Flex移动动作脚本如何按字母顺序排序一个对象的一部分arrayCollection

Question

我有一个数据库的查询作为一个ArrayCollection的对象返回。我想按字母顺序排序对象的一个​​属性。从db.queryResults（）回来，对象属性的名称是DmvValue3。我如何对此进行排序。以下是我的代码和ArrayCollection中属性的屏幕截图。

 private function sortCollection(list:ArrayCollection):ArrayCollection 
     { 
      var sort:ISort = new Sort(); 
      var sortField:SortField = new SortField(null, true); 
      sortField.setStyle("locale", "en-US"); 
      sort.fields = [sortField]; 
      list.sort = sort; 
      list.refresh(); 
      return list; 
     } 

Answer 1

这是未经测试的代码，但它应该让你的正确道路上。

private function sortCollection(list:ArrayCollection):ArrayCollection { 
    var sort:ISort = new Sort(); 
    var sortField:SortField = new SortField(); 
    sortField.name = "DmvValue3"; 
    sortField.caseInsensitive = true; 
    sortField.numeric = true; 
    sortField.descending = true; 

    sort.fields = [sortField]; 

    list.sort = sort; 
    list.refresh(); 

    return list; 
} 

[更新]

private function sortCollection(list:ArrayCollection):ArrayCollection { 
     var sort:ISort = new Sort(); 
     var sortField:SortField = new SortField(); 
     //sortField.name = "DmvValue3"; 
     //sortField.caseInsensitive = true; 
     ////sortField.numeric = true; 
     //sortField.descending = true; 

     //sort.fields = [sortField]; 
     sort.compareFunction = myCompare; 
     list.sort = sort; 
     list.refresh(); 

     return list; 
    } 
    public function myCompare(a:Object, b:Object, fields:Array = null):int { 
     if(a["DmvValue3"] < b["DmvValue3"]) 
      return -1; // -1, if a should appear before b in the sorted sequence 
     if(a["DmvValue3"] == b["DmvValue3"]) 
      return 0; // 0, if a equals b 
     if(a["DmvValue3"] > b["DmvValue3"]) 
      return 1; // 1, if a should appear after b in the sorted sequence 
    }