从 iPhone 加载 URL 之前执行代码
如果你调用：
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://test.com"]];
它似乎会自动退出你的应用程序——绕过 dealloc、viewDidDisappear 或任何其他函数。
有没有办法在此调用和 Safari（或电话或电子邮件）启动之间放置任何代码，而不必在每次 openURL 调用之前放置计时器？
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编辑：仅当一个特定视图关闭时我才需要调用某些东西 - 无论它是“礼貌地”关闭还是突然关闭......
If you call:
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://test.com"]];
it seems to automatically quit your app -- bypassing the dealloc, viewDidDisappear, or any other functions.
Is there a way to put any code between this call and the Safari (or Phone or Email) launch, without having to put a timer before every openURL call?
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EDIT: I need to call something only if one particular view is closed -- whether it's closed "politely", or abruptly...
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您是否尝试过
在
UIApplicationDelegate的方法中添加一些内容？Have you tried putting something in the
method in your
UIApplicationDelegate?为什么不放一个“启动 Safari”屏幕，做您需要做的事情，然后在您需要做的所有工作完成后调用 openURL 方法？
也就是说，由于用户也可以随时按主页按钮，因此无论如何您都应该保存数据。
Why not put up a "launching Safari" screen, do what you need to, and then call the openURL method when all the work you need to do is done?
That said, since a user can also just press the Home button at any time you should be saving data as you go anyway.