ios - 使用 IQKeyboardManagers 时 UITextView 的高度会增加

Question

我最近开始在我正在开发的应用程序中使用 IQKeyboardManager，除了一个小问题外，它运行得非常好。当键盘出现时，我的文本视图的高度会增加（这会使文本视图上升），我知道这一点，因为每次单击文本视图时我都会打印文本视图的高度。这是我的文本视图的代码：

// Setup text view
func setupTextView() {

    // Placeholder text and color
    startStoryTextView.textColor = .gray
    startStoryTextView.text = "Type here"
    startStoryTextView.backgroundColor = .red
    // Add some padding to the text insde the text view
    startStoryTextView.textContainerInset = UIEdgeInsets(top: 15, left: 10, bottom: 15, right: 10)
    startStoryTextView.font = UIFont(name: "PatrickHand-Regular", size: 23)
    startStoryTextView.layer.cornerRadius = 25

    popUp.addSubview(startStoryTextView)
    addTextViewConstraints()
}
// Add the constraints to the text view
func addTextViewConstraints() {

    startStoryTextView.translatesAutoresizingMaskIntoConstraints = false
    startStoryTextView.leadingAnchor.constraint(equalTo: popUp.leadingAnchor, constant: 3).isActive = true
    startStoryTextView.trailingAnchor.constraint(equalTo: popUp.trailingAnchor, constant: -3).isActive = true
    startStoryTextView.topAnchor.constraint(equalTo: popUp.topAnchor, constant: 3).isActive = true
    //startStoryTextView.heightAnchor.constraint(equalToConstant: 589).isActive = true
    startStoryTextView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -70).isActive = true
}

// Add constraints to the pop up view
func addPopUpConstraints() {

    popUp.translatesAutoresizingMaskIntoConstraints = false
    popUp.widthAnchor.constraint(equalToConstant: view.frame.width).isActive = true
    popUp.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 10).isActive = true
    popUp.topAnchor.constraint(equalTo: view.topAnchor, constant: 200).isActive = true
    popUp.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
    view.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true

}

指定文本视图的高度可以解决这个问题，但是当应用程序在不同分辨率的其他设备上使用时会产生另一个问题。

// To print the height of the text view every time the user clicks on the text view
func textViewDidBeginEditing(_ textView: UITextView) {
    print(startStoryTextView.frame.height)
}

标签： iosswiftuitextviewiqkeyboardmanager

Answer 1

不用担心，这是IQKeyboardManager的功能，而不是错误。

您使用IQKeyboardManager，因为您希望 textView 上升，当textViewDidBeginEditing.

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源代码非常清晰。

当您IQKeyboardManager在 IQKeyboardManager.swift 中激活时，您调用override init() {, override init() { do registerAllNotifications，registerAllNotifications注册 UITextField 通知。

NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShowDng(_:)), name: UIKeyboardWillShow, object: nil)

// ...

键盘已经显示。调整位置。

在方法func optimizedAdjustPosition()()中，高度变化

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你的代码很奇怪。

为什么startStoryTextView.bottomAnchor与view.safeAreaLayoutGuide.bottomAnchor.

startStoryTextView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, 常量: -70).isActive = true

由于startStoryTextView.superView是popUp

popUp.addSubview(startStoryTextView)

我认为这是代码错误。IQKeyboardManager无关。