iOS Activity VC

activity.m

- (IBAction)sharePressed:(id)sender {
  if (NSClassFromString(@"UIActivityViewController")) {
    NSURL *urlStringToShare = _webView.request.URL;
    NSArray *dataToShare = @[urlStringToShare];
    UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:dataToShare 
                                                                             applicationActivities:nil];
    [self presentViewController:activityVC animated:YES completion:nil];
  }
}