deus_app/lib/common/style/TitleBar.dart

import 'package:flutter/material.dart';

/**
 * Created with IntelliJ IDEA.
 * Package: utils
 * Author: sirai
 * Create Time: 2019-06-24 16:10
 * QQ: 785716471
 * Email: 785716471@qq.com
 * Description:公共的titlebar
 */

class TitleBar {
  /**
   * 仅含 左侧返回按钮 及中间标题
   * appBar: TitleBar().backAppbar(context, '个人资料'),
   * appBar: TitleBar().backAppbar(context, '个人资料',(){}),
   */
  backAppbar(BuildContext context, String title) {
    return AppBar(
      title: Text(
        title,
        style: TextStyle(color: Colors.white, fontSize: 16),
      ),
      centerTitle: true,
      leading: BackButton(),
      brightness: Brightness.light,
      backgroundColor: Color(0xFF4875EC),
      elevation: 0,
      iconTheme: IconThemeData(color: Colors.white),
    );
  }

  /**
   * 设置左侧按钮
   */
  _leading(BuildContext context, VoidCallback onPressed) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      crossAxisAlignment: CrossAxisAlignment.start,
      children: <Widget>[
        Container(
          width: 44,
          padding: EdgeInsets.all(0),
          child: new IconButton(
            padding: EdgeInsets.only(left: 16, right: 16),
//            icon: Image.asset(
//              'assets/images/ic_black_left_arrow.png',
//              fit: BoxFit.contain,
//              width: 16,
//              height: 16,
//            ),
            icon: Icon(Icons.chevron_left),
            onPressed: () {
              if (onPressed == null) {
                _popThis(context);
              } else {
                onPressed();
              }
            },
          ),
        ),
      ],
    );
  }

  drawAppBar(String title, VoidCallback rightButtonClick) {
    return AppBar(
      centerTitle: true,
      titleSpacing: 0,
      elevation: 0,
      backgroundColor: Color(0xFF4875EC),
      leading: BackButton(),
      // 返回按钮
      title: Text(
        title,
        style: TextStyle(fontSize: 16),
      ),
      automaticallyImplyLeading: false,
      // 标题
      actions: <Widget>[

        new IconButton(
          // action button
          padding: EdgeInsets.only(right: 20),
          icon: new Icon(Icons.drive_file_rename_outline),
          onPressed: rightButtonClick,
        ),
      ],
    );
  }

  /**
   * 关闭页面
   */
  _popThis(BuildContext context) {
    Navigator.of(context).pop();
  }
}