UnityUI判断当前焦点是否在输入文本框

通过获取Unity中事件当前选中的物体来判断

private bool IsFocusOnInputText()
    {
        if (EventSystem.current.currentSelectedGameObject == null)
            return false;
        if (EventSystem.current.currentSelectedGameObject.GetComponent() != null)
            return true;
        return false;
    }