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: 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))
                  ],
                ),
              )
            ],
          ),
        ),
      ),
    );
  }
}