I'm using the android.content.CursorLoader
class to create two Cursor
objects to access media stored on the user of my app's device. I'd like to give the user a grid view of their stored images and video which preserves order from the Android Gallery app.
Currently I'm using one Cursor
to access Images and one to access Video. With this approach, all images precede all videos (i.e. they are in two separate groups). Is there a way to access both Images and Video from the same Cursor
? If not, is there a better way to access these media on the device?
For reference, here is the code I am using:
For Images:
CursorLoader cursorLoader = new CursorLoader(
mContext,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
IMAGE_PROJECTION,
null,
null,
MediaStore.Images.Media._ID + " desc"
);
mImageCursor = cursorLoader.loadInBackground();
And Video:
CursorLoader cursorLoader = new CursorLoader(
mContext,
MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
VIDEO_PROJECTION,
null,
null,
MediaStore.Video.Media._ID + " desc"
);
mVideoCursor = cursorLoader.loadInBackground();
After lots of research and playing around with source code, I'm finally a bit more familiar with the Android filesystem. To get a single Cursor
which can access information about both Images
and Video
I used the following:
// Get relevant columns for use later.
String[] projection = {
MediaStore.Files.FileColumns._ID,
MediaStore.Files.FileColumns.DATA,
MediaStore.Files.FileColumns.DATE_ADDED,
MediaStore.Files.FileColumns.MEDIA_TYPE,
MediaStore.Files.FileColumns.MIME_TYPE,
MediaStore.Files.FileColumns.TITLE
};
// Return only video and image metadata.
String selection = MediaStore.Files.FileColumns.MEDIA_TYPE + "="
+ MediaStore.Files.FileColumns.MEDIA_TYPE_IMAGE
+ " OR "
+ MediaStore.Files.FileColumns.MEDIA_TYPE + "="
+ MediaStore.Files.FileColumns.MEDIA_TYPE_VIDEO;
Uri queryUri = MediaStore.Files.getContentUri("external");
CursorLoader cursorLoader = new CursorLoader(
this,
queryUri,
projection,
selection,
null, // Selection args (none).
MediaStore.Files.FileColumns.DATE_ADDED + " DESC" // Sort order.
);
Cursor cursor = cursorLoader.loadInBackground();