URLWithString return null

Question

My code must update web view and download web site. But it doesn't because URLWithString returns null. How can I solve this problem? stringByAddingPercentEscapesUsingEncoding is already deprecated.

-(void) setWebViewMain:(NSString *) link {
    // link = @"http://www.rbc.ru/society/05/09/2017/59ae2dfe9a794753f05e3e06"; if this string uncomment code is working

    NSURL *url = [NSURL URLWithString: link];

    NSLog(@"%@",url); // here url is (null)

    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [self.webView loadRequest:requestObj];
    [self.webView reload];

}

Welcome to SO. Please improve you [question formatting](https://stackoverflow.com/editing-help) and clarify your question- — lifeisfoo, Sep 07 '17 at 20:21
Clearly the value you pass in as `link` isn't a valid URL. You need to properly escape special characters. — rmaddy, Sep 07 '17 at 20:29
This is probably a duplicate of https://stackoverflow.com/questions/42529509/stringbyaddingpercentescapesusingencoding-deprecated — rmaddy, Sep 07 '17 at 20:30
Could you check: that `link` is really a NSString object? Could you check that it has correct no extra "{", or "("? — Larme, Sep 08 '17 at 08:31
https://github.com/Vitalikspb/rss.git. link 100% NSString there is no "{", "(" — Vitaliy, Sep 08 '17 at 16:15

score 0 · Answer 1 · answered Sep 08 '17 at 04:54

try as

  -(void) setWebViewMain:(NSString *) link {
// link = @"http://www.rbc.ru/society/05/09/2017/59ae2dfe9a794753f05e3e06"; if this string uncomment code is working

NSURL *url = [NSURL URLWithString: [NSString stringWithFormat:@"%@",link]];

NSLog(@"%@",url); // here url is (null)

NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[self.webView loadRequest:requestObj];
// [self.webView reload];

}

score -3 · Answer 2 · edited Sep 07 '17 at 22:21

-3

Just remove the last line from your method and it will work:

-(void) setWebViewMain:(NSString *) link {
    // link = @"http://www.rbc.ru/society/05/09/2017/59ae2dfe9a794753f05e3e06"; if this string uncomment code is working

    NSURL *url = [NSURL URLWithString: link];

    NSLog(@"%@",url); // here url is (null)

    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [self.webView loadRequest:requestObj];
    //[self.webView reload];
}

You can call it like this:

[self setWebViewMain:@"http://www.rbc.ru/society/05/09/2017/59ae2dfe9a794753f05e3e06"];

edited Sep 07 '17 at 22:21

rmaddy

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answered Sep 07 '17 at 20:27

Amjad

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Please read the question (and the comment in the code you posted in your answer). The problem is that `url` is `nil`. – rmaddy Sep 07 '17 at 22:22

URLWithString return null

2 Answers2