website not upload using webview

ihave write the following code but it does nothing in consloe it shows Unknown scheme, doing nothing

[webview setDeleagte self];
[webView loadRequest:[[NSURLRequest alloc] initWithURL:[[NSURL alloc] initWi开发者_如何转开发thString:sourcelinkStr]]];

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NSString *strURL = @"https://facebook.com";
NSURL *url = [NSURL URLWithString:strURL];
webView.delegate = self;
[webView loadRequest:[NSURLRequest requestWithURL:url]];

now , we have to define Methods For LoadRequest
thanks..