Google Drive - mayurparmar2/AlarmDemo GitHub Wiki

// Set up the Drive API client
GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(this)
        .addApi(Drive.API)
        .addScope(Drive.SCOPE_FILE)
        .addConnectionCallbacks(this)
        .addOnConnectionFailedListener(this)
        .build();

// Retrieve files from Google Drive
Query query = new Query.Builder()
        .addFilter(Filters.eq(SearchableField.TITLE, "MyFile.txt"))
        .build();
DriveApi.MetadataBufferResult result = Drive.DriveApi.query(mGoogleApiClient, query).await();

// Save files to SQLite database
SQLiteOpenHelper dbHelper = new MyDatabaseHelper(this);
SQLiteDatabase db = dbHelper.getWritableDatabase();
ContentValues values = new ContentValues();
for (Metadata file : result.getMetadataBuffer()) {
    values.put("name", file.getTitle());
    values.put("type", file.getMimeType());
    values.put("size", file.getFileSize());
    values.put("content", getContentBytes(file));
    db.insert("files", null, values);
}
db.close();

// Zip the files
File zipFile = new File("backup.zip");
ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(zipFile));
Cursor cursor = db.rawQuery("SELECT name, content FROM files", null);
while (cursor.moveToNext()) {
    String name = cursor.getString(0);
    byte[] content = cursor.getBlob(1);
    ZipEntry entry = new ZipEntry(name);
    zipOutputStream.putNextEntry(entry);
    zipOutputStream.write(content);
    zipOutputStream.closeEntry();
}
zipOutputStream.close();
cursor.close();

// Upload the zip file to Google Drive
DriveFolder folder = Drive.DriveApi.getRootFolder(mGoogleApiClient);
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
        .setTitle("Backup.zip")
        .setMimeType("application/zip")
        .build();
DriveApi.DriveContentsResult contentsResult = Drive.DriveApi.newDriveContents(mGoogleApiClient).await();
OutputStream outputStream = contentsResult.getDriveContents().getOutputStream();
FileInputStream inputStream = new FileInputStream(zipFile);
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) != -1) {
    outputStream.write(buffer, 0, bytesRead);
}
inputStream.close();
outputStream.close();
Drive.Drive