Ugui learning notes (V) togglegroup makes multiple choice radio boxes

      UGUI There is one Toggle Components Used to make a checkable option , The component panel is shown in the figure below

      among Interactable Option is used to select whether it is operable , If it is not checked, it is inoperable ,isOn It is used to judge the current Toggle Check status of ,OnValueChanged It is the present. Toggle When the value is changed, it will be called , You can add monitoring in the code , You can also drag the object directly to the panel to select a method to listen . Let's focus on this Group attribute .

      Mount one on other objects ToggleGroup Options , In other Toggle Panel Group Admiral, this ToggleGroup Drag objects in , Those Toggle It becomes a group , In a group Toggle There can only be one Toggle Checked .ToggleGroup The panel is shown in the figure below ：

    The panel is very simple, there is only one AllowSwitchOff Properties of , Used to select all Toggle Can it be unchecked at the same time . But it has some methods that need to be explained .

    

ToggleGroup Inherited from UIBehaviour, Multiple Toggle Divide into one group and keep at most one Toggle Status as On. It has one m_Toggles Member variables of , This is a Toggle Type of List, Used to save the registration in this ToggleGroup All of the Toggle. As mentioned above ,Toggle stay OnEnable Register to group,OnDisable Time to move out group, In addition, by group Attribute assignment can also make Toggle Register to the designated ToggleGroup（ Generally, the editor helps us set ）.

The code for registration and removal is simple , Will be toggle Join in m_Toggles Or from m_Toggles Delete .NotifyToggleOn This method will be in addition to the input Toggle All the other Toggle All closed （isOn = false）. We can also call ToggleGroup Some of the ways , for example AnyTogglesOn To determine if there is Toggle Turn on （Toggle Of set Method also calls this method , That is, there is no Toggle Open and group Not all Toggle When it's closed , Force to on ）,ActiveToggles Get open Toggle,SetAllTogglesOff Close all Toggle.

ActiveToggles Get open Toggle, This method returns zero IEnumerable<Toggle> One of this type Toggle Set , Want to put Toggle Type read , You have to pass the following code

        IEnumerable<Toggle> answersGroup = ToggleGroup.ActiveToggles();
        foreach (Toggle t in answersGroup)
        {// Traverse this storage Toggle Button group for IEnumerable, This is C# An enumerated collection of , General direct use foreach Traverse   
            if (t.isOn)// Traverse to a selected Toggle  
            {
                switch (t.name)// According to this Toggle Of name, We give string sex Give different values   
                {
                    case "Toggle0":
                        sex = " male ";
                        break;
                    case "Toggle1":
                        sex = " Woman ";
                        break;
                }
                break;// There is no need to traverse , It can be foreseen later , Are not selected Toggle.  
            }
        }