Flex中如何利用getTabAt函数遍历TabNavigator容器的各个Tab，并且通过labelPlacement属性设置标签位置

main.mxml

1. <?xml version="1.0" encoding="utf-8"?>
2. <mx:Applicationname="TabNavigator_getTabAt_labelPlacement_test"
3. xmlns:mx="http://www.adobe.com/2006/mxml"
4. layout="vertical"
5. verticalAlign="middle"
6. backgroundColor="white">
8. <mx:Script>
9. <![CDATA[
10. import mx.controls.tabBarClasses.Tab;
12. private function init():void {
13. var tab:Tab;
14. var idx:uint;
15. var len:uint = tabNavigator.numChildren;
16. for (idx=0; idx<len; idx++) {
17. tab = tabNavigator.getTabAt(idx) as Tab;
18. tab.labelPlacement = tab.label;
19. }
20. }
21. ]]>
22. </mx:Script>
24. <mx:TabNavigatorid="tabNavigator"
25. tabWidth="150"
26. tabHeight="60"
27. height="100%"
28. creationComplete="init();">
29. <mx:VBoxlabel="left"
30. icon="@Embed('assets/arrow_left.png')">
31. <mx:Labeltext="labelPlacement = 'left'" />
32. </mx:VBox>
33. <mx:VBoxlabel="right"
34. icon="@Embed('assets/arrow_right.png')">
35. <mx:Labeltext="labelPlacement = 'right'" />
36. </mx:VBox>
37. <mx:VBoxlabel="top"
38. icon="@Embed('assets/arrow_up.png')">
39. <mx:Labeltext="labelPlacement = 'top'" />
40. </mx:VBox>
41. <mx:VBoxlabel="bottom"
42. icon="@Embed('assets/arrow_down.png')">
43. <mx:Labeltext="labelPlacement = 'bottom'" />
44. </mx:VBox>
45. </mx:TabNavigator>
47. </mx:Application>