On Wed, Mar 23, 2011 at 6:46 AM, akshay goel <[email protected]> wrote:
> Thanks Dianne! But I do not understand why this DOES work if the app
> registers for VIEW instead of SEND. Is Android able to handle both MIME
> types and extensions for VIEW but only MIME types for SEND?
Correct.
Let's consider a typical ACTION_SEND with an attachment:
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(whatever));
emailIntent.setType("image/png");
startActivity(emailIntent);
The <data> element, in which you are applying the wildcard pattern, is
applied to the "data" of the Intent. That is the Uri you supply via
the constructor, setData(), or setDataAndType().
However, for ACTION_SEND, there is no data. There is a Uri, but it is
in an Intent extra (EXTRA_STREAM), and nothing in an <intent-filter>
filters on extras.
However, the MIME type is still defined via setType(), regardless of
ACTION_SEND vs. ACTION_VIEW.
In general, file extensions simply do not work well on Android --
content providers like MediaStore do not supply them in Uris, for
example. As Ms. Hackborn indicated, please use MIME types.
--
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy
_The Busy Coder's Guide to Android Development_ Version 3.5 Available!
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