Webkit major sequence and class diagram.

Android browser major sequence and class diagram.

Very good and thanks

Do u have the same for MMS?

Sorry, I just studied Browser part. Haven't got time for MMS yet.

these UML diagrams are very useful.

Thanks William

Hi William, I want to know one thing.
How can i debug into the android webkit. so that I can understand it better.

Thanks,
Ajeet Singh

I think you may need add some log information in the WebKit C++ code and use "adb logcat" or the logcat in Eclipse to show the debug information.

It's perfect!
Thanks for sharing, William.

I study your analysis. I find that there is not "DrawPicture". Can you send this to me. My mailbox is "jimmy.guo@live.com". Thanks very much.

The DrawPicture is a native method in Skia graphics engine. It is located somewhere in the external/skia folder of the Google Android source code. I haven't studied it further yet and you can have a look at it.

Thanks for your response.

I am a freshman for android and program. Do you introduce some sites or books about webkit and android? And can you introduce some experiences about learning webkit and android.

This is a very good post. But there are not many discussions. It is very oddball.

The post is just a learning refence for studying WebKit, so there is not much discussion about how to utilize the WebKit or how to use WebKit and so on. I guess you can find more in other arcitles.

According to my experience, you may first go through the overall code structure of the WebKit quickly to get a basic understanding of the WebKit. Then you can study the major components of WebKit step by step such as JavaScript engine, DOM, rendering, html, frame loader and so on. Moreover, when you study each specific topic, you also need read the related spec as well, such as ECMA Script Spec, DOM Spec, CSS Spec, HTML 4 Spec and so on. It can help you understand how those components are implemented. For example, the comments in JavaScriptCore will indicate which section in ECMA spec is implemented. And I think Android Browser is a quite good application for you to study further about the Activity, Service, Contenet Provider, Broadcast and other key Android features.

Hope it will be helpful to you.

Thanks for your advices. The code are huge for me. I should do more effort.

My MSN account is "jimmy.guo@live.com". If you have time, can you add me.

hi William:

Your UML diagram can quickly give us a architecture overview, thank you.

I want to trace framework source code, too. I want to draw UML for others reference. Do you have any suggestion about the UML tools. ex : UML graph, visio, dia, etc ....
Thank you.

I used Rational Rose since I am familiar with it. You may use other tools as you mentioned. However, I haven't tried them before, so I can't give you the advice which one is better.