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    @Override
    public void onClick(View view) {
        if (mPublishButton.getTag() == null || Integer.valueOf(R.string.action_publish).equals(mPublishButton.getTag())) {
            ActivityCompat.requestPermissions(ConferenceActivity.this,
                  new String[]{Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA},
                  PUBLISH_REQUEST_CODE);
        } else {
            mPublishButton.setEnabled(false);
            /**
              * Stream is unpublished with method Room.unpublish().
              */
            room.unpublish();
        }
        View currentFocus = getCurrentFocus();
        if (currentFocus != null) {
            InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            inputManager.hideSoftInputFromWindow(currentFocus.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }
});