获取小键盘高度
@ObservedObject private var keyboard = KeyboardResponder()
keyboard.currentHeight
通过小键盘高度判断是否需要添加灰色背景，点击灰色背景隐藏小键盘1
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| if keyboard.currentHeight != 0 {
Color.gray
.edgesIgnoringSafeArea(.all)
.opacity(0.4)
.onTapGesture {
withAnimation(.spring()){
UIApplication.shared.windows.forEach { (window) in
if window.isKeyWindow {
window.endEditing(true)
}
}
}
}
}
|
效果图
keyboardhandle.swift1
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| import UIKit
import Foundation
import SwiftUI
import Combine
class KeyboardResponder: ObservableObject {
private var _center: NotificationCenter
@Published var currentHeight: CGFloat = 0
init(center: NotificationCenter = .default) {
_center = center
_center.addObserver(self, selector: #selector(keyBoardWillShow(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
_center.addObserver(self, selector: #selector(keyBoardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
}
deinit {
_center.removeObserver(self)
}
@objc func keyBoardWillShow(notification: Notification) {
if let keyboardSize = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
currentHeight = keyboardSize.height
}
}
@objc func keyBoardWillHide(notification: Notification) {
currentHeight = 0
}
}
class KeyboardHeightHelper: ObservableObject {
@Published var keyboardHeight: CGFloat = 0
init() {
self.listenForKeyboardNotifications()
}
private func listenForKeyboardNotifications() {
NotificationCenter.default.addObserver(forName: UIResponder.keyboardDidShowNotification,
object: nil,
queue: .main) { (notification) in
guard let userInfo = notification.userInfo,
let keyboardRect = userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect else { return }
self.keyboardHeight = keyboardRect.height
}
NotificationCenter.default.addObserver(forName: UIResponder.keyboardDidHideNotification,
object: nil,
queue: .main) { (notification) in
self.keyboardHeight = 0
}
}
}
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