一点小区别，

        [[UIApplicationsharedApplication] openURL:[NSURLURLWithString:[NSStringstringWithFormat:@"tel://%@", @"022-2345-6789"]]];

        [[UIApplicationsharedApplication] openURL:[NSURLURLWithString:[NSStringstringWithFormat:@"telprompt://%@", @"022-2345-6789"]]];

 

             [self showToast:@"数据记载失败，请稍候重试！"];

             [self showToast:@"数据加载失败，请稍候重试！"];