Common Browser Application Development Knowledge

1. the browser generates the default UA

The UA generated by the android browser is actually android. webview. websettingsclassic. getcurrentuseragent (), according to build. version. release, build. model to generate system versions, models, and other information to assemble and generate UA

2. Android webview prints the DOM tree and render tree

1. Use webviewclassic. dumpdomtree (Boolean tofile), webviewclassic. dumprendertree (Boolean tofile), and webviewclassic. dumpdisplaytree ()
2. Enable the android_dom_logging switch in source/WebKit/Android/androidlog. h.
3. Call webviewclassic. fromwebview (webview). dumpdomtree (true )...
Domtree.txt

*#document0x77e3af80html0x77b10650HTML0x77e3c098HEAD0x7816f850BODY0x7816f8a8VIDEO0x77e3b8b8#text0x77afc0f8 "\nYour browser does not support the video tag.\n"

Rendertree.txt

layer at (0,0) size 980x1325  RenderView at (0,0) size 980x1325layer at (0,0) size 980x220  RenderBlock {HTML} at (0,0) size 980x220    RenderBody {BODY} at (8,8) size 964x204      RenderText {#text} at (0,0) size 0x0layer at (8,8) size 320x200  RenderVideo {VIDEO} at (0,0) size 320x200layer at (8,8) size 320x200  RenderBlock (relative positioned) {DIV} at (0,0) size 320x200layer at (8,160) size 320x48  RenderFlexibleBox (positioned) {DIV} at (0,152) size 320x48    RenderButton {INPUT} at (0,0) size 48x48    RenderFlexibleBox {DIV} at (48,0) size 224x48      RenderSlider {INPUT} at (0,0) size 224x48        RenderBlock {DIV} at (0,8) size 32x32    RenderButton {INPUT} at (272,0) size 48x48

Common Browser Application Development Knowledge