超链接按钮无响应：iOS

Question

Basically I've thoroughly looked everywhere I could for a solution and it seems I do everything right when assigning the URL link to a button. The problem is it does not respond at all. Just does nothing.

The code:

- (IBAction)firstViewBackButton:(id)sender {

    [self dismissViewControllerAnimated:YES completion:nil];
}

- (IBAction)red:(id)sender {

    [[UIApplication sharedApplication] openURL: [NSURL URLWithString:@"www.google.com"]];
}

The button red is in .h and .m files. red is linked with code.

I read a fix where it seemed that I should go to File>Restore...smthing and it somehow enables Safari in the simulator. But I do not have such option in the simulator File section.

I would appreciate the help!

Answer 1

use

-canOpenURL:

it is a function which gives BOOL result.

the answer is

- (IBAction)red:(id)sender {
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"http://www.google.com"]]){
          [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.google.com"]];
    }
}

if the application can open that url it opens

Answer 2

Try This Replace

[NSURL URLWithString:@"www.google.com"]];

with

[NSURL URLWithString:[@"http://www.google.com"  stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];