Question

我想从@IBInspectabale

创建一个键盘选择

如何实现这个

我正在创建一个视图，其中我插入了一个ImageView和一个TextField，现在我将这个自定义视图类创建为@IBDesignable并创建了@IBInspectable元素。

我成功创建了侧面图像和占位符元素，但现在我正在尝试创建键盘类型但面临问题。

代码剪辑：`import UIKit

@IBDesignable class CustomTextField：UIView，UITextFieldDelegate {

//custom view from the XIB file
var view: UIView!

@IBOutlet weak var textField: UITextField!
@IBOutlet weak var imageView: UIImageView!

override init(frame: CGRect) {
    super.init(frame: frame)
    loadViewFromNib ()
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    loadViewFromNib ()
}

func loadViewFromNib() {
    let bundle = Bundle(for: type(of: self))
    let nib = UINib(nibName: "CustomTextField", bundle: bundle)
    let view = nib.instantiate(withOwner: self, options: nil)[0] as! UIView
    view.frame = bounds
    view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    self.addSubview(view);



}

@IBInspectable var sideImage: UIImage? {
    get {
        return imageView.image
    }
    set(sideImage) {
        imageView.image = sideImage
    }
}

@IBInspectable var placeHolderText: String? {
    get {
        return textField.placeholder
    }
    set(placeHolderText) {
        textField.placeholder = placeHolderText
    }
}'

以上所有工作正常，但以下对我不起作用：

@IBInspectable var keyboard: UIKeyboardType? {
    get{
        return UIKeyboardType(rawValue: textField.keyboardType.rawValue)
    }
    set(keyboard){
        textField.keyboardType = keyboard!
    }
}

}

我通过创建枚举来尝试它，但它没有给我任何结果。

Answer 1

无法为@IBInspectable变量使用枚举类型。您必须将var设置为String或Int。

来自Apple的文档：

您可以将IBInspectable属性附加到类中的任何属性声明，类扩展或任何类型的类别 Interface Builder定义的运行时属性支持：布尔值，整数或浮点数，字符串，本地化字符串，矩形，点，大小，颜色，范围和零。

Answer 2

首先感谢大家。我的问题解决了，没有做任何额外的努力创建枚举和所有。我使用了苹果预定义的UIKeyboardType枚举。只需编写以下代码：

@IBInspectable var keyboard:Int{
    get{
        return self.textField.keyboardType.rawValue
    }
    set(keyboardIndex){
        self.textField.keyboardType = UIKeyboardType.init(rawValue: keyboardIndex)!

    }
}

它将显示“界面中的键盘”构建器，您可以为键盘类型设置0,1,2 ...值。其中0,1,2表示如下：

0: default // Default type for the current input method.

1: asciiCapable // Displays a keyboard which can enter ASCII characters

2: numbersAndPunctuation // Numbers and assorted punctuation.

3: URL // A type optimized for URL entry (shows . / .com prominently).

4: numberPad // A number pad with locale-appropriate digits (0-9, ۰-۹, ०-९, etc.). Suitable for PIN entry.

5: phonePad // A phone pad (1-9, *, 0, #, with letters under the numbers).

6: namePhonePad // A type optimized for entering a person's name or phone number.

7: emailAddress // A type optimized for multiple email address entry (shows space @ . prominently).

8: decimalPad // A number pad with a decimal point.

9: twitter // A type optimized for twitter text entry (easy access to @ #)

想通过@IBInspectable实现键盘选择

2 个答案: