我有一個可擴展的tableViewCell與幾個UITextFields,一個UILabel和一個UITextView。當tableView展開時,標籤消失並出現UITextFields和UITextView。在兩個UITextFields中都出現光標,但在UITextView中不出現光標。我嘗試更改色調顏色,但沒有任何東西被刮起來,但是當我選擇文本(確實出現)時,文本以淺色顯示,並且可見。我也嘗試改變框架,但沒有奏效。另外我現在將它設置爲一個普通的UITextView,不改變幀以外的任何屬性。 textView是使用UITableViewCell類以編程方式設置的,並且一切看起來都起作用,但是光標。光標不顯示在UITextView iOS
下面是我如何設置的UITextView:
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! StudentTableViewCell
cell.infoView.frame = CGRect(x: 23, y: 207, width: cell.frame.width - 36, height: cell.frame.height - 155)
cell.infoView.delegate = self
cell.infoView.text = classes[indexPath.row].info
cell.infoView.layer.cornerRadius = 5
cell.infoView.layer.masksToBounds = true
cell.placeholderField.frame = CGRect(x: 32, y: 92, width: self.view.frame.width - 38, height: 45)
if cell.infoView.text!.replacingOccurrences(of: " ", with: "") == "" {
cell.placeholderField.placeholder = "Description"
} else {
cell.placeholderField.placeholder = ""
}
cell.placeholderField.backgroundColor = UIColor.clear
cell.nameField.frame = CGRect(x: 23, y: 3, width: cell.frame.width - 70, height: 44)
cell.nameField.text = classes[indexPath.row].name
cell.nameField.delegate = self
cell.nameField.layer.cornerRadius = 5
cell.nameField.layer.masksToBounds = true
cell.nameField.borderStyle = .roundedRect
cell.teacherField.frame = CGRect(x: 23, y: 50, width: cell.frame.width - 36, height: 44)
cell.teacherField.text = classes[indexPath.row].teacher.name
cell.teacherField.delegate = self
cell.teacherField.layer.cornerRadius = 5
cell.teacherField.layer.masksToBounds = true
cell.teacherField.borderStyle = .roundedRect
cell.editButton.frame = CGRect(x: self.view.frame.width - 60, y: 15, width: 70, height: 20)
cell.editButton.addTarget(self, action: #selector(self.editInfoView), for: .touchUpInside)
cell.editButton.setTitle(cell.editButton.title(for: .normal) ?? "Edit", for: .normal)
cell.contentView.addSubview(cell.nameField)
cell.contentView.addSubview(cell.teacherField)
cell.contentView.addSubview(cell.infoView)
cell.contentView.addSubview(cell.editButton)
cell.contentView.addSubview(cell.placeholderField)
cell.textLabel?.text = classes[indexPath.row].name
cell.detailTextLabel?.text = classes[indexPath.row].teacher.name
return cell
}
下面是類定義:
class StudentTableViewCell: UITableViewCell {
var infoView = UITextView()
var placeholderField = UITextField()
var nameField = UITextField()
var teacherField = UITextField()
var editButton = UIButton()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
有誰知道爲什麼光標沒有出現?
在此先感謝您的幫助。
下面是從與光標調試層次中選擇的照片: Photo from the side
在光標前的視圖是placeholderField並且不阻斷光標因爲光標仍然不當它位於placeholderField下方時出現。
對不起我的代碼。我評論了很多,看看這些屬性是否改變了事情,並且我意外地刪除了一些本意的內容。我已經用我現在擁有的一切更新了我的代碼。我還添加了2張照片,說明如何在Debug View Hierarchy中實際看到光標。我還打印出遊標的描述,出於某種原因,它的alpha是0.是否有任何方法可以將alpha從0更改爲1以使其可見。再次感謝您的幫助,我會在編寫其他內容時記住這些建議。 –