我正在为某个应用程序开发登录页面和启动画面，如何将这些路径设置为仅启动一次？
Stack(
fit: StackFit.loose,
children: <Widget>[
Image(
image: AssetImage('images/home.png'),
fit: BoxFit.cover,
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
),
Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
// SizedBox(height: 20.0),
//height was 60
Column(
children: <Widget>[
SizedBox(
height: 30.0,
),
Text(
"SMART HYDROPONICS",
style: TextStyle(
color: Colors.white,
fontSize: 22.0,
fontWeight: FontWeight.bold,
),
),
SizedBox(
height: 30.0,
),
CircleAvatar(
backgroundColor: Colors.white,
radius: 90.0,
child: Container(
alignment: Alignment.center,
child: CircleAvatar(
backgroundColor: Colors.green,
child: Text(
'REGISTER',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.white),
),
radius: 70.0,
),
)),
],
),
SizedBox(height: 20.0),
Form(
key: _key,
autovalidate: _autovalidate,
child: Column(children: <Widget>[
TextFormField(
decoration: InputDecoration(
hintText: "Enter Name",
border: InputBorder.none,
hintStyle: TextStyle(
color: Colors.white,
wordSpacing: 20.0,
fontWeight: FontWeight.normal,
fontSize: 18.0),
icon: Icon(
Icons.nature_people,
size: 30.0,
color: Colors.black,
)),
maxLength: 25,
keyboardType: TextInputType.text,
obscureText: false,
textAlign: TextAlign.justify,
onSaved: (val) {
_name = val;
},
validator: _myName,
),
SizedBox(
height: 20.0,
),
SizedBox(height: 40.0),
TextFormField(
textCapitalization: TextCapitalization.characters,
decoration: InputDecoration(
hintText: "Enter Number",
border: InputBorder.none,
// contentPadding: EdgeInsets.all(0.0),
hintStyle: TextStyle(
color: Colors.white,
wordSpacing: 20.0,
fontWeight: FontWeight.normal,
fontSize: 18.0),
icon: Icon(
Icons.phone,
size: 30.0,
color: Colors.black,
)),
maxLength: 10,
maxLines: 1,
keyboardType: TextInputType.phone,
obscureText: false,
textAlign: TextAlign.justify,
onSaved: (val) {
_number = val;
},
validator: _myNumber,
),
SizedBox(
height: 50.0,
),
TextFormField(
textCapitalization: TextCapitalization.characters,
decoration: InputDecoration(
hintText: "Product ID",
border: InputBorder.none,
// contentPadding: EdgeInsets.all(0.0),
hintStyle: TextStyle(
color: Colors.white,
wordSpacing: 20.0,
fontWeight: FontWeight.normal,
fontSize: 18.0),
icon: Icon(
Icons.settings_brightness,
size: 30.0,
color: Colors.black,
)),
maxLength: 10,
maxLines: 1,
keyboardType: TextInputType.phone,
obscureText: false,
textAlign: TextAlign.justify,
onSaved: (val) {
_number = val;
},
validator: _productId,
),
// SizedBox(height: MediaQuery.of(context).size.height/990000 ),
RaisedButton(
onPressed: _sendToServer,
color: Colors.greenAccent,
child: Text(
"Finish",
style: TextStyle(
color: Colors.white,
),
)),
]),
),
]),
],
)
你需要通过the shared_preferences plugin或其他一些像sqlite或平面文件这样的本地持久存储来保持持久状态（比如登录标记或标记标记为已接收/接受的标记）。