anchor.diff:            mainAxisSize: MainAxisSize.min,
             children: <Widget>[
               new Padding(
  -                padding: new EdgeInsets.all(5.0),
  +                padding: new EdgeInsets.only(top: 5.0, bottom: 15.0),
                   child: new Center(
                     child: new Text(dialogTitle, style: GSYConstant.normalTextBold),
                   )),
               title,
               new Container(
  -              height: 300.0,
  +              height: MediaQuery.of(context).size.width * 3 / 4,
                 decoration: new BoxDecoration(
                   borderRadius: BorderRadius.all(Radius.circular(4.0)),
                   color: Colors.white,
  
positive.code:       {this.titleController, this.valueController, this.needTitle = true});
  
    @override
    _IssueEditDialogState createState() =>
        _IssueEditDialogState(this.dialogTitle, this.onTitleChanged, this.onContentChanged, this.onPressed, titleController, valueController, needTitle);
  }
  
  class _IssueEditDialogState extends State<IssueEditDialog> {
  
negative.code:               crossAxisAlignment: CrossAxisAlignment.center,
                children: <Widget>[
                  new Expanded(
                      child: new RawMaterialButton(
                          materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
                          padding: EdgeInsets.all(4.0),
                          constraints: const BoxConstraints(minWidth: 0.0, minHeight: 0.0),
                          child: new Text(GSYStrings.app_cancel, style: GSYConstant.subNormalText),
                          onPressed: () {
                            Navigator.pop(context);
                          })),
                  new Container(width: 0.3, height: 25.0, color: Color(GSYColors.subTextColor)),
                  new Expanded(
                      child: new RawMaterialButton(
                          materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
                          padding: EdgeInsets.all(4.0),
                          constraints: const BoxConstraints(minWidth: 0.0, minHeight: 0.0),
                          child: new Text(GSYStrings.app_ok, style: GSYConstant.normalTextBold),
                          onPressed: onPressed)),
                ],
              )
            ],
  