Unity/UIRadio

toggleGroupを使ってradio選択を行う

isOnをfalseにして、共通のtoggleGroupを、toggleのgroupへ設定する

サンプル

GameObject aToggleObj = GameObject.Find("AToggle");
GameObject bToggleObj = GameObject.Find("BToggle");
GameObject cToggleObj = GameObject.Find("CToggle");
GameObject canvasObj = GameObject.Find("Canvas");

aToggleObj.GetComponent<Toggle>().isOn = false;
bToggleObj.GetComponent<Toggle>().isOn = false;
cToggleObj.GetComponent<Toggle>().isOn = false;

ToggleGroup toggleGroup = canvasObj.AddComponent<ToggleGroup>();
aToggleObj.GetComponent<Toggle>().group = toggleGroup;
bToggleObj.GetComponent<Toggle>().group = toggleGroup;
cToggleObj.GetComponent<Toggle>().group = toggleGroup;

参考：https://qiita.com/JunShimura/items/453ab90ecafd2dd7abd8

toggleを全部オフへ

toggleGroup.SetAllTogglesOff();