在XCode 7.3.x病变改变了背景颜色为我的StatusBar与：
func setStatusBarBackgroundColor(color: UIColor) {
guard let statusBar = UIApplication.sharedApplication().valueForKey("statusBarWindow")?.valueForKey("statusBar") as? UIView else {
return
}
statusBar.backgroundColor = color
}
但是,似乎这与Swift 3.0不兼容.
不好意思：
func setStatusBarBackgroundColor(color: UIColor) {
guard let statusBar = (UIApplication.shared.value(forKey: "statusBarWindow") as AnyObject).value(forKey: "statusBar") as? UIView else {
return
}
statusBar.backgroundColor = color
}
但它给了我：
this class is not key value coding-compliant for the key statusBar.
任何想法如何改变它与XCode8 / Swift 3.0？
解决方法
extension UIApplication {
var statusBarView: UIView? {
return value(forKey: "statusBar") as? UIView
}
}
UIApplication.shared.statusBarView?.backgroundColor = .red