Ellis Giles

In Adobe Flash / Flex, sometimes in a DataGrid or AdvancedDataGrid, when checking multiple checkboxes a previously checked CheckBox will drop the check mark.  This is really annoying and can cause errors.  It’s a documented bug in Flash player that Adobe hasn’t gotten around to fixing.  You can however fix it yourself by supplying a custom item renderer for each column with a checkbox. 

Basically, create your own renderer based on the CheckBox and supply a click and selected function. The click function is the inverse of the dataField and the selected is just the value of the dataField desired.

<mx:AdvancedDataGrid id=”adList“  editable=”true“  dataProvider=”{aDP}” >

                        <mx:groupedColumns>

                        <mx:AdvancedDataGridColumnGroup headerText=”Group1“>

                        <mx:AdvancedDataGridColumn editable=”false“  headerText=”Col1” dataField=”testA“/>

                        <mx:AdvancedDataGridColumn textAlign=”center” headerText=”Col2” width=”35” editorDataField=”selected”

                              rendererIsEditor=”true” dataField=”check” >

                              <mx:itemRenderer>

                                    <mx:Component>

                                          <mx:CheckBox click=”data.check = !data.check” selected=”{data.check}” />

                                    </mx:Component>

                              </mx:itemRenderer>

                        </mx:AdvancedDataGridColumn>

This is bug #16801 in Flash

https://bugs.adobe.com/jira/browse/SDK-16801

Filed under: Technology | Tagged: Adobe, CheckBox, Flash, Flex