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如何在 itemRenderer 中反映 list.selectedItem 的变化？

发布于 2024-09-28 17:44:53 字数 130 浏览 4 评论 0原文

当我改变： list.selectedItem.name = 'name2'

然后在我的项目渲染器中

dataChange 事件不会被触发！我无法使用 name 属性更新标签...

有什么帮助吗？

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枉心 2024-10-05 17:44:53

仅对 dataProvider 的添加和删除会自动更新 - 为了自动反映现有项目的修改，正在更新的特定属性应声明为 [Bindable]。检查 name 属性是否可绑定。

public class Item
{
  public var noBinds:String = "initvalue";
  [Bindable]
  public var bindMe:String = "initvalue";

  //a constructor that takes two arguments goes here
}

//dp is the dataProvider of a data grid with two columns:

//this will add new item to the grid
dp.addItem(new Item("blah", "blah1"));

/* update the selected item */

//not bindable
dp.selectedItem.noBinds = "new string; but not shown";

//update the Bindable item
dp.selectedItem.bindMe = "new string; this will be updated";

Only additions and deletions to a dataProvider are updated automatically - for modifications of an existing item to be auto-reflected, the particular property being updated should be declared as [Bindable]. Check if name property is bindable or not.

public class Item
{
  public var noBinds:String = "initvalue";
  [Bindable]
  public var bindMe:String = "initvalue";

  //a constructor that takes two arguments goes here
}

//dp is the dataProvider of a data grid with two columns:

//this will add new item to the grid
dp.addItem(new Item("blah", "blah1"));

/* update the selected item */

//not bindable
dp.selectedItem.noBinds = "new string; but not shown";

//update the Bindable item
dp.selectedItem.bindMe = "new string; this will be updated";

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