Declare android:installLocation="auto" so the app becomes eligible for the
Settings "change storage" flow and pm move-package. Adoptable storage relocates
the private data directory with the APK, so downloads follow the app onto a USB
drive adopted by an Android TV.
Moving the app changes the private data directory, which invalidated any download
task already enqueued: those pinned BaseDirectory.root plus an absolute directory
that background_downloader persists verbatim, so a queued or paused download
resumed writing to a volume the app no longer owns. Enqueue app-storage targets
against the base directory the downloader re-resolves from the live app context
instead, and drop the tasks and records a previous location left behind so the
download restarts under the current one.
That sweep runs before the downloader is wired up, because initialization delivers
statuses accumulated while suspended — which can mark the row failed, and a failed
row is deliberately not restarted — and because rescheduleKilledTasks re-enqueues
every killed record it finds, stale absolute directory included.
Compare paths by containment rather than by string prefix while making a stored
path relative. A custom download root that merely starts with the base directory's
name is a sibling the app does not own, and stripping it re-rooted the download
inside app storage.
close#1794
edde746