Enhance(/manipulate) a few popular android app's text(/visual) outputs! (examples: whatsapp, gmail, facebook, ...) -


think ideally needed mark or censor list of keywords in visual output systemwide, yet cant require root devices.

that still works on websites through browser plugins.

but thinkable mess popular apps whatsapp, facebook, (one @ time) ?

  1. reading: know possible read/change text inputs yet not generally/all? http://developer.android.com/training/accessibility/service.html

  2. a universal way markup could determining screen coordinate positions of contents ocr , set transparent overlays on fly + algined smooth scrolling, not convinced how can both work , battery efficient (we cope low accuracy in text recognition)

i'm adding reputation bounty. laying out way 1 popular app (top 20 social apps) qualifies accepted answer!

laying out solution "1." 2 or more apps qualifies.

showing why/where work 1 app not qualifies accepted answer.

you cannot modify visual output of app. closest thing can accomplish facebook messenger , lastpass use, feature allows them draw on top of other apps, , lastpass can read contents of app via accessibility permissions. however, allows them draw on existing apps, , in case of lastpass, fill out text input fields. above options, don't think you'll able accomplish you're looking do.


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