如何从 UIWebView 打开 safari.app 中的外部链接?

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【中文标题】如何从 UIWebView 打开 safari.app 中的外部链接?【英文标题】:How can I open external links in safari.app from UIWebView? 【发布时间】:2014-06-10 10:50:43 【问题描述】:

我想在 safari.app 中请求外部链接。不幸的是,它不起作用。我已经尝试了来自How can I open an external link in Safari not the app's UIWebView? 的所有代码,但它们在我的代码中都不起作用。

你有什么想法吗?我的错误在哪里?谢谢你的帮助!

这是我的代码:

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController


- (void)viewDidLoad

    [self.iPhoneWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.example.com"]]];
    [self.iPadWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.example.com"]]];



- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType 

    //  open External Links (not beginning with http://www.example.com in Safari.app
    if (
        (navigationType == UIWebViewNavigationTypeLinkClicked) &&
        ( ![[[request URL] absoluteString] hasPrefix:@"http://www.example.com"])
        ) 

        [[UIApplication sharedApplication] openURL:request.URL];
        return NO;
    

    //open Internal links in uiwebview
    return YES;



- (void)displayActivityControllerWithDataObject:(id)obj 
    UIActivityViewController* vc = [[UIActivityViewController alloc]
                                    initWithActivityItems:@[obj] applicationActivities:nil];
    [self presentViewController:vc animated:YES completion:nil];


- (void)webViewDidStartLoad:(UIWebView *)webView

    // starting the load, show the activity indicator in the status bar
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;


- (void)webViewDidFinishLoad:(UIWebView *)webView

    // finished loading, hide the activity indicator in the status bar
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;


- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error

    // load error, hide the activity indicator in the status bar
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

    // report the error inside the webview
    NSString* errorString = [NSString stringWithFormat:
                             @"<html><center><font size=+5 color='red'>Ein Fehler ist aufgetreten<br>%@</font></center></html>",
                             error.localizedDescription];
    [self.iPhoneWebView loadHTMLString:errorString baseURL:nil];




@end

【问题讨论】:

【参考方案1】:

将你的 webview 的 delegate 设置为 self,别忘了!

这对我有用:

-(BOOL) webView:(UIWebView *)inWeb shouldStartLoadWithRequest:(NSURLRequest *)inRequest navigationType:(UIWebViewNavigationType)inType 
    if ( inType == UIWebViewNavigationTypeLinkClicked ) 
        [[UIApplication sharedApplication] openURL:[inRequest URL]];
        return NO;
    

    return YES;

【讨论】:

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