Xcode 检测 iOS 版本并相应地显示故事板
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/19186189/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Xcode detect iOS version and show storyboard accordingly
提问by BrownEye
I want to show one storyboard to my iOS6 users and another to iOS7 users. How can I do this?
我想向我的 iOS6 用户展示一个故事板，向 iOS7 用户展示另一个。我怎样才能做到这一点？
回答by Mike Pollard
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
//load and show ios6 storyboard
}
else {
//load and show ios7 storyboard
}
回答by Greg
You can get the iOS version using this code:
您可以使用以下代码获取 iOS 版本：
[[UIDevice currentDevice] systemVersion]
For example, to detect iOS 6, you could do something like:
例如，要检测 iOS 6，您可以执行以下操作：
if ([[UIDevice currentDevice].systemVersion hasPrefix:@"6"]) {
// ...
}
Then, to load different storyboards for iOS 6 and 7, you would do something like:
然后，要为 iOS 6 和 7 加载不同的故事板，您可以执行以下操作：
if ([[UIDevice currentDevice].systemVersion hasPrefix:@"6"]) {
myStoryboard = [UIStoryboard storyboardWithName:@"Storyboard_6" bundle:nil];
} else {
myStoryboard = [UIStoryboard storyboardWithName:@"Storyboard_7" bundle:nil];
}
EDIT:as noted in the other answers, an arguably better way to detect iOS version is to use the NSFoundationVersionNumber, as no string parsing of the systemVersion is needed.
编辑：如其他答案所述，检测 iOS 版本的更好方法是使用 NSFoundationVersionNumber，因为不需要对 systemVersion 进行字符串解析。
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
myStoryboard = [UIStoryboard storyboardWithName:@"Storyboard_6" bundle:nil];
} else {
myStoryboard = [UIStoryboard storyboardWithName:@"Storyboard_7" bundle:nil];
}
回答by danypata
You can try something like this in AppDelegate (very important)
你可以在 AppDelegate 中尝试这样的事情（非常重要）
UIStoryboard *storyboard = nil;
if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1) {
storyboard = [UIStoryboard storyboardWithName:@"iOS7_AND_ABOVE" bundle:[NSBundle mainBundle]];
} else {
storyboard = [UIStoryboard storyboardWithName:@"iOS_below_7" bundle:[NSBundle mainBundle]];
}
