trouble using NSMUtableArray in UITableView

Question

I have a NSMutableArray * nameCatalog which contains pair of names and urls(name, url).

If I display nameCatalog in viewDidLoad like this:

for (Catalogue *o in nameCatalog){
        NSLog(@"Catalog: %@", o.url);
    }

I get the following links, which is good:

Next I wanna put the NSMutableArray * nameCatalog as content to a table.And I implement the following:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    NSURL *url=[NSURL URLWithString:[[nameCatalog objectAtIndex:indexPath.row] valueForKey:@"url"]];
     NSLog(@"the clicked url:%@", url);

}

So when I click the first row of the table it will be displayed the first url....the second and so on.

When I click first row it gets displayed this

which is correct.

When I click second row it displays this:

which is also correct.

When I click the third row it displays this:

 (null)

which is WRONG!

Where I'm going wrong?

Has anything to do with the fact that the third link contains the french e?

in the word coupé.

IMPORTANT:

Above for simplisity and for make it clear for everyone I assumed that my NSMutableArray contains only 3 urls.

In fact it contains much more, about 20 urls.And everything is going great except the urls that contain french e.When I click those rows of the table NSLog displays null.

And I'm sure that my NSMutableArray contains those links.Please tell me how to fix this?

Vladimir · Accepted Answer · 2011-09-16 12:21:03Z

5

Your 3rd string contains 'é' character that may be invalid in url - try to add percent escapes for that character using -stringByAddingPercentEscapesUsingEncoding: function in NSString:

NSString *escapedString = [[[nameCatalog objectAtIndex:indexPath.row] valueForKey:@"url"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url=[NSURL URLWithString:escapedString];

answered Sep 16, 2011 at 12:21

Vladimir

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4 Comments

Danra Over a year ago

It sounds like a good solution, but too late - The NSURL is probably already created from a string containing the french. OP should try escaping before creating the NSURL from the string.

Vladimir Over a year ago

@Danra, he has strings for url, NSURL are created in didSelectRowAtIndexPath: method, so it's not late it seems

adrian Over a year ago

@Vladimir Is better but not perfect.It displays the url but instead of coupé I get coup%C3%A9 .So what next?:D

Vladimir Over a year ago

@george, to display anything to user use strings you already have with proper symbols. When trying to load something using nsurl - use escaped string, that string is not meant to be displayed to user. coup%C3%A9 is the same as coupé, it just uses proper encoding to make it valid url string

adrian · Accepted Answer · 2014-09-18 11:44:46Z

0

use this it work fine   
 NSArray *array=[[NSArray alloc] initWithObjects:@"link",@"link",@"link",nil];
        for(int i=0;i<[array count];i++){
            NSString *result = (NSString *) CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)[array objectAtIndex:i], NULL, CFSTR("?=&+"), kCFStringEncodingUTF8);
            NSURL *url=[NSURL URLWithString:result];
            NSLog(@"the clicked url:%@", url);
            NSLog(@"%@",[array objectAtIndex:i]);
        }

edited Sep 18, 2014 at 11:44

adrian

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answered Sep 16, 2011 at 12:41

Rahul Juyal

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