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uiAlertViewConroller内的uiExtView约束

uialertviewcontroller uitextview swift ios

MinnuKaAnae · 技术社区 · 8 年前

我有一个 uiExtView inside uiAlertViewController 。我需要将前导和尾随约束设置为 uitextview programmatically.

屏幕截图


   
    
     
      
       
      
     
     
      这是我的密码
     
     func弹出控制器()
{
let alert=uiAlertController(标题:“附加说明”,消息:“在此处编写附加说明。”,首选样式:.alert)

让textView=uitextView())
textView.autoResizingMask=[.flexiblewidth,.flexibleheight]

设为color=ui颜色(红色:224/255,绿色:224/255,蓝色:224/255,alpha:1.0)。cgcolor

textView.layer.borderColor=颜色
textView.layer.borderWidth=1.0
textview.layer.cornerradius=5.0

让controller=myActivitiesViewController()。

textView.frame=控制器.view.frame
controller.view.addSubView(文本视图)

alert.setvalue(控制器,forkey:“contentviewcontroller”)。

让height:nslayoutConstraint=nslayoutConstraint(项:alert.view,属性:.height,relatedby:.equal,toitem:nil,属性:.notanattribute,乘数:1,常量:180)
alert.view.addConstraint(高度)

let saveaction=uiAlertAction(标题:“OK”,样式:.default,处理程序:nil)
let cancelaction=uiAlertAction(标题:“cancel”,样式:.cancel,处理程序:nil)

alert.addaction(保存操作)
alert.addaction(取消操作)


自我呈现(警报,动画:真,完成:{

textView.becomeFirstResponder()。
})

}
< /代码> <静态地

截图



这是我的密码

func popUpController()
{
    let alert = UIAlertController(title: "Additional Notes", message: "Write your additional notes here.", preferredStyle: .alert)

    let textView = UITextView()
    textView.autoresizingMask = [.flexibleWidth, .flexibleHeight]

    let color = UIColor(red: 224/255, green: 224/255, blue: 224/255, alpha: 1.0).cgColor

    textView.layer.borderColor = color
    textView.layer.borderWidth = 1.0
    textView.layer.cornerRadius = 5.0

    let controller = MyActivitiesViewController()

    textView.frame = controller.view.frame
    controller.view.addSubview(textView)

    alert.setValue(controller, forKey: "contentViewController")

    let height: NSLayoutConstraint = NSLayoutConstraint(item: alert.view, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 180)
    alert.view.addConstraint(height)

    let saveAction = UIAlertAction(title: "OK", style: .default, handler: nil)
    let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)

    alert.addAction(saveAction)
    alert.addAction(cancelAction)


    self.present(alert, animated: true, completion: {

        textView.becomeFirstResponder()
    })

}

1 回复 | 直到 8 年前

Anuraj 8 年前

请注意,这只是一个工作。

如果要为AlertController提供更高的高度,请添加更多 新行 >至 title >。

如果您希望修改此项,请根据您的要求调整约束

func showalertcontroller()) { let alertController=uiAlertController(标题:“您的标题\n\n\n\n\n\n”,消息:nil,首选样式:uiAlertControllerStyle.alert) 让customView=uitextView()。 customView.translatesAutoResizingMaskinToConstraints=false alertController.view.autoresizeSubviews=true 让someThingAction=uiAlertAction(标题:“some action”,样式:uiAlertActionStyle.default,处理程序:(alert:uiAlertAction!)在里面打印(自定义视图.text) }) Let CancelAction=uiAlertAction(标题:“Cancel”,样式:uiAlertActionStyle.Cancel,处理程序:(警报:uiAlertAction!)打印(“取消”)) AlertController.AddAction(someThingAction) alertController.addAction(取消操作) alertController.view.addSubView(自定义视图) customView.topAnchor.constraint(等于:alertController.view.topAnchor,常量:50)。isActive=true customView.rightAnchor.constraint(等于:alertController.view.rightAnchor,常量:-10)。isActive=true customView.leftAnchor.constraint(等于:alertController.view.leftAnchor,常量:10)。isActive=true customView.bottomAnchor.constraint(等于:alertController.view.bottomAnchor,常量:-60)。isActive=true customView.backgroundcolor=uicolor.red self.present(警报控制器,动画:真){ } } < /代码> 标题. 调整约束条件根据您的要求,如果您想修改这个 func showAlertController() { let alertController = UIAlertController(title: "Your title \n\n\n\n\n\n\n\n", message: nil, preferredStyle: UIAlertControllerStyle.alert) let customView = UITextView() customView.translatesAutoresizingMaskIntoConstraints = false alertController.view.autoresizesSubviews = true let somethingAction = UIAlertAction(title: "Some Action", style: UIAlertActionStyle.default, handler: {(alert: UIAlertAction!) in print(customView.text) }) let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel, handler: {(alert: UIAlertAction!) in print("cancel")}) alertController.addAction(somethingAction) alertController.addAction(cancelAction) alertController.view.addSubview(customView) customView.topAnchor.constraint(equalTo: alertController.view.topAnchor, constant: 50).isActive = true customView.rightAnchor.constraint(equalTo: alertController.view.rightAnchor, constant: -10).isActive = true customView.leftAnchor.constraint(equalTo: alertController.view.leftAnchor, constant: 10).isActive = true customView.bottomAnchor.constraint(equalTo: alertController.view.bottomAnchor, constant: -60).isActive = true customView.backgroundColor = UIColor.red self.present(alertController, animated: true) { } }