加入到TextField通过延伸通过我扩展添加动作的按钮,其在迅速
代码是必须在文本框的右侧增加了一个按钮---
import UIKit
@IBDesignable class TxtFieldCustom: UITextField {
@IBInspectable var rightButtonImage: UIImage?
{
didSet
{
updateRightView()
}
}
func updateRightView()
{
//for right Image
if let image = rightButtonImage
{
let button = UIButton(type: .custom)
button.setImage(image, for: .normal)
button.imageEdgeInsets = UIEdgeInsetsMake(0, -16, 0, 0)
button.frame = CGRect(x: 0, y: 0, width: 29, height: 29)
rightView = button
rightViewMode = .always
} else
{
rightViewMode = UITextFieldViewMode.never
rightView = nil
}
}
按钮被显示像截图一样,但我很困惑如何将操作设置为该按钮。我不能将其设置在扩展文件,因为我有不同的来回文本框不同的动作......
可能是此链接对你有帮助尝试[https://stackoverflow.com/questions/40467847/how-to-set-a-function-as-function-argument-in-swift-3](https: //stackoverflow.com/questions/40467847/how-to-set-a-function-as-function-argument-in-swift-3) – Zee