I call this :
NSString *authLink = @"https://plus.google.com/share?url=http://stackoverflow.com";
NSURL *url = [NSURL URLWithString:authLink];
[vkWebView loadRequest:[NSURLRequest requestWithURL:url]];
after I sent the text, UIWebView loaded my google+ wall. How hide webview and back to my app?
You can watch the url that the UIWebView is trying to load by using the
webView:shouldStartLoadWithRequest:navigationType:delegate metod.See http://developer.apple.com/library/ios/#documentation/uikit/reference/UIWebViewDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intf/UIWebViewDelegate for details.
When you get the URL for the google+ wall, just hide / stop the UIWebView