Flutter 輸入控件TextField設置內容並保持光標(cursor)在末尾

　TextField(
                  controller: TextEditingController.fromValue(TextEditingValue(
                  // 設置內容
                  text: inputText,
                  // 保持光標在最后
                  selection: TextSelection.fromPosition(TextPosition(
                      affinity: TextAffinity.downstream,
                      offset: inputText.length)))),
            )