mobileCyberGamesApp/lib/widget/Dialog.dart

import 'package:flutter/material.dart';

//  void showSuccess(text) {

//   }

class MyDialog {
  static void showDialog(context, text,
      {String title,
      bool isCancel = false,
      String submitText = '确认',
      OnTapHomeMenu onsubmit,
      OnTapHomeMenu oncancel}) {
    Navigator.of(context).push(
      PageRouteBuilder(
        opaque: false,
        transitionDuration: Duration(milliseconds: 300),
        transitionsBuilder: (BuildContext context, Animation<double> animation,
            Animation<double> secondaryAnimation, Widget child) {
          return FadeTransition(
            opacity: CurvedAnimation(parent: animation, curve: Curves.linear),
            child: child,
          );
        },
        pageBuilder: (BuildContext context, _, __) {
          return LoadingDialog(
              title: title,
              text: text,
              submitText: submitText,
              cancel: isCancel,
              onsubmit: onsubmit,
              oncancel: oncancel);
        },
      ),
    );
  }
}

typedef void OnTapHomeMenu();

// ignore: must_be_immutable
class LoadingDialog extends Dialog {
  String title;
  String text;
  String submitText;
  bool cancel = false;
  OnTapHomeMenu onsubmit = () {};
  OnTapHomeMenu oncancel = () {};

  LoadingDialog(
      {Key key,
      @required this.text,
      this.cancel,
      this.onsubmit,
      this.oncancel,
      this.title,
      this.submitText})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      child: Scaffold(
        backgroundColor: Color(0xCC000000),
        body: Container(
          child: SizedBox.expand(
            child: UnconstrainedBox(
              child: Container(
                width: 270,
                // padding: EdgeInsets.symmetric(horizontal: 20, vertical: 25),
                decoration: BoxDecoration(
                    color: Color(0xFF15151D),
                    border: Border.all(width: 1, color: Color(0xFFC2524D))),
                child: Stack(
                  children: <Widget>[
                    Padding(
                      padding:
                          EdgeInsets.symmetric(horizontal: 20, vertical: 25),
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: <Widget>[
                          Text(title ?? '提示',
                              style: TextStyle(
                                  color: Colors.white,
                                  fontSize: 18,
                                  fontWeight: FontWeight.w600)),
                          Container(
                            height: 20,
                          ),
                          Text(text,
                              style:
                                  TextStyle(color: Colors.white, fontSize: 14),
                              textAlign: TextAlign.center),
                          Container(
                            height: 30,
                          ),
                          cancel
                              ? Row(
                                  mainAxisAlignment:
                                      MainAxisAlignment.spaceBetween,
                                  children: <Widget>[
                                    Container(
                                      width: 100,
                                      child: RaisedButton(
                                        color: Color(0xFF3A3D5C),
                                        highlightColor:
                                            Color(0xFF3A3D5C).withOpacity(0.8),
                                        textColor: Colors.white,
                                        child: Text('取消'),
                                        onPressed: () {
                                          Navigator.of(context).pop();
                                          oncancel();
                                        },
                                      ),
                                    ),
                                    Container(
                                      width: 100,
                                      child: RaisedButton(
                                        textColor: Colors.white,
                                        child: Text(submitText),
                                        onPressed: () {
                                          Navigator.of(context).pop();
                                          onsubmit();
                                        },
                                      ),
                                    )
                                  ],
                                )
                              : Container(
                                  width: double.infinity,
                                  child: RaisedButton(
                                    textColor: Colors.white,
                                    child: Text(submitText),
                                    onPressed: () {
                                      Navigator.of(context).pop();
                                      onsubmit();
                                    },
                                  ),
                                ),
                          Container(
                            height: 5,
                          )
                        ],
                      ),
                    ),
                    Positioned(
                      top: 0,
                      left: 0,
                      child: Image.asset(
                        'images/tancuang_shang.png',
                        width: 131,
                      ),
                    ),
                    Positioned(
                      bottom: 0,
                      right: 4,
                      child: Image.asset(
                        'images/tancuang_xia.png',
                        width: 148,
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),
        ),
      ),
      onWillPop: () {
        return Future.value(false);
      },
    );
  }
}