Where is the UI state information (used in super.onCreate(Bundle
savedInstanceState)) stored and how can it be deleted from another app
or command line on a rooted phone?
I need to delete the user data (username, password) of both the native
Facebook app (com.facebook.katana) and the stock browser on Android
(com.android.browser) on a rooted phone via command line (which I call
from my own app) or elsewhere from my own app.
This is what I'm calling:
rm /data/data/com.android.browser/cache/webviewCache/*
rm /data/data/com.android.browser/databases/*
killall -9 com.android.browser
rm /data/data/com.facebook.katana/cache/webviewCache/*
rm /data/data/com.facebook.katana/databases/*
killall -9 com.facebook.katana
After I kill the facebook process, I check the running processesand
there is no FB process running anymore. I then restart FB via long-press
on home and choosing the FB app. Previous username/password still show
on the login screen (= same screen as I left it before I killed the
app). When I then press 'back' on the device, and then start the app
again via home long-press / select FB, the login screen is empty.
Where do the values for username/password come when I start FB again in
the first place? I assume that the login activity still retrieves the
savedInstanceState, but how could that be avoided - or else, where are
those UI states actually stored, in order to delete them? Shouldn't the
restarted app, after all it's processes are killed, already be in a new
lifecycle?
Same problem is with the stock browser: if i leave the browser and I'm
on the login page of for example gmail.com where the username/password
is entered (but form not submitted yet), then killing the browser
process, the values (username) entered into the form will still be there
after restarting the app again after it's been killed.
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