountryList[indexPath.row]
} else {
countryName = marrCountryList[indexPath.row]
}
cellCountry.textLabel?.text = countryName.componentsSeparatedByString("%%")[0]
return cellCountry
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
print(defineData)
}
func filterTableViewForEnterText(searchText: String) {
let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchText)
let array = (self.marrCountryList as NSArray).filteredArrayUsingPredicate(searchPredicate)
self.marrFilteredCountryList = array as! [String]
self.tblCountry.reloadData()
}
func searchDisplayController(controller: UISearchDisplayController, shouldReloadTableForSearchString searchString: String?) -> Bool {
self.filterTableViewForEnterText(searchString!)
return true
}
func searchDisplayController(controller: UISearchDisplayController,
shouldReloadTableForSearchScope searchOption: Int) -> Bool {
self.filterTableViewForEnterText(self.searchDisplayController!.searchBar.text!)
return true
}
}
下落你在'SearchViewController'打印數據?你能展示更多的代碼嗎? – Wez
我已經將代碼添加到segue視圖中,還要注意,我也試圖在prepareforsegue函數中打印「test」,該函數沒有打印任何東西,但是segue的視圖到下一個視圖 –
看起來你真正的問題是'prepareForSegue' isn不叫。 –