Question

我已经建立了一个从底部出现并隐藏在一段时间之后的视图并且效果很好，但我想在UIView课程中将其作为模态，我查看了互联网，但我不能了解或理解如何做到这一点。

snake = UIView(frame: CGRect(x: 0 , y: self.view.frame.size.height-66, width: self.view.frame.size.width, height: 66))
snake.backgroundColor = UIColor(red: 50/255, green: 50/255, blue: 50/255, alpha: 1.0)


let label = UILabel(frame: CGRect(x: 12, y: 8, width: snake.frame.size.width-90, height: 50))
label.text = "Connection error please try again later!!"
label.textColor = UIColor.whiteColor()
label.numberOfLines = 0
label.font = UIFont.systemFontOfSize(14)
snake.addSubview(label)

let button = UIButton(frame: CGRect(x: snake.frame.size.width-87, y: 8, width: 86, height: 50))
button.setTitle("OK", forState: UIControlState.Normal)
button.setTitleColor(UIColor(red: 76/255, green: 175/255, blue: 80/255, alpha: 1.0), forState: UIControlState.Normal)
button.addTarget(self, action: "hideSnackBar:", forControlEvents: UIControlEvents.TouchUpInside)
snake.addSubview(button)
self.view.addSubview(snake)

如何从这个类开始我不知道，我用它的框架以编程方式创建视图，我需要设置按钮的属性，例如标签，并从任何类创建视图。

class snake: UIView {


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

    }

    convenience init () {
        self.init(frame:CGRect.zero)
    }

    required init(coder aDecoder: NSCoder) {
        fatalError("This class does not support NSCoding")
    }

}

Answer 1

代码：

 var label:UILabel!
var button:UIButton!

override init (frame : CGRect) {
    super.init(frame : frame)
    self.backgroundColor = UIColor(red: 50/255, green: 50/255, blue: 50/255, alpha: 1.0)


    label = UILabel(frame: CGRect(x: 12, y: 8, width: self.frame.size.width-90, height: 50))
    label.text = "Connection error please try again later!!"
    label.textColor = UIColor.whiteColor()
    label.numberOfLines = 0
    label.font = UIFont.systemFontOfSize(14)
    self.addSubview(label)

    button = UIButton(frame: CGRect(x: self.frame.size.width-87, y: 8, width: 86, height: 50))
    button.setTitle("OK", forState: UIControlState.Normal)
    button.setTitleColor(UIColor(red: 76/255, green: 175/255, blue: 80/255, alpha: 1.0), forState: UIControlState.Normal)
    button.addTarget(self, action: "hideSnackBar:", forControlEvents: UIControlEvents.TouchUpInside)
    self.addSubview(button)
}

并使用它：

let snakeView = snake(frame: CGRectMake(0 ,self.view.frame.size.height-66, self.view.frame.size.width, 66)))

并为snakeview设置数据：

snakeView.label.text = "hello"

但通常我会创建一个更新视图数据的函数：

func updateData(title:String){
    self.label.text = title
}

并在需要时调用它：

snake.updateData("hello")

P / s：如果使用xib，则必须实现awakeFromNib而不是init。并使用xib创建snake（记住xib的设置标识符：＆＃34; snakeView＆＃34;）：

let snakeView = NSBundle.mainBundle().loadNibNamed("snakeView", owner: nil, options: nil)[0] as snakeView

自定义UIView类 - Swift

1 个答案: