huixiang_app/lib/view_widget/my_tab.dart

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

const double _kTabHeight = 35.0;

class MyTab extends StatelessWidget {
  MyTab({
    Key key,
    this.text,
  })  : assert(text != null),
        super(key: key);

  final String text;

  Widget _buildLabelText() {
    return Text(text, softWrap: false, overflow: TextOverflow.fade);
  }

  @override
  Widget build(BuildContext context) {
    assert(debugCheckHasMaterial(context));

    final double height = _kTabHeight;
    final Widget label = _buildLabelText();

    return SizedBox(
      height: height,
      child: Center(
        child: label,
        widthFactor: 1.0,
      ),
    );
  }

  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(StringProperty('text', text, defaultValue: null));
  }
}