Can make the sample run fine but unable to deploy the lib in any project

[Taprik]

I'm able to run the sample in the library and send mms with image. Perfect.
But I can't add this functionnality in a project.
I've try it several times on existing project, on new projet, ...
Here is what I've done :

1. add the library to gradle and sync
   implementation 'com.klinkerapps:android-smsmms:5.1.0'

2. add the classes of sample (MMSReceiver, permissionActivity, Settings, ...)

3. add this code on my mainActivity (mainly based on the code of the sample in library
   `@Override
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);

    if (PreferenceManager.getDefaultSharedPreferences(this)
            .getBoolean("request_permissions", true) &&
            Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        startActivity(new Intent(this, PermissionActivity.class));
        finish();
        return;
    }
   
    setContentView(R.layout.activity_main);
   
    initSettings();
    initViews();
    initActions();
   
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
   
    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });
   

   }

   private void initSettings() {
   settings = Settings.get(this);

    if (TextUtils.isEmpty(settings.getMmsc())) {
        initApns();
    }
   

   }

   private void initApns() {
   ApnUtils.initDefaultApns(this, new ApnUtils.OnApnFinishedListener() {
   @OverRide
   public void onFinished() {
   settings = Settings.get(MainActivity.this, true);
   }
   });
   }

   private void initViews() {

    sendButton = (Button) findViewById(R.id.send);
   

   }

   private void initActions() {

    sendButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            sendMessage();
        }
    });
   

   }

   public void sendMessage() {
   new Thread(new Runnable() {
   @OverRide
   public void run() {
   com.klinker.android.send_message.Settings sendSettings = new com.klinker.android.send_message.Settings();
   sendSettings.setMmsc(settings.getMmsc());
   sendSettings.setProxy(settings.getMmsProxy());
   sendSettings.setPort(settings.getMmsPort());
   sendSettings.setUseSystemSending(true);

            Transaction transaction = new Transaction(MainActivity.this, sendSettings);
   
            Message message = new Message("coucou", "0663624241");
   
   
            String path = Environment.getExternalStorageDirectory() +
                    File.separator + "MMSSender_Dir" + File.separator + "Animation.jpg";
            Bitmap imag = BitmapFactory.decodeFile(path);
            message.setImage(imag);
   
   
            transaction.sendNewMessage(message, Transaction.NO_THREAD_ID);
        }
    }).start();
   

   }`

4. add the necessary permissions, service , receiver in the manifest

The app is compiling and running. When I click on the send button it runs the sendMessage function but the transaction is not sending new message.
With the sample example I can see in the log cat this
V/Transaction: using lollipop method for sending sms V/Transaction: using system method for sending

What did I miss ?