如何从Swift中的View Controller获取当前UIApplication的实例?
我收到了Use of unresolved identifier 'sharedApplication'
个错误代码:
let app = sharedApplication as UIApplication
如何从Swift中的View Controller获取当前UIApplication的实例?
我收到了Use of unresolved identifier 'sharedApplication'
个错误代码:
let app = sharedApplication as UIApplication
编辑Swift 4.x
let app = UIApplication.shared.delegate as! AppDelegate
如果不在ViewController中,则必须:
import UIKit
或许可以try :
let app = UIApplication.sharedApplication()
编辑(Swift 3):
需要注意的是,在Swift 3中,要实现这一点,您需要访问shared
属性:
let app = UIApplication.shared