问题
firstly, it's my first time i post a question on SO so you can feel free to give me advices if i make something wrong. My question is post's title, i am success to upload multi file to google drive but i can not upload them into different sub folders on drive. Thanks in advance
Here is my code:
Upload class to handle upload function:
public class UploadFileActivity /*implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener*/ {
private static final String TAG = "upload_file";
private static final int REQUEST_CODE = 101;
public File textFile;
public GoogleApiClient googleApiClient;
public static String drive_id;
public static DriveId driveID;
public Context mContext;
public String folder_id;
public String foler_backup_id;
public String foler_backup_name;
SharedPreferences sharedPreferences;
public void testDrive(){
Drive.DriveApi.fetchDriveId(googleApiClient,folder_id).setResultCallback(idCallback);
}
final private ResultCallback<DriveApi.DriveIdResult> idCallback = new
ResultCallback<DriveApi.DriveIdResult>() {
@Override
public void onResult(DriveApi.DriveIdResult driveIdResult) {
if(!driveIdResult.getStatus().isSuccess()){
Toast.makeText(mContext,"Cannot find DriveId. Are you authorized to view this file?",Toast.LENGTH_LONG).show();
return;
}
Log.d("check_up", "1");
driveID = driveIdResult.getDriveId();
final DriveFolder folder = driveID.asDriveFolder();
folder.listChildren(googleApiClient).setResultCallback(metadataResult);
/* Drive.DriveApi.newDriveContents(googleApiClient)
.setResultCallback(driveContentsCallback);*/
}
};
/*callback on getting the drive contents, contained in result*/
final private ResultCallback<DriveContentsResult> driveContentsCallback = new
ResultCallback<DriveContentsResult>() {
@Override
public void onResult(DriveContentsResult result) {
if (!result.getStatus().isSuccess()) {
Log.i(TAG, "Error creating new file contents");
return;
}
final DriveFolder folder = driveID.asDriveFolder();
Log.d("check_folder",folder.toString());
final DriveContents driveContents = result.getDriveContents();
new Thread() {
@Override
public void run() {
OutputStream outputStream = driveContents.getOutputStream();
addTextfileToOutputStream(outputStream);
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
.setTitle(textFile.getName())
.setMimeType("text/plain")
.setDescription("This is a text file uploaded from device")
.setStarred(true).build();
//root folder
/*Drive.DriveApi.getRootFolder(googleApiClient)
.createFile(googleApiClient, changeSet, driveContents)
.setResultCallback(fileCallback);*/
//file in folder
folder.createFile(googleApiClient, changeSet, driveContents)
.setResultCallback(fileCallback);
//file in app folder
/*Drive.DriveApi.getAppFolder(googleApiClient)
.createFile(googleApiClient, changeSet, driveContents)
.setResultCallback(fileCallback);*/
}
}.start();
}
};
/*get input stream from text file, read it and put into the output stream*/
private void addTextfileToOutputStream(OutputStream outputStream) {
Log.i(TAG, "adding text file to outputstream...");
byte[] buffer = new byte[1024];
int bytesRead;
try {
BufferedInputStream inputStream = new BufferedInputStream(
new FileInputStream(textFile));
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
} catch (IOException e) {
Log.i(TAG, "problem converting input stream to output stream: " + e);
e.printStackTrace();
}
}
/*callback after creating the file, can get file info out of the result*/
final private ResultCallback<DriveFileResult> fileCallback = new
ResultCallback<DriveFileResult>() {
@Override
public void onResult(DriveFileResult result) {
if (!result.getStatus().isSuccess()) {
Log.i(TAG, "Error creating the file");
Toast.makeText(mContext,
"Error adding file to Drive", Toast.LENGTH_SHORT).show();
return;
}
Log.i(TAG, "File added to Drive");
Log.i(TAG, "Created a file with content: "
+ result.getDriveFile().getDriveId());
/*Toast.makeText(mContext,
"Files successfully added to Drive", Toast.LENGTH_SHORT).show();*/
listener.onReceive();
final PendingResult<DriveResource.MetadataResult> metadata
= result.getDriveFile().getMetadata(googleApiClient);
metadata.setResultCallback(new
ResultCallback<DriveResource.MetadataResult>() {
@Override
public void onResult(DriveResource.MetadataResult metadataResult) {
Metadata data = metadataResult.getMetadata();
Log.i(TAG, "Title: " + data.getTitle());
drive_id = data.getDriveId().encodeToString();
Log.i(TAG, "DrivId: " + drive_id);
driveID = data.getDriveId();
Log.i(TAG, "Description: " + data.getDescription().toString());
Log.i(TAG, "MimeType: " + data.getMimeType());
Log.i(TAG, "File size: " + String.valueOf(data.getFileSize()));
}
});
}
};
final private ResultCallback<DriveApi.MetadataBufferResult> metadataResult = new
ResultCallback<DriveApi.MetadataBufferResult>() {
@Override
public void onResult(DriveApi.MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
//showMessage("Problem while retrieving files");
Log.d("check_title", "Problem while retrieving files");
return;
}
Log.d("check_folder_backup",foler_backup_name);
for(int i = 0;i<result.getMetadataBuffer().getCount();i++){
Metadata metadata = result.getMetadataBuffer().get(i);
if(metadata.isFolder()){
if(metadata.getTitle().equals(foler_backup_name)){
foler_backup_id = metadata.getDriveId().getResourceId();
break;
}
}
Log.d("check_title",metadata.getTitle() + " " + metadata.isFolder());
}
//Log.d("check_folder_backup_id",foler_backup_id);
if(foler_backup_id==null){
Drive.DriveApi.fetchDriveId(googleApiClient,folder_id).setResultCallback(preCreateFolder);
}else {
Drive.DriveApi.fetchDriveId(googleApiClient,foler_backup_id).setResultCallback(preCreateFile);
}
}
};
final private ResultCallback<DriveApi.DriveIdResult> preCreateFile = new
ResultCallback<DriveApi.DriveIdResult>() {
@Override
public void onResult(DriveApi.DriveIdResult driveIdResult) {
if(!driveIdResult.getStatus().isSuccess()){
Toast.makeText(mContext,"Cannot find DriveId. Are you authorized to view this file?",Toast.LENGTH_LONG).show();
return;
}
Log.d("check_up", "10");
driveID = driveIdResult.getDriveId();
Log.d("check_drive_id",driveID.toString());
//folder.listChildren(googleApiClient).setResultCallback(metadataResult);
Drive.DriveApi.newDriveContents(googleApiClient)
.setResultCallback(driveContentsCallback);
}
};
final ResultCallback<DriveApi.DriveIdResult>preCreateFolder = new ResultCallback<DriveApi.DriveIdResult>() {
@Override
public void onResult(DriveApi.DriveIdResult driveIdResult) {
if(!driveIdResult.getStatus().isSuccess()){
Log.d("Check_error","Cannot find DriveId. Are you authorized to view this file?");
return;
}
Log.d("Check_error","4");
DriveId driveId = driveIdResult.getDriveId();
DriveFolder folder = driveId.asDriveFolder();
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
.setTitle(foler_backup_name).build();
folder.createFolder(googleApiClient,changeSet)
.setResultCallback(createFolderCallBack);
}
};
final ResultCallback<DriveFolder.DriveFolderResult> createFolderCallBack = new ResultCallback<DriveFolder.DriveFolderResult>() {
@Override
public void onResult(DriveFolder.DriveFolderResult driveFolderResult) {
if(!driveFolderResult.getStatus().isSuccess()){
return;
}
Log.d("thong_bao","Folder successfully created");
Drive.DriveApi.fetchDriveId(googleApiClient,foler_backup_id).setResultCallback(preCreateFile);
}
};
public interface OnCatch{
public void onReceive();
}
private OnCatch listener;
public void setCatch(OnCatch listener){
this.listener = listener;
}
}
回答1:
You're creating files based on 1 driveId. You want to create/upload files from different subfolders, you need to have different driveId objects per subfolder.
Another possible solution would be for you to use the Drive REST APIs and call Batch Requests (thru asynctask) when creating/uploading files in to different subfolders.
来源：https://stackoverflow.com/questions/34984163/how-to-upload-multi-files-to-different-folders-on-google-drive-at-the-same-time