我有2个NSViewController类。两者都是NSButton。在第一个VC中一切正常。按第一个VC上的按钮打开第二个VC。
First View Controller:
import Cocoa
class ViewController: NSViewController {
var number: Int!
override func viewDidLoad() {
super.viewDidLoad()
number = 4
println("Number: \(number)") // WORKS
}
@IBAction func buttonPressed(sender: AnyObject) {
println("Number: \(number)") // WORKS
let testViewController : TestViewController = self.storyboard.instantiateControllerWithIdentifier("TestViewController") as TestViewController
self.presentViewControllerAsModalWindow(testViewController as NSViewController)
}
}
第二视图控制器:
import Cocoa
class TestViewController: NSViewController {
var number: Int!
override func viewDidLoad() {
super.viewDidLoad()
number = 4
println("Number: \(number)") // WORKS
}
@IBAction func buttonPressed(sender: AnyObject) {
println("Number: \(number)") // DOES NOT WORK: EXC_BAD_ACCESS
}
}
为什么第二个VC无法访问变量" number"?
答案 0 :(得分:0)
您是否尝试使用self.number
以防数字变量与第一个视图控制器中的数字变量混淆?