(Android) Proven Code to Hide Soft Keyboard

Programmatically:

this.getWindow().setSoftInputMode(
    WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

XML:

        android:focusable="true"
        android:focusableInTouchMode="true"
        android:descendantFocusability="beforeDescendants"

Programatically 2:

    public void hideSoftKeyboard(){
        if(getActivity().getCurrentFocus() != null){
            InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(), 0);
        }
    }