On Sat, Mar 14, 2009 at 4:37 AM, Gaurav <[email protected]> wrote: > > I will like some clarifications around thumbnails: > > 1. Whose responsibility is it to generate thumbnails - the android OS > or the application developer? >
Pre-cupcake, android (specifically, the camera framework which runs in the mediaserver) generates the thumbnails for you. In cupcake, the responsibility is going to be split between the camera application and the framework. The reason for the split is that certain JPEG images may have thumbnails that exceed the 64k limitation, and will be generated without the thumbnail. The thumbnail, in this case, will be generated out of line by the camera app itself. > 2. If it is that of android OS - Can you please explain when the > thumbnail generation happens and whether it is possible to have images > on my SD card that don't have thumbnails generated for them. > Thumbnails are generated when you request a snapshot, by the DSP. You may turn this off by setting any of the following parameters to zero: thumbnail-width thumbnail-height thumbnail-quality > 3. It seems there are thumbnails of two kinds - micro and mini - most > probably this distinction is based on the size of the thumbnail. Which > one of these is generated? Are both always generated? Unless you override the thumbnail settings, the default is width of 512, height of 384, and quality of 90. I do not suggest you alter these parameters, however, other than turning thumbnails off. > > 4. I am using a gallery to display all thumbnails. > managedQuery( MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, > null, null, null, null); > Will I end up showing duplicates? - As of now I find this doesn't > result in duplicates appearing in my Gallery. > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
