如何在 iOS 上的 Swift 中获取 sharedApplication？
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How to get sharedApplication in Swift on iOS?
提问by Evgenii
How can I get instance of current UIApplication from View Controller in Swift?
如何从 Swift 中的 View Controller 获取当前 UIApplication 的实例？
I am getting Use of unresolved identifier 'sharedApplication'error with this code:
我收到Use of unresolved identifier 'sharedApplication'此代码错误：
let app = sharedApplication as UIApplication
回答by Darren
EDIT Swift 4.x
编辑Swift 4.x
let app = UIApplication.shared.delegate as! AppDelegate
Perhaps try:
也许尝试：
let app = UIApplication.sharedApplication()
EDIT (Swift 3):
编辑（斯威夫特 3）：
It should be noted that in Swift 3, to accomplish this, you will want to access the sharedproperty instead:
应该注意的是，在 Swift 3 中，要完成此操作，您将需要访问该shared属性：
let app = UIApplication.shared
回答by iPatel
You can do it by
你可以通过
let app = UIApplication.sharedApplication()
