如何为网络浏览器创建历史记录
我正在为 iPad 制作自己的网络浏览器，在尝试创造历史时遇到了问题。代码如下：
.m
-(void)viewDidLoad{
[self historyMethod];
//more settings...
}
-(void)historyMethod{
NSString *googleString= @"http://www.google.es";
NSString *currentURLString=TextField.text;
[historyArray addObject:googleString];
if ([googleString isEqual: currentURLString]) {
googleString = nil;
[TableView reloadData];
}
[historyArray addObject: currentURLString ];
[TableView reloadData];
}
我遇到的问题是 historyMethod 仅执行一次，而我需要它一直工作！由于我是新手，我不太了解方法，也不知道如何让它发挥作用。我用 while 循环尝试过，但没有成功。请帮助我的人！
I'm making my own web browser for the iPad, and I have a problem while I'm trying to make the history. Here's the code:
.m
-(void)viewDidLoad{
[self historyMethod];
//more settings...
}
-(void)historyMethod{
NSString *googleString= @"http://www.google.es";
NSString *currentURLString=TextField.text;
[historyArray addObject:googleString];
if ([googleString isEqual: currentURLString]) {
googleString = nil;
[TableView reloadData];
}
[historyArray addObject: currentURLString ];
[TableView reloadData];
}
The problem that I have is that the historyMethod is executed just one time, and I need it working all the time! Since I'm a newbie, I don't know too much about methods, and how I can make it work well. I tried it with a while loop but it didn't work. Please help me people!
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您的意思是您希望重复调用该方法？
您可以使用 NSTimer 之类的东西来重复方法调用；
这将每 1 秒调用您的方法，将其放入您的
viewDidLoad方法中，而不是调用您的historyMethod。然而，如果你不理解方法，我建议你寻找一些 Objective-C 教程。
You mean you want the method to be called repeatedly?
you can use something like
NSTimerto repeat a method call;This will call your method every 1 seconds, place this in your
viewDidLoadmethod, instead of calling yourhistoryMethod.However, if you don't understand methods, I'd recommend some looking for some Objective-C tutorials.
如果您使用的是
UIWebView，那么您可能想让您的控制器成为UIWebViewDelegate。通过实现
- (void)webViewDidFinishLoad:(UIWebView *)webView你可以跟踪正在加载的页面数。在此委托方法中，您可以通过
webview.request.URL获取 URL看一下：
UIWebViewDelegate
UIWebViewDelegateProtocol
NSURLRequest
If you're using
UIWebViewthen you might wanna make your controller aUIWebViewDelegate.By implementing
- (void)webViewDidFinishLoad:(UIWebView *)webViewyou could keep trackof pages being loaded. Inside this delegate method you can get URL by
webview.request.URLTake a look at:
UIWebViewDelegate
UIWebViewDelegateProtocol
NSURLRequest