View Controller 各事件發生順序介紹

6 月262015

作者：超级efly 发布：2015-06-26 15:56 分类：电脑阅读：11,998

相信大家在初初開始進行iOS編程時，都曾被各種 viewDidLoad 、 viewWillAppear 、 viewDidAppear 等各種各樣的事件Func弄得頭暈眼花，所以今天「暢想資源」就來舉幾個例子來讓大家可以對這些ViewController上不同的事件更爲瞭解！（附Swift程式碼）

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viewDidLoad

View 被載入時：

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 要被呈現前，發生於 viewDidLoad 之後：

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

    println("viewWillAppear")
}

override func viewWillAppear(animated: Bool) {

super.viewWillAppear(animated)

println("viewWillAppear")

}

viewDidAppear

View 呈現後，發生於 viewWillAppear 之後：

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

    println("viewDidAppear")
}

override func viewDidAppear(animated: Bool) {

super.viewDidAppear(animated)

println("viewDidAppear")

}

viewWillDisappear

View 要結束前，要切換到下一個 View 時會發生此事件：

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

    println("viewWillDisappear")
}

override func viewWillDisappear(animated: Bool) {

super.viewWillDisappear(animated)

println("viewWillDisappear")

}

viewDidDisappear

View 完全結束後，發生於 viewWillDisappear 之後：

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

override func viewDidDisappear(animated: Bool) {

super.viewDidDisappear(animated)

println("viewDidDisappear")

}