Load WebView with Variable

Question

I am trying to accomplish a very simple task of loading a WebView that has a variable. I am hoping to pass the variable from objective-c to a remote PHP file. The code I am using does not seem to work. The variable is valid, but I cannot get it to pass to the PHP file to be read by the WebView. Any help would be great!

    NSString *userId = [[NSUserDefaults standardUserDefaults]
                        stringForKey:@"userId"];

[webViewFirst loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.website.com/page.php?userId=%@",userId]]];

Thank you very much!

djromero · Accepted Answer · 2012-09-10T10:31:26.977

0

Try +[NSString stringWithFormat] to build the URL string:

NSString *userId = <#whatever#>;
NSString *link = [NSString stringWithFormat:@"http://www.website.com/page.php?userId=%@", userId]
[webViewFirst loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:link]];

edited Sep 10 '12 at 10:31

answered Sep 10 '12 at 09:02

djromero

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Wow. tremendous help!!!! I will mark your answer as accepted (says I need to wait 2 minutes) – Brandon Sep 10 '12 at 09:10

score 0 · Answer 2 · answered Sep 10 '12 at 09:13

NSURL URLWithString does not support string formatting, so you cannot use it like you are trying to do.

What happens, instead, is that the C , operator is used, which just sequences the two expressions: @"http://www.website.com/page.php?userId=%@" and userId, and evaluates to the last one.

Use stringWithFormat to get it right:

[webViewFirst loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://www.website.com/page.php?userId=%@",userId]]]];

Load WebView with Variable

2 Answers2