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单元格编辑时自定义UITableViewCell反向缩进

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我在Swift中定制了一个UITableViewCell类 . 我在这个类中定义了一个textField并为它添加了约束 .

class DBCell: UITableViewCell {
       var textField:UITextField?
        required init(coder aDecoder: NSCoder) {
            super.init(coder: aDecoder)
            textLabel.setTranslatesAutoresizingMaskIntoConstraints(false)
            fatalError("init(coder:) has not been implemented")
        }
        required override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
            super.init(style: style, reuseIdentifier: reuseIdentifier)
            textLabel.setTranslatesAutoresizingMaskIntoConstraints(false)
        }
    }
    class DBEditCell: DBCell{
      required init(coder aDecoder: NSCoder) {
      uper.init(coder: aDecoder)
     fatalError("init(coder:) has not been implemented")
    }
    required init(style: UITableViewCellStyle, reuseIdentifier: String?) {
      super.init(style: style, reuseIdentifier: reuseIdentifier)
      if textField == nil
     {
     textField=UITextField(frame: CGRectZero)
     }

    textField?.textAlignment=NSTextAlignment.Left
    textField?.clearButtonMode=UITextFieldViewMode.WhileEditing
    textField?.enabled=true

    self.shouldIndentWhileEditing=false
    textField?.delegate=self
    contentView.addSubview(textField!)

    textLabel.setTranslatesAutoresizingMaskIntoConstraints(false)
    //Add constraints to textField
    let hBinds=NSDictionary(objectsAndKeys:textLabel,"textLabel",textField!,"textField")
    textField?.setTranslatesAutoresizingMaskIntoConstraints(false)

    contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-[textLabel]-[textField]-|", options: nil, metrics: nil, views: hBinds))
    let vBinds=NSDictionary(objectsAndKeys:textField!,"textField")
    contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-[textField]-|", options: nil, metrics: nil, views: vBinds))

}
}

当我从tableView(tableView:UITableView,cellForRowAtIndexPath indexPath:NSIndexPath)创建自定义单元格并在UITableView中设置编辑时,它看起来很好 .
Good
但是当我选择一个自定义单元格时,该单元格缩进并且看起来很难看 .
Bad
为什么自定义单元格左移和上移?我该如何解决这个问题?任何建议都应该感激 .

今天我为DBCell添加了约束:

let vBinds=NSDictionary(objectsAndKeys:textLabel,"textLabel")
contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-[textLabel]-|", options: nil, metrics: nil, views: vBinds))

我发现编辑时单元格包含中心,但单元格仍然向左移动 . 我试图向textLabel添加水平约束,如下所示:

contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-[textLabel]-|", options: nil, metrics: nil, views: hBinds))

它没有用 .

1 回答

  • 0

    问题解决了!我已将代码修改为:

    class DBCell: UITableViewCell {
       var textField:UITextField?
        required init(coder aDecoder: NSCoder) {
            super.init(coder: aDecoder)
            fatalError("init(coder:) has not been implemented")
        }
        required override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
            super.init(style: style, reuseIdentifier: reuseIdentifier)
        }
    }
    class DBEditCell: DBCell{
      required init(coder aDecoder: NSCoder) {
      uper.init(coder: aDecoder)
     fatalError("init(coder:) has not been implemented")
    }
    required init(style: UITableViewCellStyle, reuseIdentifier: String?) {
      super.init(style: style, reuseIdentifier: reuseIdentifier)
      if textField == nil
     {
     textField=UITextField(frame: CGRectZero)
     }
    
    textField?.textAlignment=NSTextAlignment.Left
    textField?.clearButtonMode=UITextFieldViewMode.WhileEditing
    textField?.enabled=true
    self.shouldIndentWhileEditing=false
    textField?.delegate=self
    contentView.addSubview(textField!)
    textField?.setTranslatesAutoresizingMaskIntoConstraints(false)
    let hBinds=NSDictionary(objectsAndKeys:textField!,"textField")
    contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:[textField]-|", options: nil, metrics: nil, views: hBinds))
    let vBinds=NSDictionary(objectsAndKeys:textField!,"textField")
    contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-[textField]-|", options: nil, metrics: nil, views: vBinds))
    

    现在我没有为textLabel设置任何约束,只为textField设置约束,我得到了正确的对齐textField .
    enter image description here

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