Thanks for your answers! Joe, adding a 'where'-clause to the content-resolver is a good idea. Thanks also for your follow-up, I'll give it a go! I know the Gallery3D-code is probably not the best as an entry-level example on how to deal with providers and Uris, but I love it's functionality and it is already 80% of what I'd like to achieve, it just seems that the modification I'm planning to do is not as easy as I would have hoped :).
Dianne, I feared as much :-)! I think I'll go with implementing my own content-provider. Do you know if it would have to be exactly the same schema as the current media provider, or could I add one or two columns without messing up the underlying Gallery-methods? I'll just try it out, it's probably too much of a hypothetical question :). My question on SO can be found at: http://stackoverflow.com/questions/3774436/uri-from-filepath Thanks, Nick On Sep 26, 2:54 am, joebowbeer <[email protected]> wrote: > A bit more information: > > The DATA column in the MediaStore provider contains the file path, and > it is possible to create a LIKE selection that selects content from a > specific folder -- using a content: Uri not a file: Uri. > > LocalDataSource looks like the place to start. > > However, I suggest you start with a simpler example. Gallery3D is not > easily modified in this way. > > On Sep 25, 1:40 am, joebowbeer <[email protected]> wrote: > > > > > > > > > The cooliris Gallery3D code? > > >http://android.git.kernel.org/?p=platform/packages/apps/Gallery3D.git > > > How is the image cursor created? I assume it's obtained from a > > MediaStore query. But if you change to a file uri, the MediaStore will > > no longer handle the query... > > > I think you can obtain the desired results with a MediaStore query and > > the original uri if you add a 'selection' that filters on > > mySubDirectory: > > > contentResolver.query(uri, null, > > MediaColumns.DATA + " like '%/mySubDirectory/%'", > > null, null); > > > On Sep 24, 10:19 pm, niko001 <[email protected]> wrote: > > > > [I have asked this question on Stackoverflow, but haven't gotten any > > > replies in 2 days] > > > > Hi, > > > > I am using the Gallery3D-Code for a test-app but want it to only > > > display images from a sub-folder on the SD, not all of the images that > > > are stored on it. To do this, I tried to change > > > > public static final Uri STORAGE_URI = > > > Images.Media.EXTERNAL_CONTENT_URI; > > > > to > > > public static final String ROOT_DIR = > > > Environment.getExternalStorageDirectory().toString() + "/ > > > mySubDirectory"; > > > public static final Uri STORAGE_URI = Uri.fromFile(new > > > File(ROOT_DIR)); > > > > but I guess this is transforming a content://-Uri to a file://-Uri and > > > this may be a problem? > > > > In any case, it doesn't work :-(! Instead of just showing images from > > > the ROOT_DIR-directory and its sub-directories, it shows no images at > > > all ("Gallery empty"). Could anyone point me in the right direction as > > > to what I am doing wrong? > > > > Thanks for your help, > > > Nick -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
