Styjun

I downloaded the SQLite database from Firebase. It saves into device storage (Android/data/package name/files/Download). I want to save the database to the internal directory. (like assets folder to use it). I want no person can access to this file after decompiling app. It worked with error, what's the problem?

private void downloadFileFirebase()

 storageReference = FirebaseStorage.getInstance().getReference("test.sqlite");
 storageReference.getBytes(1024*1024).addOnSuccessListener(new OnSuccessListener<byte[]>() 
 @Override
 public void onSuccess(byte[] bytes) 
 final String path =Environment.getExternalStorageDirectory().getAbsolutePath()
 + DB_PATH ;
 try 
 writeToFile(bytes , path);
 Toast.makeText(MainActivity.this, "DONE", Toast.LENGTH_SHORT).show();
 catch (IOException e)
 e.printStackTrace();
 Toast.makeText(MainActivity.this, "ERROR", Toast.LENGTH_SHORT).show();
 
 
 ).addOnFailureListener(new OnFailureListener() 
 @Override
 public void onFailure(@NonNull Exception e) 
 Toast.makeText(MainActivity.this, "FAILD", Toast.LENGTH_SHORT).show();
 
 );

And:

private void writeToFile(byte[] bytes, String filename) throws IOException 
 FileOutputStream out = new FileOutputStream(filename);
 out.write(bytes);
 out.close();

The error:

java.io.FileNotFoundException: /storage/emulated/0/data/user/0/ir.seljad.sqlitechipher/databases (No such file or directory)

Android data/files directory is the internal storage dir.

assets and raw directories are a build-time resources directories and does not exists on phone. this means you can not download files into them in runtime.

Also files dir is not accessible for release apps unless device is rooted and you can always use some sort of encrypted db.

Environment.getExternalStorageDirectory() will return the external storage path. not internal, you should use Context.getDatabasePath(String name) instead to retrieve the internal database path