相关知识：
SFSafariViewController 是 iOS 9.0 出现的可以不用跳出app直接在app内打开同Safari相似浏览效果的网页，其次玩的溜的同学可以保存数据到系统替代UUID等一些功能操作，简单使用如下
#import<SafariServices/SafariServices.h>
SFSafariViewControllerDelegate
NSURL *url = [NSURL URLWithString:@"https://www.baidu.com"];
SFSafariViewController *safariVC = [[SFSafariViewController alloc] initWithURL:url];
safariVC.delegate =self;
// self.navigationController.navigationBarHidden = YES;
// [self.navigationController pushViewController:safariVC animated:YES];
// 建议
[self presentViewController:safariVC animated:YEScompletion:nil];
// 加载完成
- (void)safariViewController:(SFSafariViewController *)controller didCompleteInitialLoad:(BOOL)didLoadSuccessfully {
}
// 点击左上角的done
- (void)safariViewControllerDidFinish:(SFSafariViewController *)controller {
}
效果：
