javascript - Alternative to web worker on Android -

javascript - Alternative to web worker on Android -

the android aosp browser , webview pre-4.4 doesn't back upwards web worker. i'm porting little web app android using webview, , in web app there web worker used heavy tasks in background , update ui progress.

i looked around , see webview class has evaluatejavascript() function, can used evaluate javascript asynchronously. however, method can take callback phone call @ end of script execution, cannot utilize post message web app's main ui thread update task progress.

is there alternative web worker on android, ability post message , forth main thread?

run http://caniuse.com/#feat=webworkers

you can see web workers run on android - send users browsers

javascript android webview web-worker