Unity 通过tab键切换当前焦点

灰太狼 2023-01-23 10:57 2阅读 0赞

private Dictionary<int, GameObject> dicObj = new Dictionary<int, GameObject>();
            private int index;
    
    
            string playerPrefsAccount = "Account";
            string playerPrefsPwd = "Pwd";
            /// <summary>
            /// 登录页面初始化
            /// </summary>
            protected override void OnStart()
            {
                base.OnStart();
                GetComponent<RectTransform>().position = Vector3.zero;
                GetComponent<RectTransform>().offsetMax = Vector2.zero;
                GetComponent<RectTransform>().offsetMin = Vector2.zero;
                UsernameInput.lineType = InputField.LineType.SingleLine;
    
                UsernameInput.onEndEdit.AddListener(delegate { UsernameInputExit(); });
                PasswordInput.onEndEdit.AddListener(delegate { PasswordInputExit(); });
                system = EventSystem.current;
                dicObj.Add(0, UsernameInput.gameObject);
                dicObj.Add(1, PasswordInput.gameObject);
                dicObj.Add(2, LoginBtn.gameObject);
            }
    
            float intervalEnter = 2f;
            /// <summary>
            /// tab键切换按钮的跳转
            /// </summary>
            void Update()
            {
                if (Input.GetKeyDown(KeyCode.Tab))
                {
                    GameObject hightedObj = system.currentSelectedGameObject;
                    foreach (KeyValuePair<int, GameObject> item in dicObj)
                    {
                        if (item.Value == hightedObj)
                        {
                            index = item.Key + 1;
                            // 超出索引 将Index归零
                            if (index == dicObj.Count)
                            {
                                index = 0;
                            }
                            break;
                        }
                    }
                    // 得到对应索引的游戏物体
                    GameObject obj;
                    dicObj.TryGetValue(index, out obj);
                    system.SetSelectedGameObject(obj, new BaseEventData(system));
                }
                // Enter触发登录按钮事件
                if (Input.GetKeyDown(KeyCode.Return) && system.currentSelectedGameObject == LoginBtn.gameObject)
                {
                    UIDispatcher.Instance.Dispatch(UIFramework.ConstDefine.UITeacherLoginView_LoginBtn);
                }
    }