ReadIt = new TessBaseAPI();
ReadIt.init(datapath,"eng");

class ProcessImageAsync extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... voids) {
        try{

            ReadIt.setImage(new File(currentPhotoPath));
            return ReadIt.getUTF8Text();
        }catch (Exception ex){

            ex.printStackTrace();
            return "";
        }

    }

    @Override
    protected void onPostExecute(String s) {
        if(!s.equalsIgnoreCase("")){
            TextView textView = (TextView)findViewById(R.id.textView);
            textView.setText(s);
        }else{
            Utility.showToast(MainActivity.this, "invalid Data");
        }

    }
}