567858 - Allow installation to SD card in Android 2.2

Status: RESOLVED FIXED

(Core Graveyard :: Widget: Android, defect)

Description

[Matt Brubeck (:mbrubeck)]

Attachment: patch

This patch enables installation to the SD card in Android 2.2 ("Froyo").  It sets installLocation to "auto" which lets the OS decide whether to use internal or external storage.  It seems to use internal storage by default when there is space available.  See:
http://developer.android.com/guide/appendix/install-location.html

There is also a "preferExternal" option, but "auto" may be better for performance reasons.  In my completely unscientific stopwatch tests, startup was about 100ms faster from internal storage (measuring from touching the icon on the home screen until the urlbar appears).  "Cold" tests were after rebooting the phone; "warm" tests were after killing the Fennec process.

Cold (SD card):  6.807 seconds
Cold (internal): 6.677 seconds

Warm (SD card):  3.29, 3.32, 3.34 (avg 3.32 stdev .02)
Warm (internal): 3.22, 3,21, 3.20 (avg 3.21 stdev .01)

This patch is against the mozilla-droid repo and it requires the Android 2.2 SDK.

Comment 1

[Brad Lassey [:blassey] (use needinfo?)]

Comment on attachment 447180 [details] [diff] [review]
patch

auto seems like the safest option for now

Comment 2

[Brad Lassey [:blassey] (use needinfo?)]

pushed http://hg.mozilla.org/mozilla-central/rev/dfeb5568bf9f