onFocus method

Widget onFocus(
  1. Widget builder(
    1. BuildContext context,
    2. bool hasFocus
    )
)

focus: - 焦点状态 ⚠️ 部分支持：通过 FocusNode 实现

Implementation

Widget onFocus(Widget Function(BuildContext context, bool hasFocus) builder) {
  return Focus(
    child: Builder(
      builder: (context) {
        final focusNode = FocusNode();
        return builder(context, focusNode.hasFocus);
      },
    ),
  );
}