public void loadImagefromGallery() {
        //create intent to open image application like Gallery, Google Photos
        Intent galleryIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        //Start intent
        startActivityForResult(galleryIntent, RESULT_LOAD_IMAGE);
    }

    //when image is selected from gallery
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        try {
            //when image is picked
            if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
            //get image from data
                Uri selectedImage = data.getData();
                String[] filePathColumn = {MediaStore.Images.Media.DATA};

                //Get the cursor
                if (selectedImage != null) {
                    Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
                    if (cursor != null) {
                        cursor.moveToFirst();
                        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                        imgPath = cursor.getString(columnIndex);
                        cursor.close();
                    }
                }

                //set image in imageView
                ivRegisterPhoto.setImageBitmap(BitmapFactory.decodeFile(imgPath));

                //get the image's filename
                String[] fileNameSegments = imgPath.split("/");
                fileName = fileNameSegments[fileNameSegments.length - 1];
            } else {
                Toast.makeText(this, "You Haven't picked image", Toast.LENGTH_LONG).show();
            }
        } catch (Exception e) {
            Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG).show();
        }
    }