flutter-sport/lib/widgets/dialog/alert_dialog.dart

import 'dart:async';

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:sport/bean/user_friend.dart';
import 'package:sport/bean/user_info.dart';
import 'package:sport/services/api/inject_api.dart';
import 'package:sport/utils/toast.dart';
import 'package:sport/widgets/button_cancel.dart';
import 'package:sport/widgets/button_primary.dart';
import 'package:sport/widgets/misc.dart';

import '../space.dart';

class CustomAlertDialog extends StatelessWidget {
  final String title;
  final Widget child;
  final String textCancel;
  final String textOk;
  final Function ok;
  final bool addClose;

  CustomAlertDialog({
    this.title,
    this.child,
    this.textCancel = "取消",
    this.textOk = "确定",
    this.ok,
    this.addClose = false,
  });

  @override
  Widget build(BuildContext context) {
    var _width =
        MediaQuery.of(context).size.width * (child != null ? 0.86 : 0.66);
    return Material(
      type: MaterialType.transparency,
      child: Scaffold(
        backgroundColor: Colors.transparent,
        body: Center(
          child: Container(
            width: _width,
            decoration: BoxDecoration(
              borderRadius: BorderRadius.all(Radius.circular(10.0)),
              color: Colors.white,
            ),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                if (addClose)
                  Align(
                      alignment: Alignment.topRight,
                      child: IconButton(
                        icon: Image.asset("lib/assets/img/btn_close_big.png"),
                        onPressed: () => Navigator.pop(context, false),
                      )),
                if (title != null)
                  Stack(
                    children: <Widget>[
                      Padding(
                        padding: EdgeInsets.fromLTRB(
                            0, child != null ? addClose ? 0 : 16.0 : 32.0, 0, 20),
                        child: Text(
                          title,
                          style: Theme.of(context).textTheme.headline3,
                          strutStyle: fixedLine,
                        ),
                      )
                    ],
                  ),
                if (child != null)
                  ConstrainedBox(
                      constraints: BoxConstraints(
                          maxHeight: MediaQuery.of(context).size.height - 100),
                      child: SingleChildScrollView(
                        child: child,
                      )),
                Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Expanded(
                        child: CancelButton(
                            height: 35,
                            callback: () {
                              Navigator.of(context).pop(false);
                            },
                            content: textCancel),
                      ),
                      SizedBox(
                        width: 16,
                      ),
                      Expanded(
                          child: PrimaryButton(
                              height: 35, callback: ok, content: textOk))
                    ],
                  ),
                )
              ],
            ),
          ),
        ),
      ),
    );
  }
}