如果 UIWebview url 等于 [英] If UIWebview url is equal to

问题描述

我有一个名为homeview"的 UIWebView.每次有人浏览 UIWebview 时，我都想检查页面 url 是否为 "http://www.website.com/cart"，然后将标签控制器更改为第二个标签.

I got a UIWebView called "homeview". Everytime someone is browsing the UIWebview I want to check if the page url is "http://www.website.com/cart" and then change the tab controller to the second tab.

所以我是这样做的:

- (BOOL)webView:(UIWebView *)homeview shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSString *URLString = [[request URL] absoluteString];
if ([URLString isEqualToString:@"http://www.website.com/cart"]) {
    self.tabBarController.selectedViewController = [self.tabBarController.viewControllers objectAtIndex:2];
}
return YES;
}

但没有运气......所以我试图在页面等于网址时收到警报:

But with no luck... So I tried to get an alert when page is equal to the url with:

- (BOOL)webView:(UIWebView *)homeview shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSString *URLString = [[request URL] absoluteString];
if ([URLString isEqualToString:@"http://www.website.com/cart"]) {
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle: @"Alert Title here"
                                                   message: @"Alert Message here"
                                                  delegate: self
                                         cancelButtonTitle:@"Cancel"
                                         otherButtonTitles:@"OK",nil];


    [alert show];
    [alert release];
}
return YES;
}

但这也不是诀窍......

But that didn't the trick as well...

上面的代码放在我的 FirstViewController.m 中，这是我的 FirstViewController.h:

The above code is placed in my FirstViewController.m and this is my FirstViewController.h:

#import <UIKit/UIKit.h>

@interface FirstViewController : UIViewController
{
IBOutlet UIActivityIndicatorView *indicator;
IBOutlet UIWebView *homeview;
NSTimer *timer;
}
@property (retain, nonatomic) IBOutlet UIWebView *homepage;

@end

谁能帮帮我?

推荐答案

试试这个:

使用*Compare:*比较两个字符串.

Use *Compare:*to compare two strings.

- (BOOL)webView:(UIWebView *)homeview shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSString *URLString = [[request URL] absoluteString];
if ([URLString Compare:@"http://www.website.com/cart"]==NSOrderedSame) {
    self.tabBarController.selectedViewController = [self.tabBarController.viewControllers objectAtIndex:2];
}
return YES;
}

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