//MARK:textfield delegate
//键盘的高度
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
// print("开始编辑")
let fixedTop:CGFloat = kscreenHeight - 252
let convertRect:CGRect = loginScrollView.convertRect(textField.frame, toView: textField.superview)
let textFieledTop = convertRect.origin.y + textField.tt_height
var dispersion:CGFloat = 0.0
let offsetY:CGFloat = loginScrollView.contentOffset.y
if textFieledTop > fixedTop {
dispersion = textFieledTop - fixedTop - offsetY
var offset:CGPoint = loginScrollView.contentOffset
offset.y += dispersion
UIView.beginAnimations(nil, context: nil)
UIView.setAnimationDuration(0.3)
loginScrollView.contentOffset = offset
UIView.commitAnimations()
}
return true
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
// print("return")
if textField.isEqual(mailAccountTF) {
mailAccountTF.resignFirstResponder()
passwordTF.becomeFirstResponder()
}else if textField.isEqual(passwordTF){
hideKeyboardAction()//键盘退出
}
return true
}
func textFieldDidBeginEditing(textField: UITextField) {
// print("进入编辑")
if textField.isEqual(mailAccountTF) {
mailAccountTF.becomeFirstResponder()
}else if textField.isEqual(passwordTF){
passwordTF.becomeFirstResponder()
}
}
func textFieldDidEndEditing(textField: UITextField) {
// print("退出编辑")
hideKeyboardAction()//键盘退出
}
func textFieldShouldEndEditing(textField: UITextField) -> Bool {
// print("开始退出编辑")
return true
}
//限制输入空格 键盘上的x键，输入一个删除一个
func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
if string == " " {
return false
}
return true
}
func textFieldShouldClear(textField: UITextField) -> Bool {
return true
}
//MARK:scrollviewdelegate
func scrollViewWillBeginDragging(scrollView: UIScrollView) {
hideKeyboardAction() //通过滑动隐藏键盘
}
func hideKeyboardAction(){
mailAccountTF.resignFirstResponder()
passwordTF.resignFirstResponder()
}