斯威夫特：的UISearchBar：获取文本时，搜索按钮点击

Question

我玩弄斯威夫特学习它，现在我无法从UISearchBar

现在我的代码看起来像这样，把文本：

import UIKit 

class SecondViewController: UIViewController { 

    @IBOutlet var myWebView : UIWebView 
    @IBOutlet var adressbar: UISearchBar 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     adressbar.showsScopeBar = true 

     var url = NSURL(string: "http://google.com") 
     var request = NSURLRequest(URL: url) 

     myWebView.scalesPageToFit = true 
     myWebView.loadRequest(request) 
    } 

    func searchBarSearchButtonClicked(searchBar: UISearchBar!) { 

     var url = NSURL(string: adressbar.text) 
     var request = NSURLRequest(URL: url) 

     myWebView.scalesPageToFit = true 
     myWebView.loadRequest(request) 
    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
    } 
} 

Answer 1

在viewDidLoad必须将搜索栏的委托从它接收searchBarSearchButtonClicked：

import UIKit 

class SecondViewController: UIViewController, UISearchBarDelegate 
{ 
    @IBOutlet var myWebView : UIWebView 
    @IBOutlet var adressbar: UISearchBar 

    override func viewDidLoad() 
    { 
     super.viewDidLoad() 

     adressbar.showsScopeBar = true 
     adressbar.delegate = self 

     var url = NSURL(string: "http://google.com") 
     var request = NSURLRequest(URL: url) 

     myWebView.scalesPageToFit = true 
     myWebView.loadRequest(request) 
    } 

    func searchBarSearchButtonClicked(searchBar: UISearchBar!) 
    { 
     var url = NSURL(string: searchBar.text) 
     var request = NSURLRequest(URL: url) 

     myWebView.scalesPageToFit = true 
     myWebView.loadRequest(request) 
    } 

    override func didReceiveMemoryWarning() 
    { 
     super.didReceiveMemoryWarning() 
    } 
} 

Answer 2

1.首先件事是符合UISearchbarDelegate。

2.设置搜索栏代表自我。

你可以在这里找到更多的信息Swift iOS tutorial : Implementing search using UISearchBar and UISearchBarDelegate