mainController = (ViewController *)self.presentingViewController;
mainController.pressureUnit = _pressureSettings.selectedSegmentIndex;
这就是我将如何在目标C中完成它。我如何在swift中执行此操作?
答案 0 :(得分:18)
otherClass()。methodFromOtherClass()是swift的语法
如果您必须传递具有外部名称的属性,则可能是:
otherClass()。methodFromOtherClass(propertyName:stringName)//传递字符串的示例
要调用方法执行某些操作,如果它返回方法的结果:
let returnValue = otherClass()。methodFromOtherClass(propertyName:stringName)
访问属性或函数的示例
class CarFactory {
var name = ""
var color = ""
var horsepower = 0
var automaticOption = false
func description() {
println("My \(name) is \(color) and has \(horsepower) horsepowers")
}
}
var myCar = CarFactory()
myFirstCar.name = "Mustang"
myCar.color = "Red"
myCar.horsepower = 200 myCar.automaticOption = true
myFirstCar.description() // $: "My Mustang is Red and has 200 horsepowers and is Automatic"
摘自:Apple Inc.“The Swift Programming Language。”iBooks。
在这里,您只需调用该方法,但不能调用该类的新实例。
class SomeClass {
class func someTypeMethod() {
// type method implementation goes here
}
}
SomeClass.someTypeMethod()