save data to firebase

[sichrif]

is it possible and if it is can anyone share how to do it with me

[adelanov]

the following code I modify in TFLiteObjectDetectionAPIModel.java for get data from Firebase

`........
public static SimilarityClassifier create(
final AssetManager assetManager,
final String modelFilename,
final String labelFilename,
final int inputSize,
final boolean isQuantized, DetectorActivity det)
throws IOException {

final TFLiteObjectDetectionAPIModel d = new TFLiteObjectDetectionAPIModel();


try {
  //Toast.makeText(det.getApplicationContext(), "name is null", Toast.LENGTH_LONG ).show();

  FirebaseStorage storage = FirebaseStorage.getInstance();
  StorageReference storageRef = storage.getReference();
  StorageReference test2 = storageRef.child(FileName);

  File localFile = File.createTempFile("Student", "txt");
  //File localFile = new File(det.getFilesDir(),"test2.txt");
  test2.getFile(localFile).addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
    @Override
    public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {

      try {

        Gson gson = new Gson();
        ObjectInputStream i = new ObjectInputStream(new FileInputStream(localFile));
        //HashMap<String, Recognition> registeredl = (HashMap<String, Recognition>) i.readObject();

        Type type = new TypeToken<HashMap<String, Recognition>>(){}.getType();
        HashMap<String, Recognition> registeredl = gson.fromJson((String)i.readObject(), type);
        //HashMap<String, Recognition> registeredl = (HashMap<String, Recognition>) i.readObject();

        if (registeredl != null){
          d.registered = registeredl;
        }
        i.close();

        Toast.makeText(det.getApplicationContext(), "โหลดข้อมูลเรียบร้อย.", Toast.LENGTH_LONG ).show();
        Log.d("Clique AQUI", "Clique Aqui Adicionado " + registeredl.size());

      } catch (Exception e) {
        Log.d("Clique AQUI", "Clique Aqui erro " + e.toString());
        Toast.makeText(det.getApplicationContext(), "Exception 1" + e.getMessage(), Toast.LENGTH_LONG ).show();
      }
    }
  }).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
      Log.d("Clique AQUI", "Clique Aqui erro " + exception.toString());
      Toast.makeText(det.getApplicationContext(), "Exception 2 " + exception.getMessage(), Toast.LENGTH_LONG ).show();
    }
  });


} catch (Exception e) {

  Log.d("Clique AQUI", "Clique AQUI file created: " + e.toString());
}



String actualFilename = labelFilename.split("file:///android_asset/")[1];
InputStream labelsInput = assetManager.open(actualFilename);
BufferedReader br = new BufferedReader(new InputStreamReader(labelsInput));
String line;

.......`

to save data to firebase i modify in register method

` public void register(String name, Recognition rec,DetectorActivity det) {
registered.put(name, rec);

byte[] bytes=null;
try {

  //  file.createNewFile();
  //write the bytes in file
  {
    Gson gson = new Gson();


    File localFile = new File(det.getFilesDir(),FileName);
    FileOutputStream fileOutputStream = new FileOutputStream(localFile);

    Type type = new TypeToken<HashMap<String, Recognition>>(){}.getType();
    String toStoreObject = gson.toJson(registered,type);

    ObjectOutputStream o = new ObjectOutputStream(fileOutputStream);
    o.writeObject(toStoreObject);
    //o.writeObject(registered);

    o.close();
    /* 26 */
    fileOutputStream.close();

    Toast.makeText(det.getApplicationContext(), "save file completed.", Toast.LENGTH_LONG ).show();

    Log.d("Clique AQUI","Clique AQUI file created: " );
    ///     file.delete();
    Log.d("Clique AQUI","Clique AQUI delete " );
  }

  FirebaseStorage storage = FirebaseStorage.getInstance();
  StorageReference storageRef = storage.getReference();
  StorageReference test2 = storageRef.child(FileName);
  //test2.delete();
  //test2.putStream();

  Uri file = Uri.fromFile(new File(det.getFilesDir(),FileName));


  test2.putFile(file)
          .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
              // Get a URL to the uploaded content
              //Uri downloadUrl = taskSnapshot.get();
              Toast.makeText(det.getApplicationContext(), "Upload Completed.", Toast.LENGTH_LONG ).show();

            }
          })
          .addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception exception) {
              // Handle unsuccessful uploads
              // ...
              Toast.makeText(det.getApplicationContext(), "Upload Failure.", Toast.LENGTH_LONG ).show();
            }
          });

  Log.d("Clique AQUI","Clique Aqui Enviou ");



}catch (Exception e){


  Log.d("Clique AQUI","Clique AQUI file created: " + e.toString());

  //Log.d("Clique AQUI","Clique AQUI file created: " + bytes.length);
  Toast.makeText(det.getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG ).show();

}

}`

I also use Gson to deserialize 2d array

`private Pair<String, Float> findNearest(float[] emb) {

Gson gson = new Gson();

Pair<String, Float> ret = null;

for (Map.Entry<String, Recognition> entry : registered.entrySet()) {
  String name = entry.getKey();

  float distance = 0;
  try {

    // original code 
    //final float[] knownEmb = ((float[][]) entry.getValue().getExtra())[0];

    // -------------------- MODIFY --------------------------------------------------------------/
    float[][] knownEmb2d = gson.fromJson(entry.getValue().getExtra().toString(), float[][].class);
    final float[] knownEmb = knownEmb2d[0];

    for (int i = 0; i < emb.length; i++) {
      float diff = emb[i] - knownEmb[i];
      distance += diff * diff;
    }
  }
  catch (Exception e){
    //Toast.makeText(context, e.getMessage(), Toast.LENGTH_LONG ).show();
    Log.e("findNearest",e.getMessage());
  }
  distance = (float) Math.sqrt(distance);
  if (ret == null || distance < ret.second) {
    ret = new Pair<>(name, distance);
  }
}

return ret;

}`

vdo for this sample i try to face recognitions my student

https://youtu.be/Vfb8x5Jxzro

[panwarunionitc]

Brother i am getting

StorageException has occurred. Object does not exist at location. Storage FireBase
help me plz

[panwarunionitc]

i used same code as given