GridView example: load images to GridView from SD Card in background

Recall from the " old exercise of GridView ", loading images to GridView from SD Card in onCreate() method running in main thread....

List files in directory with specified type

The example List all 'jpg' files in given directoty: private File[] getJpgFiles(File f){ File[] files = f.listFiles(new FilenameF...

Convert between Uri and file path, and load Bitmap from.

What return from Android build-in Gallery App is Uri, in the form of "content://media/...". This exercise demonstrate how to conve...