Question

I am new to flex, and
I need a datagrid, which contains checkbox (4 no’s) without multiple selection. And I also need a text area which should contain the selected checkbox’s label/data.
I tried using arraycollection but I am not getting.

Answer 1

You probably want 4 radioButtons (and a radioGroup ). But you can do it with checkboxes.

This will get you started:

            <mx:itemRenderer>
                <mx:Component>
                    <mx:VBox>
                      <mx:CheckBox change="onChange(event);"/>
                      <mx:CheckBox change="onChange(event);"/>
                      <mx:CheckBox  change="onChange(event);/">
                      <mx:CheckBox  change="onChange(event);"/>

                        <mx:Script>
                            <![CDATA[
                                private function onChange(evt:Event):void {
                                    //change the data to reflect the selected item.
                                    //update the datagrid's dataProvider 
                                }
                            ]]>
                        </mx:Script>
                    </mx:VBox>
                </mx:Component>
            </mx:itemRenderer>

You will then need to issue an update event to the datagrid’s dataProvider so that the textArea can be updated as well.

You will also need to have the renderer initially select the correct checkbox as well, when the data is set/updated.