notice<T> static method

Future<T?> notice<T>(BuildContext context, { required String title, required String content, String buttonName = "Got it", VoidCallback? onPressed, double indent = 28, bool? dark, })

通知，公告。

用途

• 提示信息
• 展示内容
• 展示说明

参数 |参数名|描述|是否必须|

• context 上下文
• title 信息标题
• content 信息内容
• buttonName 按钮文字。
• onPressed 按钮点击事件响应。
• indent 排版，左边缩进的距离。
• dark 是否强制指定夜间模式或者白天模式，不设置使用系统默认。

Implementation

static Future<T?> notice<T>(
  BuildContext context, {
  required String title,
  required String content,
  String buttonName = "Got it",
  VoidCallback? onPressed,
  double indent = 28,
  bool? dark,
}) {
  // 取宽，屏幕的60%用于对话框。
  double _width = MediaQuery.of(context).size.width * 0.72;
  bool _dark = dark ?? (Theme.of(context).brightness == Brightness.dark);
  return showDialog<T>(
    context: context,
    // Color(0x9eB2EbF2) 忧郁蓝
    barrierColor: _dark ? Color(0xaa000000) : Color(0x9effffff),
    builder: (BuildContext context) {
      return Dialog(
        backgroundColor: _dark ? Colors.black45 : Colors.white60,
        // 对话框区域背景色
        elevation: 12.0,
        insetPadding: EdgeInsets.zero,
        clipBehavior: Clip.hardEdge,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(18.0),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Container(
              width: _width,
              padding: EdgeInsets.fromLTRB(indent, 28.0, 8.0, 8.0),
              child: Text(
                title,
                style: TextStyle(
                    fontWeight: FontWeight.bold,
                    fontSize: 20.0,
                    color: _dark ? Colors.white : Colors.black87),
              ),
            ),
            SizedBox(
              width: _width,
              child: Divider(
                height: 18,
                thickness: 1.8,
                indent: indent,
                color: _dark ? Colors.white : Colors.black87,
              ),
            ),
            Container(
              width: _width,
              padding: EdgeInsets.fromLTRB((indent + 8.0), 8.0, 8.0, 8.0),
              child: Text(
                content,
                style:
                    TextStyle(color: _dark ? Colors.white : Colors.black87),
              ),
            ),
            Container(
              width: _width,
              alignment: Alignment.centerRight,
              padding: EdgeInsets.only(right: 8.0),
              child: TextButton(
                child: Text(
                  buttonName,
                  style: TextStyle(
                    fontSize: 16.0,
                  ),
                ),
                onPressed: onPressed ??
                    () {
                      Navigator.of(context).pop();
                    },
              ),
            )
          ],
        ),
      );
    },
  );
}