This uses the new Storage Access Framework, which was required for
accessing files on the SD Card starting in android-19. But the API
was really limited until android-21, and not really complete until
android-23 or even android-26. So the levels of usability will vary a
lot based on how new the version of Android is.
Since !705 will allow OEMs, ROM makers, etc. to add repos, there needs to
be a way for the user to prevent those from automatically installing or
uninstalling apps for users of the full F-Droid app, which guarantees user
control.
ACRA is sometimes problematic or annoying. Also, whitelabel versions might
want to disable ACRA. The setting the preference defaultValue is an easy
way to do that.
refs #1483
When debugging issues, tracking the client can be quite useful. This makes
an "Expert" preference that adds the app version and a randomly generated,
stored UUID to the query string each time it downloads an index or an app
package.
This is also useful in whitelabeling, for use cases where there needs to be
some kind of identifier to make it work.
This preference is meant for whitelabel builds that are meant to be
entirely controlled by the server, without user interaction, e.g.
"appliances". Some users have asked for such a thing, so it makes sense to
have it available as an expert preference. In general, we want to ensure
that installs/updates always show a notification so that the user is aware
of what is being installed on their computers. That is the same policy as
other app stores like Google Play, etc.
This removes a layer of redundancy where there were defaults set in the
Preferences class, as well as in preferences.xml. This makes it possible
for whitelabel versions to change the default values of the preferences by
changing it only in preferences.xml.
This gives a lot more flexibility to the user to cover bandwidth, power,
and privacy issues related to network traffic. The current implementation
does not represent these prefs as well as it should. For example, it does
not force the traffic over the preferred network type if the other type is
set to "never". Instead it just tracks the "unmetered" status of the
active network, and acts based on that.
closes#1381
This lets people add any URL as a mirror to an existing repo. The UX is
people add URLs via any of the normal ways of adding a new repo via Intents,
like clicking URLs, QRCodes, etc.
