如何在iOS中通过键盘显示UIView

Question

当用户点击inputAccessoryView中的"附加"按钮时,我想在键盘上创建一个简单的视图.像这样的东西:

有一个简单的方法吗？或者我应该创建我的自定义键盘？

Answer 1

您可以将新的子视图添加到应用程序窗口.

func attach(sender : UIButton)
{
    // Calculate and replace the frame according to your keyboard frame
    var customView = UIView(frame: CGRect(x: 0, y: self.view.frame.size.height-300, width: self.view.frame.size.width, height: 300))
    customView.backgroundColor = UIColor.redColor()
    customView.layer.zPosition = CGFloat(MAXFLOAT)
    var windowCount = UIApplication.sharedApplication().windows.count
    UIApplication.sharedApplication().windows[windowCount-1].addSubview(customView);
}

Answer 2

斯威夫特 4 版本：

let customView = UIView(frame: CGRect(x: 0, y: self.view.frame.size.height - 300, width: self.view.frame.size.width, height: 300))
customView.backgroundColor = UIColor.red
customView.layer.zPosition = CGFloat(Float.greatestFiniteMagnitude)
UIApplication.shared.windows.last?.addSubview(customView)

诀窍是将customView作为顶部子视图添加到UIWindow持有键盘的 中 - 它恰好是UIApplication.shared.windows.

Answer 3

迅捷4.0

let customView = UIView(frame: CGRect(x: 0, y: self.view.frame.size.height-300, width: self.view.frame.size.width, height: 300))
customView.backgroundColor = UIColor.red
customView.layer.zPosition = CGFloat(MAXFLOAT)
let windowCount = UIApplication.shared.windows.count
UIApplication.shared.windows[windowCount-1].addSubview(customView)