OTPInput 验证码输入框 ​

OTPInput(
  autoFocus: true,
  value: model.value,
  onChange: (v) => model.value = v,
),

const OTPInput(length: 4, value: "123"),

const OTPInput(gutter: 10, value: "12345"),

const OTPInput(obsecure: true, value: "123"),

OTPInput(
  obsecure: true,
  value: "123",
  onComplete: (chars) =>
      ToastStatic.show(context, message: "Codes: $chars"),
),