输入附件视图在图像选择器取消后消失 [Swift]

Question

我有一个非常标准的 inputAccessoryView，带有图像和相册按钮。但我发现如果在显示键盘时启动相册（换句话说，textView 是第一响应者），当相册被关闭时 inputAccessoryView 消失。如何让它一直停留在屏幕底部？

我的实现是通用的：

let inputContainerView: UIView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 40)

override var inputAccessoryView: UIView? {
    return inputContainerView
}

lazy var imagePicker: UIImagePickerController = {
    let picker = UIImagePickerController()
    picker.delegate = self
    return picker
}()

// The function that is hooked up to the album button
func handleAlbum() {
    if UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
        imagePicker.sourceType = .photoLibrary
        imagePicker.allowsEditing = false
        present(imagePicker, animated: true, completion: nil)
    }
}

这是演示问题的 gif。注意 inputAccessoryView 最后消失了。非常感谢！

Answer 1

尝试在关闭图像选择器后添加 self.inputAccessoryView.becomeFirstResponder()。

Answer 2

我解决了。事实证明，在显示图像选择器之前，我需要请求 textView 到 resignFirstResponder()。另外，添加以下代码。它处理用户取消拾取操作的情况。

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    picker.dismiss(animated: true, completion: nil)
}

根据 Apple 文档：

Your delegate’s implementation of this method should dismiss the picker view by calling the dismissModalViewControllerAnimated: method of the parent view controller.

Implementation of this method is optional, but expected.

dismissModalViewControllerAnimated: 方法已弃用，应改用 dismissViewControllerAnimated:completion:。

输入附件视图在图像选择器取消后消失 [Swift]

Input Accessory View disappear after Image Picker is cancelled [Swift]

uiimagepickercontroller

ios

inputaccessoryview

swift