从 mx:Repeater 内部获取 mx:CheckBox 值

发布于 2024-07-17 10:46:18 字数 388 浏览 5 评论 0原文

我有一个对象数组，用作中继器的数据源。

<mx:Repeater id="categoryRepeater" dataProvider="{this.allCategories}">
<mx:HBox>
<mx:Spacer width="20"/>
<mx:CheckBox id="categoryCheckBox" label="{categoryRepeater.currentItem.question}"/>
</mx:HBox>
</mx:Repeater>

我希望能够知道列表中的哪些复选框已被选中，但我不知道该怎么做。我知道我可以在单击时添加一个函数，但我不知道如何判断哪个复选框调用了该函数。

原文

I have an an array of objects that I use as the datasource for my repeater.

<mx:Repeater id="categoryRepeater" dataProvider="{this.allCategories}">
<mx:HBox>
<mx:Spacer width="20"/>
<mx:CheckBox id="categoryCheckBox" label="{categoryRepeater.currentItem.question}"/>
</mx:HBox>
</mx:Repeater>

I would like to be able to tell which of the checkboxes in the list have been checked, but I'm not sure how to do it. I know I can add a function when it's clicked, but I don't know how to tell which checkbox called the function.

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梦醒时光 2024-07-24 10:46:18

使用 currentIndex 属性。

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小糖芽 2024-07-24 10:46:18

我意识到这是一篇非常旧的帖子，但我遇到了同样的问题，并且 currentIndex 对我来说并不是一个足够的答案。我发现效果更好的是在单击时创建一个函数：

<mx:Repeater id="rp" dataProvider="{dp}">  
<s:CheckBox height="100%" width="100%" label="{String(rp.currentItem)}"  
click="showAlert(event);"/>
</mx:Repeater>

showAlert 函数看起来像这样：

private function showAlert(evt:MouseEvent):void {
  var curBox:CheckBox = evt.currentTarget as CheckBox;
  var str:String = curBox.content.toString();
  if(curBox.selected)
    Alert.show(str + " clicked");
}

通过这种方式，您可以将事件作为 ActionScript 代码内的复选框来处理，并查找值，例如它是否已被选定等

I realize that this is a very old post, but I had run into the same issue and the currentIndex was not a sufficient answer for me. What I found to work better was to create a function on click:

<mx:Repeater id="rp" dataProvider="{dp}">  
<s:CheckBox height="100%" width="100%" label="{String(rp.currentItem)}"  
click="showAlert(event);"/>
</mx:Repeater>

and the showAlert function looks something like this:

private function showAlert(evt:MouseEvent):void {
  var curBox:CheckBox = evt.currentTarget as CheckBox;
  var str:String = curBox.content.toString();
  if(curBox.selected)
    Alert.show(str + " clicked");
}

This way you can deal with the event as a CheckBox inside of your ActionScript code and find values such as whether or not it has been selected etc.

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