I am creating an application that works with Google Drive.
I need to get a list of ALL files inside a folder, but it seems impossible: when I call the listFiles () method, I cannot get all the files inside DriveFolder. But not only that, in the list of files that I get, there are some files that I deleted earlier.
I read that this may be caused by a delay in synchronization due to Google Play services, but I chose the "Sync Now" option in my account settings, so I think the problem is not caused by this delay.
This is the method I'm talking about http://developer.android.com/reference/com/google/android/gms/drive/DriveFolder.html#listChildren(com.google.android.gms.common.api.GoogleApiClient)
And this is the code I wrote:
public class ServicePull extends IntentService implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener{
private GoogleApiClient mApiClient;
public static void startPull(Context context) {
Intent intent = new Intent(context, ServicePull.class);
context.startService(intent);
}
public ServicePull() {
super("ServicePull");
}
@Override
protected void onHandleIntent(Intent intent) {
mApiClient = new GoogleApiClient.Builder(this)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
mApiClient.connect();
}
@Override
public void onConnected(Bundle bundle) {
NotificationStatus.notify(this, "On Connected", "mApiClient Connected");
DriveFolder driveFolder = Drive.DriveApi.getRootFolder(mApiClient);
driveFolder.listChildren(mApiClient).setResultCallback(rootFolderCallback);
}
@Override
public void onConnectionSuspended(int i) {
NotificationStatus.notify(this, "On Suspended", "mApiClient Suspended");
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
NotificationStatus.notify(this, "On failed", "mApiClient failed");
}
final private ResultCallback<DriveApi.MetadataBufferResult> rootFolderCallback =
new ResultCallback<DriveApi.MetadataBufferResult>() {
@Override
public void onResult(DriveApi.MetadataBufferResult metadataBufferResult) {
log("got root folder");
MetadataBuffer buffer = metadataBufferResult.getMetadataBuffer();
log("Buffer count " + buffer.getCount());
for(Metadata m : buffer){
log("Metadata name " + m.getTitle() + "(" + (m.isFolder() ? "folder" : "file") + ")");
if (m.isFolder() && m.getTitle().equals("Neewie"))
Drive.DriveApi.getFolder(mApiClient, m.getDriveId())
.listChildren(mApiClient)
.setResultCallback(fileCallback);
}
}
};
final private ResultCallback<DriveApi.MetadataBufferResult> fileCallback =
new ResultCallback<DriveApi.MetadataBufferResult>() {
@Override
public void onResult(DriveApi.MetadataBufferResult metadataBufferResult) {
log("got file children");
MetadataBuffer buffer = metadataBufferResult.getMetadataBuffer();
log("Buffer count " + buffer.getCount());
for(int i =0;i<buffer.getCount();i++){
Metadata m = buffer.get(i);
log(m.toString());
Drive.DriveApi.getFile(mApiClient, m.getDriveId())
.openContents(mApiClient, DriveFile.MODE_READ_ONLY,
new DriveFile.DownloadProgressListener() {
@Override
public void onProgress(long bytesDownloaded, long bytesExpected) {
int progress = (int) (bytesDownloaded * 100 / bytesExpected);
Log.wtf("TAG", String.format("Loading progress: %d percent", progress));
}
}
)
.setResultCallback(contentsCallback);
}
}
};
final private ResultCallback<DriveApi.ContentsResult> contentsCallback =
new ResultCallback<DriveApi.ContentsResult>() {
@Override
public void onResult(DriveApi.ContentsResult contentsResult) {
log("got file contents");
File file = new File("storage/emulated/0/Downtests/tessing.txt");
file.mkdirs();
try {
InputStream input = contentsResult.getContents().getInputStream();
OutputStream output = new FileOutputStream(file);
byte[] buf = new byte[1024];
int len;
while ((len = input.read(buf)) > 0) {
output.write(buf, 0, len);
}
input.close();
output.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
};
private void log(String s){
Log.wtf("ServicePull", s);
}
}
Obviously, I created a folder called "Neewie" and inside the file. I have a DriveFolder pointing to a Neewie folder, but when listChildren is this, I get a MetadataBuffer with a score of 0.
Do I need to do something to list ALL files? Is there something wrong with the gms library?