On 02/26/2014 09:52 AM, Joshua Dover wrote:
I’ve been working on offloading our downloads to use Android’s
built-in download manager to gain quite a few benefits (which for
brevity’s sake I won’t cover here, but you can follow the progress in
bug 816318 <https://bugzilla.mozilla.org/show_bug.cgi?id=816318>), but
most importantly a more consistent Android experience that users are
used to.
Unfortunately, the DownloadManager system service was not available
until Gingerbread so we have a few alternatives for Froyo devices that
I’d like some input on:
1) Use our existing implementation that uses nsIDownloadManager
We have an existing download mechanism that works that we can fall
back to for Froyo devices. We can continue shipping this as a fall
back until Froyo usage (currently ~2%) has decreased enough that we
drop support all-together.
There’s also been work on bug 901360
<https://bugzilla.mozilla.org/show_bug.cgi?id=901360> to transition to
the newer Downloads.jsm backend that desktop uses that we could land.
Benefits include putting downloads on a background thread.
2) We lift Froyo’s Download content provider from source
Froyo does have a Downloads content provider
<http://androidxref.com/2.2.3/xref/packages/providers/DownloadProvider/src/com/android/providers/downloads/DownloadProvider.java>
that we could possibly use similar to how it is used here
<http://androidxref.com/2.2.3/xref/packages/apps/Browser/src/com/android/browser/BrowserActivity.java#2900>.
This would make the download for us, and then we would need to build a
simple activity that simply lists the downloads and allows for opening
and deleting. Unfortunately, the content provider is only available to
system-level application due to a system permission
<http://androidxref.com/2.2.3/xref/packages/providers/DownloadProvider/AndroidManifest.xml#10>
required, so we would need to pull the entire source and get that
working ourselves.
I had done similar work before. The source code is available here:
https://github.com/yxl/DownloadProvider
I got many feedback from android developers that they need embed a
download content provider into their apps.
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