Call checkboxFunction on Java - Android Studio

I created 2 checkbox on layout.I created onCheckboxClicked function, but I need call the function into onclick function. Because I need return data as a null if visibility of textview set as a gone.

My Code:

public void onCheckboxClicked(View view) {

    switch(view.getId()) {

        case R.id.tekyon:

            this.mGidisDonus.setChecked(false);
            baslTarih.setVisibility(View.GONE);
            bitisTarih.setVisibility(View.GONE);
            baslSaat.setVisibility(View.GONE);
            bitisSaat.setVisibility(View.GONE);
            mtektarih.setVisibility(View.VISIBLE);
            mtekSaat.setVisibility(View.VISIBLE);
            break;

        case R.id.gidisdonus:

            mTekYon.setChecked(false);

            baslTarih.setVisibility(View.VISIBLE);
            bitisTarih.setVisibility(View.VISIBLE);
            baslSaat.setVisibility(View.VISIBLE);
            bitisSaat.setVisibility(View.VISIBLE);
            mtektarih.setVisibility(View.GONE);
            mtekSaat.setVisibility(View.GONE);
            break;


    }
}