Java DriveId.asDriveFile方法代碼示例

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
/**
 * Returns the app specific {@link DriveFile} if it has already been created. Else
 * returns null.
 */
protected final DriveFile getDriveFile() {
    DebugLog.logMethod();

    DriveApi.MetadataBufferResult metadataBufferResult = Drive.DriveApi.getAppFolder(getGoogleApiClient())
            .listChildren(getGoogleApiClient())
            .await();
    DebugLog.logMessage("Status code: " + metadataBufferResult.getStatus().getStatusCode()
            + "\nStatus message: " + metadataBufferResult.getStatus().getStatusMessage());
    if (!metadataBufferResult.getStatus().isSuccess()) {
        metadataBufferResult.release();
        DebugLog.logMessage("MetadataBufferResult failure");
        return null;
    }

    MetadataBuffer metadataBuffer = metadataBufferResult.getMetadataBuffer();
    DebugLog.logMessage("MetadataBuffer count: " + metadataBuffer.getCount());
    if (metadataBuffer.getCount() == 0) {
        metadataBuffer.release();
        return null;
    }
    DriveId driveId = metadataBuffer.get(0).getDriveId();
    metadataBuffer.release();
    metadataBufferResult.release();
    return driveId.asDriveFile();
}
 

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
@Override
protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
    switch (requestCode) {

        case REQUEST_CODE_CREATOR:
            // Called after a file is saved to Drive.
            if (resultCode == RESULT_OK) {
                Log.i(TAG, "Backup successfully saved.");
                Toast.makeText(this, "Backup successufly loaded!", Toast.LENGTH_SHORT).show();
            }
            break;

        case REQUEST_CODE_OPENER:
            if (resultCode == RESULT_OK) {
                DriveId driveId = data.getParcelableExtra(
                        OpenFileActivityBuilder.EXTRA_RESPONSE_DRIVE_ID);
                //Toast.makeText(this, driveId.toString(), Toast.LENGTH_SHORT).show();
                DriveFile file = driveId.asDriveFile();
                importFromDrive(file);
            }
    }
}
 

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
@Override
        public void onResult(DriveFolder.DriveFileResult result) {
            mConnectionRequested = false; // for testing
            if (!result.getStatus().isSuccess()) {
                showMessage("Error while trying to create the file");
                return;
            }
            DriveId driveId = result.getDriveFile().getDriveId();
            showMessage("Created file: " + driveId);
            if (LDebug.ON) Log.d(LOG_TAG, "XXX Created file: " + driveId);
            DriveFile file = driveId.asDriveFile();
            file.addChangeSubscription(getGoogleApiClient());

            if (LDebug.ON) Log.d(LOG_TAG, "XXX resource ID file: "
                    + result.getDriveFile().getDriveId().getResourceId()); // returns null

//            result.getDriveFile().getMetadata().isCanceled();
        }
 

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
private void writeDataExportToFile(DriveId driveFileId) {
    EditContentParams params = new EditContentParams(
            new ExportDataManager(TheHubActivity.this).readFileByInputStream(),
            driveFileId.asDriveFile()
    );

    new EditContentsAsyncTask(this).execute(params);

}
 

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
/**
 * Create a new file and save it to Drive.
 */
private void readFileFromDrive(DriveId id) {
    final DriveFile f = id.asDriveFile();
    EXECUTOR_SERVICE.execute(() -> {
        DriveApi.DriveContentsResult driveContentsResult =
                f.open(mGoogleApiClient, DriveFile.MODE_READ_ONLY,
                        null).await();
        if (!driveContentsResult.getStatus().isSuccess()) {
            if (BuildConfig.DEBUG)
                Log.d(TAG, "readFileFromDrive: " + driveContentsResult.getStatus());
            return;
        }

        DriveContents driveContents = driveContentsResult.getDriveContents();
        BufferedReader reader = new BufferedReader(
                new InputStreamReader(driveContents.getInputStream()));
        StringBuilder builder = new StringBuilder();
        String line;
        try {
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
            String contentsAsString = builder.toString();
            Gson gson = new Gson();
            NoteLab noteLab = gson.fromJson(contentsAsString, NoteLab.class);
            if (noteLab == null) {
                return;
            }
            if (BuildConfig.DEBUG)
                Log.i(TAG, "readFileFromDrive: " + noteLab.getMoonlights().size());
            mFDatabaseUtils.restoreAll(noteLab);
        } catch (IOException e) {
            Log.e(TAG, "readFileFromDrive: IOException while reading from the stream, ", e);
        }

        driveContents.discard(mGoogleApiClient);
    });

}
 

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
@Override
public void onResult(DriveApi.MetadataBufferResult result) {
    if (!result.getStatus().isSuccess()) {
        showMessage("Problem while retrieving files");
        return;
    }

    if (result.getMetadataBuffer().getCount() == 0) {
        //now create a new file as it doesn't exist

        if (type != Constants.TYPE_RESTORE)
            createFile();
        else
           showMessage("No  backup found");

        return;
    }

    DriveId driveId = result.getMetadataBuffer().get(0).getDriveId();

    if (type == Constants.TYPE_RESTORE){
        //for retrieving the content of the file
        new RetrieveDriveFileContentsAsyncTask(SettingsActivity.this).execute(driveId);
    }
    else{
        //for editing the content of the file
        DriveFile file = driveId.asDriveFile();
        new EditContentsAsyncTask(SettingsActivity.this).execute(file);
    }

}
 

import com.google.android.gms.drive.DriveId; //導入方法依賴的package包/類
/**
 * Deletes the App Data file associated with the {@link DriveId} in {@link SharedPreferences}, if
 * it exists.
 */
private void deleteSavedEquations() {
  final String driveIdStr = mSharedPreferences.getString(DRIVE_ID, null);
  if (driveIdStr != null) {
    DriveId fileId = DriveId.decodeFromString(driveIdStr);

    // [START delete_file]
    // Delete App Data file
    DriveFile sumFile = fileId.asDriveFile();
    mDriveResourceClient.delete(sumFile)
        .addOnSuccessListener(new OnSuccessListener<Void>() {
          @Override
          public void onSuccess(Void aVoid) {
            // Delete completed successfully. UI changes, etc. can now be updated to reflect the
            // change.

            // [START_EXCLUDE]
            // Remove stored DriveId from SharedPreferences
            mSharedPreferences.edit().remove(DRIVE_ID).apply();
            Log.d(TAG, "Past sums deleted.");
            // [END_EXCLUDE]
          }
        })
        .addOnFailureListener(new OnFailureListener() {
          @Override
          public void onFailure(@NonNull Exception e) {
            // Delete was not completed. Inform the user or add failure handling here.

            // [START_EXCLUDE]
            Log.e(TAG, "Unable to delete App Data.", e);
            // [END_EXCLUDE]
          }
        });
    // [END delete_file]
  }
}