View Controller 各事件发生顺序介绍

6 月262015

作者：超级efly 发布：2015-06-26 15:56 分类：电脑阅读：14,736

相信大家在初初开始进行iOS编程时，都曾被各种 viewDidLoad 、 viewWillAppear 、 viewDidAppear 等各种各样的事件Func弄得头晕眼花，所以今天「畅想资源」就来举几个例子来让大家可以对这些ViewController上不同的事件更为了解！（附Swift程式码）

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viewDidLoad

View 被载入时：

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    println("viewDidLoad")
}

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view, typically from a nib.

println("viewDidLoad")

}

viewWillAppear

View 要被呈现前，发生于 viewDidLoad 之后：

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)

    println("viewWillAppear")
}

override func viewWillAppear(animated: Bool) {

super.viewWillAppear(animated)

println("viewWillAppear")

}

viewDidAppear

View 呈现后，发生于 viewWillAppear 之后：

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

    println("viewDidAppear")
}

override func viewDidAppear(animated: Bool) {

super.viewDidAppear(animated)

println("viewDidAppear")

}

viewWillDisappear

View 要结束前，要切换到下一个 View 时会发生此事件：

override func viewWillDisappear(animated: Bool) {
    super.viewWillDisappear(animated)

    println("viewWillDisappear")
}

override func viewWillDisappear(animated: Bool) {

super.viewWillDisappear(animated)

println("viewWillDisappear")

}

viewDidDisappear

View 完全结束后，发生于 viewWillDisappear 之后：

override func viewDidDisappear(animated: Bool) {
    super.viewDidDisappear(animated)
        
    println("viewDidDisappear")
}

override func viewDidDisappear(animated: Bool) {

super.viewDidDisappear(animated)

println("viewDidDisappear")

}