Flutter：弹窗UI，不带背景色，自定义图片的弹窗

  // 初始化数据
  void _initData() {
    showInviteFriendDialog();
    update(["home"]);
  }
  
  // 显示邀请好友弹窗
  void showInviteFriendDialog() {
    Get.dialog(
      Dialog(
        backgroundColor: Colors.transparent,
        elevation: 0,
        child: <Widget>[
          // 弹窗内容
          <Widget>[
            ImgWidget(path: 'assets/images/home12.png',width: 470.w,height: 470.w,),
            SizedBox(height: 30.w),
            TextWidget.body('邀请好友尊享交易返佣', size: 32.sp, color: AppTheme.colorfff),
            SizedBox(height: 20.w),
            // <Widget>[
            //   TextWidget.body('共同解锁', size: 32.sp, color: AppTheme.colorfff),
            //   TextWidget.body('1000USDT', size: 48.sp, color: AppTheme.colorGreen,weight: FontWeight.w600),
            //   TextWidget.body('奖励', size: 32.sp, color: AppTheme.colorfff),
            // ].toRow(mainAxisAlignment: MainAxisAlignment.center),
            SizedBox(height: 40.w),
            ButtonWidget(
              text: '邀请好友',
              width: 690,
              height: 88,
              borderRadius: 44,
              backgroundColor: AppTheme.colorfff,
              textColor: AppTheme.color000,
              onTap: () {
                Get.back();
                Get.toNamed('/sharePage');
              },
            ),
            SizedBox(height: 60.w),
            const Icon(Icons.close,size: 32,color: Colors.white,).onTap((){
              Get.back();
            }),
          ].toColumn().paddingAll(30.w),
        ].toColumn(crossAxisAlignment: CrossAxisAlignment.center,mainAxisAlignment: MainAxisAlignment.center)
      ),
      barrierColor: Colors.black.withOpacity(0.7),
    );
  }