[英]SwiftUI TextEditor Scroll with Show Keyboard Not Working
我有一個帶有 SwiftUI 生命周期的 SwiftUI 應用程序,它使用 TextFields 和 TextEditors。 我編寫了一個修飾符來處理在鍵盤存在時滾動鍵盤下方的內容。 我的修飾符對於 TextFields 可以正常工作,但對於 TextEditors 則完全不同。 Apple 文檔說,keyboardWillShowNotification 是在鍵盤顯示之前立即發布的。 我找不到任何聲明通知僅限於 TextFields 的內容。 兩種字段類型都在同一個 ScrollView 中。 希望我在這里遺漏了一些簡單的東西。
我的修改器:
struct AdaptsToSoftwareKeyboard: ViewModifier {
@State var currentHeight: CGFloat = 0
func body(content: Content) -> some View {
content
.padding(.bottom, self.currentHeight)
.edgesIgnoringSafeArea(self.currentHeight == 0 ? Edge.Set() : .bottom)
.onAppear(perform: subscribeToKeyboardEvents)
}
private let keyboardWillOpen = NotificationCenter.default
.publisher(for: UIResponder.keyboardWillShowNotification)
.map { $0.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! CGRect }
.map { $0.height }
private let keyboardWillHide = NotificationCenter.default
.publisher(for: UIResponder.keyboardWillHideNotification)
.map { _ in CGFloat.zero }
private func subscribeToKeyboardEvents() {
_ = Publishers.Merge(keyboardWillOpen, keyboardWillHide)
.subscribe(on: RunLoop.main)
.assign(to: \.self.currentHeight, on: self)
}
}
任何指導將不勝感激。 Xcode 12.2 測試版 (12B5018i) iOS 14
第一次編輯:我認為問題可能是在 TextEditor 獲得焦點時無法收到通知。 但是,將此修飾符添加到 TextEditor 顯示通知已觸發。 沒有進展:
.onReceive(NotificationCenter.default.publisher(for: UIApplication.keyboardWillShowNotification)) { _ in
print("Cursor is in TextEditor!")
}
我假設你應該存儲訂閱者如下
struct AdaptsToSoftwareKeyboard: ViewModifier {
@State var currentHeight: CGFloat = 0
@State private var cancelable: AnyCancellable?
func body(content: Content) -> some View {
content
.padding(.bottom, self.currentHeight)
.edgesIgnoringSafeArea(self.currentHeight == 0 ? Edge.Set() : .bottom)
.onAppear(perform: subscribeToKeyboardEvents)
}
private let keyboardWillOpen = NotificationCenter.default
.publisher(for: UIResponder.keyboardWillShowNotification)
.map { $0.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! CGRect }
.map { $0.height }
private let keyboardWillHide = NotificationCenter.default
.publisher(for: UIResponder.keyboardWillHideNotification)
.map { _ in CGFloat.zero }
private func subscribeToKeyboardEvents() {
self.cancelable = Publishers.Merge(keyboardWillOpen, keyboardWillHide)
.subscribe(on: RunLoop.main)
.assign(to: \.self.currentHeight, on: self)
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.