简单实现UIActivityIndicatorView上添加文字

- (void)webViewDidStartLoad:(UIWebView *)webView{     if (myAlert==nil){         myAlert = [[UIAlertView alloc] initWithTitle:nil                                                                message: @"正在加载数据，请稍候..."                                                                 delegate: self                                                    cancelButtonTitle: nil f                                                  otherButtonTitles: nil];      UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];       activityView.frame = CGRectMake(120.f, 48.0f, 37.0f, 37.0f);         [myAlert addSubview:activityView];       [activityView startAnimating];       [myAlert show];  } } - (void)webViewDidFinishLoad:(UIWebView *)webView{         [myAlert dismissWithClickedButtonIndex:0 animated:YES];  }