dilemmaX<T> static method

Future<T?> dilemmaX<T>(BuildContext context, { required SliverChildDelegate delegate, String rightButton = "OK", String leftButton = "CANCEL", bool centerContent = false, bool? dark, VoidCallback? onTapedRight, VoidCallback? onTapedLeft, })

可扩展内容的对话框选择。

Implementation

static Future<T?> dilemmaX<T>(
  BuildContext context, {

  /// 列表内容
  required SliverChildDelegate delegate,

  /// 按钮名称
  String rightButton = "OK",
  String leftButton = "CANCEL",
  bool centerContent = false,
  bool? dark,
  VoidCallback? onTapedRight,
  VoidCallback? onTapedLeft,
}) {
  double _width = MediaQuery.of(context).size.width * 72 / 100;
  bool _dark = dark ?? (Theme.of(context).brightness == Brightness.dark);
  Color _barrierColor = _dark ? Color(0xaa000000) : Color(0x9effffff);
  Color _backgroundColor = _dark ? Colors.black45 : Colors.white60;
  return showDialog<T>(
    context: context,
    barrierColor: _barrierColor,
    builder: (context) {
      return Dialog(
        backgroundColor: _backgroundColor,
        // 对话框区域背景色
        elevation: 12.0,
        insetPadding: EdgeInsets.zero,
        clipBehavior: Clip.antiAlias,
        shape: const RoundedRectangleBorder(
          borderRadius: _borderRadius,
        ),
        child: Container(
          width: _width,
          constraints: BoxConstraints(maxHeight: 348),
          decoration: BoxDecoration(
              color: Colors.lightBlueAccent,
              // backgroundBlendMode: BlendMode.modulate,
              gradient: LinearGradient(colors: [
                Colors.transparent,
                Colors.transparent,
                Colors.lightBlueAccent,
                Colors.transparent,
              ], stops: [
                0.0,
                0.4,
                0.9,
                1.0,
              ], begin: Alignment.topCenter, end: Alignment.bottomCenter)),
          child: Stack(
            fit: StackFit.expand,
            children: [
              // 内容和按键
              Positioned(
                top: 100,
                left: 0,
                right: 0,
                bottom: 0,
                child: Column(
                  children: [
                    // Container(height: 28, color: Colors.transparent,),
                    ConstrainedBox(
                      constraints:
                          BoxConstraints(maxHeight: 200, maxWidth: _width),
                      child: ListView.custom(
                        shrinkWrap: true,
                        childrenDelegate:
                            SliverChildBuilderDelegate((context, index) {
                          return Padding(
                            padding: const EdgeInsets.all(8.0),
                            child: Container(
                              decoration: BoxDecoration(
                                borderRadius: _borderRadius,
                                color: Colors.pinkAccent[400],
                              ),
                              child: ListTile(
                                leading: Icon(
                                  Icons.star,
                                  size: 44,
                                  color: Colors.lightGreenAccent,
                                ),
                                title: Text("index$index, High light"),
                                subtitle: Text(
                                    "we are list tile, and this is subtitle."),
                              ),
                            ),
                          );
                        }, childCount: 4),
                      ),
                    ),
                    Container(
                      height: 48,
                      decoration: BoxDecoration(
                        borderRadius: const BorderRadius.only(
                            bottomLeft: const Radius.circular(_radiusValue),
                            bottomRight: const Radius.circular(_radiusValue)),
                        color: Colors.orangeAccent.withOpacity(0.8),
                        boxShadow: kElevationToShadow[8],
                      ),
                      child: Row(
                        mainAxisSize: MainAxisSize.max,
                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
                        children: [
                          TextButton(
                              onPressed: () {
                                Navigator.of(context).pop();
                              },
                              child: Text('Cancel')),
                          TextButton(
                              onPressed: () {
                                Navigator.of(context).pop();
                              },
                              child: Text('OK')),
                        ],
                      ),
                    )
                  ],
                ),
              ),
              // 图标
              Positioned(
                top: 0,
                left: 0,
                right: 0,
                child: IgnorePointer(
                  child: Icon(
                    Icons.batch_prediction,
                    size: 128,
                    color: Colors.greenAccent,
                  ),
                ),
              ),
            ],
          ),
        ),
      );
    },
  );
}