Hibok/lib/utils/net_state_widget.dart

import 'package:chat/data/constants.dart';
import 'package:chat/generated/i18n.dart';
import 'package:chat/utils/screen.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

import 'NetUtil.dart';

class NetStateWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

    return StreamBuilder(
      stream: NetWork().stream,
      initialData: ChatState.connecting,
      builder: (BuildContext context, AsyncSnapshot snapshot) {
        if (snapshot.data == ChatState.connecting.index) {
          return Container(
              color: Colors.white70,
              padding: EdgeInsets.symmetric(vertical: 5),
              child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    CupertinoActivityIndicator(),
                    SizedBox(width: 10),
                    fixedText(I18n.of(context).connecting, color: Colors.grey[300])
                  ]));
        } else if (snapshot.data == ChatState.logining.index) {
          return Container(
              color: Colors.white70,
              padding: EdgeInsets.symmetric(vertical: 5),
              child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    CupertinoActivityIndicator(),
                    SizedBox(width: 10),
                    fixedText(I18n.of(context).logining, color: Colors.grey[300])
                  ]));
        } else if (snapshot.data == ChatState.connectFailed.index ||
            snapshot.data == ChatState.loginFailed.index) {
          return InkWell(
              onTap: () {
                if (snapshot.data == ChatState.connectFailed.index) {
                  NetWork().reconnect();
                } else {
                  NetWork().reLogin();
                }
              },
              child: Container(
                  color: Colors.white70,
                  padding: EdgeInsets.symmetric(vertical: 5),
                  child: Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: <Widget>[
                        Icon(
                            IconData(0xe649,
                                fontFamily: Constants.IconFontFamily),
                            color: Colors.grey),
                        SizedBox(width: 10),
                        fixedText(I18n.of(context).net_error,
                            color: Colors.grey)
                      ])));
        } else {
          return Container(
            height: 0,
          );
        }
      },
    );
  }
}