【swift学习笔记】六.访facebook登录页面

代码最下边有下载地址。

做这个demo的主要心得就是自适应所有的屏幕，要先布局大的框架，再一步一步设置小的细节。

看一下效果



再看一下自动适应所有屏幕的效果：



keyboard打开时整个frame上移一个keyboard的高度

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

// btn
loginBtn.layer.cornerRadius = 3

// text
userText.delegate = self
passwordText.delegate = self

NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.keyboardWillShow(_:)), name: UIKeyboardWillShowNotification, object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.keyboardWillHide(_:)), name: UIKeyboardWillHideNotification, object: nil)

}

func keyboardWillShow(notification: NSNotification) {
if isMovied {
return
}
isMovied = true
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {

UIView.animateWithDuration(0.25, animations: {
self.view.frame.origin.y -= keyboardSize.height
}
)
}

}

func keyboardWillHide(notification: NSNotification) {

isMovied = false
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
UIView.animateWithDuration(0.25, animations: {
self.view.frame.origin.y += keyboardSize.height
})
}
}

别的就没有什么技术点了，大家有时间下载代码看一下吧。

源代码：FaceBookLoginView.zip