设置日间模式后 登录 注册页的appbar 变成蓝色，原来是白色的
appBar(String leftTitle, String rightTitle, VoidCallback back) {
return AppBar(
//backgroundColor: Colors.white,
centerTitle: false,
titleSpacing: 0,
elevation: 5,
leading: const BackButton(),
title: Text(leftTitle,
style: const TextStyle(fontSize: 18, color: Colors.black)),
actions: [
InkWell(
onTap: back,
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 10),
alignment: Alignment.center,
child: Text(rightTitle,
style: TextStyle(fontSize: 16, color: Colors.grey[500])),
),
)
],
);
}在这里输入代码