未授权的委托和shouldStartLoadWithRequest [英] Undeclared delegate and shouldStartLoadWithRequest

问题描述

我一般编码比较新！我正在尝试创建一个不允许浏览者浏览的网络视图。我有大部分的编码打字，但我有两个未申报的错误，我不知道如何解决这个问题。

我想要做的是创建一个webView，但我想让它在webView的浏览器不能导航到其他页面。如果他/她也试图尝试，它不能满足请求。因此，它基本上保留在一个页面上。

如果我只需要以一种非常简单的方式声明它们，请告诉我和帮助。谢谢。

错误如下所示：

  #importViewController。 h
 
 @interface ViewController（）
< UIWebViewDelegate> 
 
 @end 
 
 @implementation ViewController 
 @synthesize webView; 
 
  - （void）viewDidLoad 
 {
 [super viewDidLoad]; 
 webview：delegate = nil; 
 NSURL * url = [NSURL URLWithString：@https://twitter.com/u_bett]; 
 NSURLRequest * urlrequest = [NSURLRequest requestWithURL：url]; 
 [webView loadRequest：urlrequest]; 
 
} 
  - （BOOL）webView：（UIWebView *）webView shouldStartLoadWithRequest :( NSURLRequest *）请求navigationType：（UIWebViewNavigationType）navigationType 
 {
 return NO; 
} 
  

解决方案

您的方法包含很多问题：

更改如下：

   - （void）viewDidLoad 
 {
 [super viewDidLoad]; 
 webview.delegate = self; 
 NSURL * url = [NSURL URLWithString：@https://twitter.com/u_bett]; 
 NSURLRequest * urlrequest = [NSURLRequest requestWithURL：url]; 
 [webView loadRequest：urlrequest]; 
 
} 
  

并实现 shouldStartLoadWithRequest： code> like：

   - （BOOL）webView：（UIWebView *）webView shouldStartLoadWithRequest :( NSURLRequest *）请求navigationType ：（UIWebViewNavigationType）navigationType 
 {
 if（navigationType == UIWebViewNavigationTypeLinkClicked）
 {
 return NO; 
} 
 return YES; 
} 
  

查看本教程 UIWebView实现 / / build-building-a-web-browser-with / uiwebview-part-1 /
我想建议你学习 Objective C 。 （在这一点上的一些投资将有助于您节省未来的大量时间）

i am newer to coding in general! I am trying to create a webview that doesnt allow navigation to viewers. I have most of the coding typed up, but i have two undeclared errors and i am not sure how to solve this issue.

What i am trying to do is create a webView, but i would like to make it where the viewer of the webView cant navigate to other pages. If he/she does attempt too it does not fulfill the request.So basically it stays specifically on one page.

If i just need declare them in a really simple way then please show me and help. Thank you.

The Errors are shown below:

#import "ViewController.h"

@interface ViewController()
<UIWebViewDelegate>

@end

@implementation ViewController
@synthesize webView;

- (void)viewDidLoad
{
[super viewDidLoad];
webview:delegate = nil;
NSURL *url = [NSURL URLWithString:@"https://twitter.com/u_bett"];
NSURLRequest *urlrequest = [NSURLRequest requestWithURL:url];
[webView loadRequest:urlrequest];

}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request         navigationType:(UIWebViewNavigationType)navigationType
{
return NO;
}

解决方案

Your method contains lot of issues:

Change that like:

- (void)viewDidLoad
{
    [super viewDidLoad];
    webview.delegate = self;  
    NSURL *url = [NSURL URLWithString:@"https://twitter.com/u_bett"];    
    NSURLRequest *urlrequest = [NSURLRequest requestWithURL:url];
    [webView loadRequest:urlrequest];

}

And implement shouldStartLoadWithRequest: like:

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    if(navigationType == UIWebViewNavigationTypeLinkClicked)
    {
        return NO;
    }
    return YES;
}

Check this tutorial for UIWebView implementation. I would like to suggest you to learn Objective C thoroughly before starting the development. (Some investment at this point will help you to save a lot of time in future)

这篇关于未授权的委托和shouldStartLoadWithRequest的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！