android - What's with the "read Tango-specific data to external storage" permission? -


(that's not typo way, permission asks "reading to storage".)

i'm making google tango app in unity export, upload, download , import adf (area description) files , tango. somewhere along process of downloading , importing adf files, following permission dialog:

grant <app-name> permission read tango-specific data external storage? applications require external storage permission access data

(app name anonymized privacy.)

i haven't been able find specific permission is, nor it's doing. questions following:

  • why come repeatedly every file download/import? both in 1 session , after app restarts, permission dialog comes every file download , import. thought if grant app permission, have permission on?
  • is there specific identifier permission add androidmanifest.xml? make appear once? have <uses-permission android:name="android.permission.write_external_storage" /> <uses-permission android:name="android.permission.read_external_storage" /> in there.
  • what allow/deny? i've tried put in print statements along download , save flow see stops me, seems not stopping process @ all. however, if tap "deny", imported area not come in list of areas, it's doing something. read , write other files in same directory without dialog coming up, i'm inclined believe it's import process, areadescription.importfromfile(areafilepath); returns true ...
  • what's weird wording? "read tango-specific data to external storage"? shouldn't either "read tango-specific data external storage" or perhaps "write tango-specific data external storage"?


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