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?

Answer 1

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];

Answer 2

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]);
        }