i want to take only simple url without http:// - objective-c

Question

i want to add "http://" inside code so that user find it easy to browse by only typing a simple url
i have tried
- (IBAction)uurl:(id)sender {
NSURL *myurl = [NSURL URLWithString : #"http://"];
}
but its not working

Answer 1

//This is what the user types, depending on the type of input you use
NSString *urlString = #"www.bla.com";
NSString *httpString = #"http://";
urlString = [httpString stringByAppendingString:urlString];
//OR urlString = [NSString stringWithFormat:#"http://%#",urlString];
NSURL *url = [NSURL URLWithString:urlString];

Answer 2

Right this is simple enough to do but we need to check as well if the user inputs the http:// or https:// themselves. So see below with explanation in comments
- (IBAction)uurl:(id)sender
{
// Our to NSStrings that we want to be checking for.
static NSString *httpsStr = #"https://";
static NSString *httpStr = #"http://";
NSString *urlStr = #"www.google.com"; // User input however you take this
// Our check to make sure that the urlStr passed in does already have http or https
if(![urlStr hasPrefix:httpsStr] && ![urlStr hasPrefix:httpStr]) {
// If it doesn't have anything our default HTTP Protocol will be http
urlStr = [NSString stringWithFormat:#"http://%#", urlStr];
}
// If the user has entered the http or https themselves ignore reseting to http
// Set our urlStr as the URL we want to use.
NSURL *url = [NSURL URLWithString:urlStr];
// At this point you would do whatever it is you want to do with the url
}

Answer 3

Use -initWithScheme:host:path:
// your user input string
NSString *userString = #"www.apple.com";
NSURL *yourURL;
if (![userString hasPrefix:#"http://"])
yourURL = [[NSURL alloc] initWithScheme:#"http" host:userString path:#"/"];
else
yourURL = [[NSURL alloc] initWithString:userString];