ios - 显示键盘时 UITextView ScrollView 不移动

Question

我的应用程序结构当前是一个导航 Controller ，它导致嵌入了 ScrollView 的 View Controller 。文本字段、 TextView 、按钮等位于 ScrollView 的顶部。通过使用我当前的代码， ScrollView 在单击 UITextFields 时移动 View ，但不移动 UITextViews。我尝试采用Apple推荐的方法并针对UITextViews进行了调整。

此外，在函数keyboardWillBeShown中，检查事件文本字段/ TextView 是否被键盘和滚动条隐藏的部分似乎根本没有任何区别。

我哪里出错了？谢谢

class unwellBasic: UIViewController, UITextViewDelegate,
UIScrollViewDelegate, UITextFieldDelegate {

@IBOutlet var scrollView: UIScrollView!
weak var activeTextView : UITextView?
weak var activeTextField : UITextField?
@IBOutlet var main: UITextView!
@IBOutlet var initials: UITextField!
@IBOutlet var maleButton: UIButton!
@IBOutlet var femaleButton: UIButton!
@IBOutlet var age: UITextField!

@IBOutlet var test: UITextField!

func registerForKeyboardNotifications() {
    let notificationCenter = NSNotificationCenter.defaultCenter()
    notificationCenter.addObserver(self,
        selector: "keyboardWillBeShown:",
        name: UIKeyboardWillShowNotification,
        object: nil)
    notificationCenter.addObserver(self,
        selector: "keyboardWillBeHidden:",
        name: UIKeyboardWillHideNotification,
        object: nil)
}

@IBAction func back(sender: AnyObject) {
    self.navigationController?.popViewControllerAnimated(true)
}
@IBAction func next(sender: AnyObject) {
    self.performSegueWithIdentifier("bodySegue", sender: self)
}

func tapped() {
    initials.resignFirstResponder()
    main.resignFirstResponder()
    age.resignFirstResponder()
    test.resignFirstResponder()
    self.activeTextView = nil
}
// Called when the UIKeyboardDidShowNotification is sent.
func keyboardWillBeShown(sender: NSNotification) {
    let info: NSDictionary = sender.userInfo!
    let value: NSValue = info.valueForKey(UIKeyboardFrameEndUserInfoKey) as! NSValue
    let keyboardSize: CGSize = value.CGRectValue().size

    let contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardSize.height, 0.0)
    scrollView.contentInset = contentInsets
    scrollView.scrollIndicatorInsets = contentInsets

    // If active text field is hidden by keyboard, scroll it so it's visible
    if self.activeTextView != nil {
        var aRect: CGRect = self.view.frame
        aRect.size.height -= keyboardSize.height
        let activeTextViewRect: CGRect? = self.activeTextView!.frame
        let activeTextViewOrigin: CGPoint? = activeTextViewRect?.origin
        if (!CGRectContainsPoint(aRect, activeTextViewOrigin!)) {
        scrollView.scrollRectToVisible(activeTextViewRect!, animated:true)
        }

    }
    if self.activeTextField != nil {
        var aRect: CGRect = self.view.frame
        aRect.size.height -= keyboardSize.height
        let activeTextViewRect: CGRect? = self.activeTextField!.frame
        let activeTextViewOrigin: CGPoint? = activeTextViewRect?.origin
        if (!CGRectContainsPoint(aRect, activeTextViewOrigin!)) {
            scrollView.scrollRectToVisible(activeTextViewRect!, animated:true)
        }

    }

}

// Called when the UIKeyboardWillHideNotification is sent
func keyboardWillBeHidden(sender: NSNotification) {

    let contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, 0.0, 0.0)
    scrollView.contentInset = contentInsets
    self.scrollView .setContentOffset(CGPointMake(0, 0), animated: true)
    self .viewDidLayoutSubviews()
    self.activeTextView = nil
}

func textViewDidBeginEditing(textView: UITextView) {

self.activeTextView = textView
scrollView.scrollEnabled = true
}

func textViewDidEndEditing(textView: UITextView) {

self.activeTextView = nil
    scrollView.scrollEnabled = false
    self.scrollView .setContentOffset(CGPointMake(0, 0), animated: true)
    self .viewDidLayoutSubviews()
}
func textFieldDidBeginEditing(textField: UITextField) {
    activeTextField = textField
    scrollView.scrollEnabled = true
}

func textFieldDidEndEditing(textField: UITextField) {
    activeTextField = nil
    scrollView.scrollEnabled = false
}


func textFieldShouldReturn(textField: UITextField) -> Bool // called when 'return' key pressed. return NO to ignore.
{
    textField.resignFirstResponder()
    return true;
}

override func viewDidLoad() {
    super.viewDidLoad()
    var tap = UITapGestureRecognizer (target: self, action: ("tapped"))
    self.view.addGestureRecognizer(tap)
    self.main.delegate = self
    self.initials.delegate = self
    self.age.delegate = self
 self.registerForKeyboardNotifications()
}

Answer 1

用TPKeyboardAvoiding继承你的 ScrollView ，不需要写太多代码