in StorageProvider/Application/src/main/java/com/example/android/storageprovider/MyCloudProvider.java [476:520]
private void includeFile(MatrixCursor result, String docId, File file)
throws FileNotFoundException {
if (docId == null) {
docId = getDocIdForFile(file);
} else {
file = getFileForDocId(docId);
}
int flags = 0;
if (file.isDirectory()) {
// Request the folder to lay out as a grid rather than a list. This also allows a larger
// thumbnail to be displayed for each image.
// flags |= Document.FLAG_DIR_PREFERS_GRID;
// Add FLAG_DIR_SUPPORTS_CREATE if the file is a writable directory.
if (file.isDirectory() && file.canWrite()) {
flags |= Document.FLAG_DIR_SUPPORTS_CREATE;
}
} else if (file.canWrite()) {
// If the file is writable set FLAG_SUPPORTS_WRITE and
// FLAG_SUPPORTS_DELETE
flags |= Document.FLAG_SUPPORTS_WRITE;
flags |= Document.FLAG_SUPPORTS_DELETE;
}
final String displayName = file.getName();
final String mimeType = getTypeForFile(file);
if (mimeType.startsWith("image/")) {
// Allow the image to be represented by a thumbnail rather than an icon
flags |= Document.FLAG_SUPPORTS_THUMBNAIL;
}
final MatrixCursor.RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, docId);
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SIZE, file.length());
row.add(Document.COLUMN_MIME_TYPE, mimeType);
row.add(Document.COLUMN_LAST_MODIFIED, file.lastModified());
row.add(Document.COLUMN_FLAGS, flags);
// Add a custom icon
row.add(Document.COLUMN_ICON, R.drawable.ic_launcher);
}