Android webview如何使用webkit？

Question

I know that webkit is a layout engine used for display HTML content in web browser. I looked at Webkit ports and found no stuffs related to Android. I also looked at Android source folder for WebView class, but I can't see how Webview is related to Webkit.

I want to know how webkit is used in Android webview, how to customize webkit ?

I also want to know the threading mechanism used in webkit, how it uses thread pool for processing layout and javascript (especially for Android)

I really need help. Thanks in advance.

UPDATE

I look into WebView.java , WebViewCore.java and JniUtil.java in webkit package . Particularly in JniUtil.java there is

static {
        System.loadLibrary("webcore");
        System.loadLibrary("chromium_net");
}

Where are webcore and chromium_net ? Are they related to this webkit source ?

Answer 1

the following picture: android architecture -

webkit located on the libraries layer. and webkit source was developed by c/c++.

I think android webview connect to webkit by using jni (java native interface). You can view android source (c++ part). I think the solution there.

EDIT: You can see the class android.webkit.WebViewCore : On static constructor:

static {
    // Load libwebcore and libchromium_net during static initialization.
    // This happens in the zygote process so they will be shared read-only
    // across all app processes.
    try {
        System.loadLibrary("webcore");
        System.loadLibrary("chromium_net");
    } catch (UnsatisfiedLinkError e) {
        Log.e(LOGTAG, "Unable to load native support libraries.");
    }
}

I think you can find in webcore & chromium_net (android source c++)

Update: I find the link jni of android webkit