[移动开发]flutter Positioned绝对定位

return Container(
      margin: EdgeInsets.only(left: 12),
      width: cardWidth,
      height: cardHeihgt,
      decoration: BoxDecoration(
        image: DecorationImage(
          fit: BoxFit.fill,
          image: NetworkImage(widget.listModel.liveStreamCover ?? ''),
        ),
      ),
      child: Stack(
        children: [
          Center(
            child: Container(
              width: 33,
              height: 33,
              child: Image.asset(CommonImages.find_main_liveStream_play),
            ),
          ),
          Positioned(
            left: 12,
            bottom: 27,
            child: Container(
              width: 11,
              height: 12,
              child: Image.asset(
                CommonImages.find_main_liveStream_open,
                fit: BoxFit.cover,
              ),
            ),
          ),
          Positioned(//换行，定位暂时没有更好的想法，以后再说
            left: 26,
            bottom: 25,
            right: 11,
            child: Text(
              '${model.title}',
              style: TextStyle(
                fontSize: 12,
                fontWeight: FontWeight.w400,
                color: Colors.white,
              ),
              maxLines: 1,
              overflow: TextOverflow.ellipsis,
            ),
          ),
          Positioned(
            right: 11,
            bottom: 11,
            child: Text(
              model.watchNumberStr ?? '',
              style: TextStyle(
                fontSize: 9,
                fontWeight: FontWeight.w400,
                color: Colors.white,
              ),
            ),
          ),
        ],
      ),
    );