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Swing组件如何在内部创建，布局，重新绘制，通知事件，......？

[英]How are Swing components internally created, laid out, repainted, notified of events, …?

原文 2009-05-26 18:54:29 1 1 java/ user-interface/ swing/ graphics/ awt

I wonder if there's a good documentation (or a (viewable) ebook) about the lifecycle of Swing components . 我想知道是否有关于Swing组件生命周期的良好文档（或（可查看的）电子书）。

Is "lifecycle" the correct term, anyway? 无论如何，“生命周期”是正确的术语吗？

I hope to find answers to question such as: 我希望找到问题的答案，例如：

How, when, in which order painting methods are called? 如何，何时，以何种顺序调用绘画方法 ？
How, when, which events are called by whom? 如何，何时，由谁调用哪些事件？
What is the exact sequence of method calls for component creation? 组件创建的方法调用的确切顺序是什么？

From time to time I encounter strange behavior of my apps, for example: 我不时遇到我的应用程序的奇怪行为，例如：

ComponentListener's resize event is called before setVisible(true) 在setVisible（true）之前调用ComponentListener的resize事件
(so that root pane has negative dimensions!) （以便根窗格具有负尺寸！）
Some components are laid out correctly only after resizing the JFrame by hand 只有在手动调整JFrame大小后，才能正确布局某些组件
Changing a super class from JPanel to JLayeredPane causes my class to be laid out differently inside an other container. 将超类从JPanel更改为JLayeredPane会导致我的类在其他容器中的布局不同。
And lot of other strange things... 还有很多其他奇怪的事情......

1 个解决方案

I had the same question long ago. 我很久以前就有同样的问题。

I can't believe how hard is to find a good resource about this topic in the internet. 我无法相信在互联网上找到关于这个话题的好资源有多难。

Fortunately I've found this link and now I have it in my bookmark with golden tag. 幸运的是我找到了这个链接，现在我在带有金色标签的书签中找到了它。 :) :)

A Swing Architecture Overview Swing架构概述

Once you have a good grasp of how they work conceptually you will be able to fix most of the problems you mention. 一旦你很好地掌握了它们在概念上的运作方式，你就能解决你提到的大部分问题。

I hope it helps. 我希望它有所帮助。