我可以阻止iPhone OS 3.x应用程序在2.x OS上运行吗? [英] Can I prevent an iPhone OS 3.x app from running on 2.x OS?

问题描述

我不希望我的应用程序在3.0之前的任何操作系统的iPhone或iPod上运行.我的印象是App Store会为我照顾它，但我认为情况并非如此.

I don't want my app to run on an iPhone or iPod with any OS prior to 3.0. I was under the impression that the App store would take care of it for me, but I don't think that is the case.

提醒用户然后退出的最佳方法是什么?最好是，我希望这种情况在用户购买我的应用程序之前发生，但是如果事实是用户拥有我的应用程序以及旧的iPod或iPhone，则需要防止该应用程序崩溃.

What is the best way to alert the user and then quit? Preferably, I'd like this to happen before the user purchases my app, but if the fact is that a user has my app, and an old iPod or iPhone, I need to keep the app from crashing.

推荐答案

您可以检查

float version = [[[UIDevice currentDevice] systemVersion] floatValue];

，然后显示UIAlertView.但是该应用程序甚至无法启动，因为您在项目设置中设置了操作系统要求.

and then display a UIAlertView. But the App won't even start, because OS requirement you set in your project settings.

但是请记住:用户仍然可以下载.

But remember: The User will be still able to download it.

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