SwiftUI_TextField_Part1
案件でSwiftUIをやる予定なので、少し調査をしています。
題名のSwiftUI_TextFieldの実装挙動で情報がない対応を公開します。
– 無い情報１
横並びの挙動がない。
– 無い情報２
アンダーラインの可変
挙動はこちらです。
https://t.co/QlJP7mudkB
— DaisukeNagata (@dbank0208) December 16, 2019
SwiftUIでTextField書いてみました。 pic.twitter.com/Wo4DQJBBAo
横並びを実現する上で、このようにするとFieldのカーソルの位置が正しく保てました。
@State var spacing: CGFloat = 0
HStack(alignment: .bottom, spacing: spacing)
挙動の説明
HStackは横並びを成立させるブロックです。動作する度にTexField内に文字があるか判定して、文字がある場合は 下線を赤色にするプログラムをしています。文字がない場合は黒色です。
HorizontalLineShapeクラスの-rect.size.widthで下線位置を作成しています。
addRoundedRectは反時計回りになっているので、逆の-rect.size.widthでカーソル位置と下線位置を合わせました。
let fill = CGRect(x: -rect.size.width, y: 0, width: rect.size.width, height: rect.size.height)
VStackは縦のデザイン実装とbindを合わせているので、応用も効くかと思います。
以上、貴重なお時間お読み下さいまして、誠にありがとうございます。
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