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
![复制代码]()
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
})
}
}
![复制代码]()
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
本文转自lpxxn博客园博客，原文链接：http://www.cnblogs.com/li-peng/p/5584236.html，如需转载请自行联系原作者
