flutter 點擊空白頁面 讓TextField失去焦點

 

 

body:{
    child:  GestureDetector(
        behavior: HitTestBehavior.translucent,
         onTap: () {
             // 觸摸收起鍵盤
              FocusScope.of(context).requestFocus(FocusNode());;
        }
        child: Contariner()
    } 
}