Question

所以我遵循了关于在键盘上方移动文本的苹果指南，当文本字段在scrollview上时这很好用，但是scrollview包含一个集合视图，该集合视图加载一个带有填充在其中的文本字段的笔尖，它们都被指定为委托，当它们被按下时，委托的didEdit / endEdit函数会触发，但是键盘管理代码没有按预期工作......这里是键盘管理代码

http://creativecoefficient.net/swift/keyboard-management/

继承人使用的代码链接..

func keyboardWillBeShown(sender: NSNotification) {
    print("KEYBOARD SHOWN")

    let info: NSDictionary = sender.userInfo!
    let value: NSValue = info.valueForKey(UIKeyboardFrameBeginUserInfoKey) as! NSValue
    let keyboardSize: CGSize = value.CGRectValue().size
    let contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0,keyboardSize.height, 0.0)
    print(keyboardSize.height)
    ScrollView.contentInset = contentInsets
    ScrollView.scrollIndicatorInsets = contentInsets

    // If active text field is hidden by keyboard, scroll it so it's visible
    // Your app might not need or want this behavior.


    var aRect: CGRect = self.view.frame
    aRect.size.height -= keyboardSize.height
    let activeTextFieldOrigin: CGPoint? = activeTextFieldRect?.origin
    if (!CGRectContainsPoint(aRect, activeTextFieldOrigin!)) {
    let dHeight = displayView.frame.height

    ScrollView.scrollRectToVisible(activeTextFieldRect!, animated:true) 
}

此代码的问题在于activeTextfield与视图的文本字段配合良好，我点击文本字段时会打印这些点

activetextfield Frame
(0.0, 20.5, 150.0, 20.5)

但是当我点击集合视图nib文本字段时，我得到了这些点

0.0, 0.0, 259.5, 30.0

我相信这是键盘阻塞文本字段的原因，activetextfieldRect给出了错误的坐标

ScrollView.scrollRectToVisible(activeTextFieldRect!, animated:true)

有人可以给我一些方向来解决这个问题吗？

Answer 1

是的，你是对的。 scrollRectToVisible收到错误的坐标，这就是为什么它不起作用。

要实现您的目标，请考虑使用scrollToItemAtIndexPath(_:atScrollPosition:animated:)。你所需要的只是移动的IndexPath个细胞。我想你可以将这些信息放在tag的{{1}}属性中（例如）。

这样的事情：

textField

Answer 2

func keyboardWillBeShown(sender: NSNotification) {
    print("KEYBOARD SHOWN")
    let info: NSDictionary = sender.userInfo!
    let value: NSValue = info.valueForKey(UIKeyboardFrameBeginUserInfoKey) 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
    // Your app might not need or want this behavior.
    var aRect: CGRect = self.ScrollView.frame
    aRect.size.height -= keyboardSize.height
    let activeTextFieldRect: CGRect? = activeTextField?.frame
    let activeTextFieldOrigin: CGPoint? = TextfieldPoint
    if (!CGRectContainsPoint(aRect, activeTextFieldOrigin!)) {


        ScrollView.scrollRectToVisible(testBox, animated:true)
    }

       }

// Called when the UIKeyboardWillHideNotification is sent
func keyboardWillBeHidden(sender: NSNotification) {
    print("KEYBOARD HIDDEN")
    let contentInsets: UIEdgeInsets = UIEdgeInsetsZero
    ScrollView.contentInset = contentInsets
    ScrollView.scrollIndicatorInsets = contentInsets
}


func textFieldDidBeginEditing(textField: UITextField) {



    let point: CGPoint = textField.convertPoint(CGPointZero, toView: self.ScrollView);

TextfieldPoint = point

    testBox = CGRectMake(point.x, point.y, textField.frame.width, 100 );

    //let indexPath:NSIndexPath? = collview1.indexPathForItemAtPoint(point)

    print("TEXTFIELD EDIT")
    activeTextField = textField

    print(activeTextField)





    ScrollView.scrollEnabled = true
}

func textFieldDidEndEditing(textField: UITextField) {

    print("TEXTFIELD STOP EDIT")
    activeTextField = nil
    ScrollView.scrollEnabled = false
}

它的工作非常麻烦，我想，我得到了文本字段的地方，使CGRect从它，如果键盘重叠文本，视图调整，在iPhone 4s测试到6s加，工作正常

键盘管理阻止UITextView

2 个答案: