【译】 Flex的Preinitialize(预初始化)、Initialize(初始化)、CreationComplete创建完成事件

http://www.mikaflex.com/category/adobe-flex-event/adobe-flex-preinitialize/

 

For containers and controls, Adobe Flex will dispatch preinitialize , initialize and creationComplete Event. When a child is initialized, his parent can be so. It means that a child is always initialized before his parent. However the creationComplete Event is accessible by children, only when all their parents are initialized. Let us take an example:

 

对于容器和控制组件，Flex会派发preinitialize、initialize和creationComplete事件。 当子项初始化完成后，其父容器开始初始化。即子项总是先于父容器初始化完成。然而，只有当所有子项的父容器都初始化完成后，子项才开始派发creationComplete事件。 例子如下：

 

（请注意从17 到23 条，button，textInput，label，image同级。 只有这四个同级的子项创建完成后，他们的上级容器才创建完成。本来我以为的顺序是这样：

1. Button creationComplete;
2. TextInput creationComplete;
3. VBox creationComplete;
4. Label creationComplete;
5. Image creationComplete;
6. HBox creationComplete;
7. Canvas creationComplete;

creationComplete 和前两个事件的顺序确实不同

）

 

Application

Canvas

VBox

Button

TextInput

HBox

Label

Image

 

In chronological order:

1. Application preinitialize;
2. Canvas preinitialize;
3. VBox preinitialize;
4. Button preinitialize;
5. Button initialize;
6. TextInput preinitialize;
7. TextInput initialize;
8. VBox initialize;
9. HBox preinitialize;
10. Label preinitialize;
11. Label initialize;
12. Image preinitialize;
13. Image initialize;
14. HBox initialize;
15. Canvas initialize;
16. Application initialize;
17. Button creationComplete;
18. TextInput creationComplete;
19. Label creationComplete;
20. Image creationComplete;
21. VBox creationComplete;
22. HBox creationComplete;
23. Canvas creationComplete;
24. Application creationComplete.