/**
* Helper just to avoid copy&paste'ing code.
*
* <p>Note: since this contains blocking Drive API calls, this will crash if you try to call it
* from the main thread, it can only be called from other threads.
*
* @return null if the folder can not be found.
*/
private DriveFolder checkOrCreateRemoteFolder(
GoogleApiClient googleApiClient, DriveFolder rootFolder, String folderName) {
// check for STORAGE permission
if (!canWriteToStorage()) return null;
Query query =
new Query.Builder()
.addFilter(
Filters.and(
Filters.eq(SearchableField.TITLE, folderName),
Filters.contains(SearchableField.MIME_TYPE, "folder")))
.build();
DriveApi.MetadataBufferResult result =
rootFolder.queryChildren(mGoogleApiClient, query).await();
if (!result.getStatus().isSuccess()) {
Log.e(
mActivity.getResources().getString(R.string.app_name),
"Cannot query folders in the root of Google Drive.");
return null;
} else {
for (Metadata m : result.getMetadataBuffer()) {
if (m.getTitle().equals(folderName)) {
// Folder exists - we found it!
DriveFolder folder = m.getDriveId().asDriveFolder();
result.getMetadataBuffer().release();
return folder;
}
}
}
result.getMetadataBuffer().release();
// Folder not found; let's create it.
MetadataChangeSet changeSet = new MetadataChangeSet.Builder().setTitle(folderName).build();
DriveFolder.DriveFolderResult result1 =
rootFolder.createFolder(googleApiClient, changeSet).await();
if (!result1.getStatus().isSuccess()) {
Log.e(
mActivity.getResources().getString(R.string.app_name),
"Error while trying to create the folder \"" + folderName + "\"");
return null;
}
return result1.getDriveFolder();
}
