我正在尝试在 flutter 中制作登录屏幕
我正在使用下面的代码
ModalProgressHUD(
dismissible: false,
child: Container(
color: Colors.white,
child: SafeArea(
child: Scaffold(
body: Container(
height: double.infinity,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/images/login_bg.png'),
fit: BoxFit.fill,
),
shape: BoxShape.rectangle,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Padding(
padding: const EdgeInsets.only(left: 15.0),
child: IconButton(
iconSize: 70,
icon: Image.asset(
'assets/images/back.png',
),
onPressed: () {
Navigator.pop(context);
},
),
),
// Spacer(),
Expanded(
child: SingleChildScrollView(
child: Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
margin: const EdgeInsets.only(
top: 30, bottom: 40),
child: Image.asset(
'assets/images/oricon_logo.png',
height: 100.0,
width: 100.0,
),
),
Column(
crossAxisAlignment:
CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Form(
key: _formKey,
child: new Theme(
data: ThemeData(
accentColor: Colors.purple,
primaryColor:
AppColors.colorBlue,
inputDecorationTheme:
new InputDecorationTheme(
labelStyle:
new TextStyle(
color: AppColors.colorBlue,
fontSize: 20.0,
))),
child: Padding(
padding:
const EdgeInsets.all(20.0),
child: Column(
crossAxisAlignment:
CrossAxisAlignment.center,
children: <Widget>[
TextFormField(
keyboardType:
TextInputType
.emailAddress,
textCapitalization:
TextCapitalization
.none,
focusNode:
_emailFocusNode,
controller:
emailTextController,
maxLines: 1,
maxLength: 40,
// textCapitalization:
// TextCapitalization.none,
style: TextStyle(
color: AppColors
.colorGray),
decoration:
new InputDecoration(
labelText:
"Email address",
counterText: '',
labelStyle:
TextStyle(
fontFamily:
'h_roman',
color: _emailFocusNode
.hasFocus
? AppColors
.colorBlue
: AppColors
.colorGray,
),
enabledBorder:
UnderlineInputBorder(
borderSide: BorderSide(
color: AppColors
.colorGray),
),
focusedBorder:
UnderlineInputBorder(
borderSide: BorderSide(
color: AppColors
.colorBlue),
),
border:
UnderlineInputBorder()),
validator:
(String email) {
if (email.length == 0) {
return 'Please enter email address';
} else {
if (!RegExp(
r"^[a-zA-Z0-9.]+@[a-zA-Z0-9]+\.[a-zA-Z]+")
.hasMatch(
email)) {
return 'Please enter valid email address';
} else {
return null;
}
}
},
onSaved: (String val) {
// _email = val;
},
onChanged: (text) {
// _email = text;
},
),
TextFormField(
focusNode:
_passwordFocusNode,
controller:
passTextController,
maxLength: 20,
style: TextStyle(
fontFamily: 'h_roman',
color: AppColors
.colorGray),
decoration:
new InputDecoration(
counterText: '',
suffixIcon:
IconButton(
icon: Icon(
// Based on passwordVisible state choose the icon
passwordVisible
? Icons
.visibility
: Icons
.visibility_off,
color: AppColors
.colorGray,
),
onPressed: () {
setState(() {
passwordVisible =
!passwordVisible;
});
},
),
labelText:
"Password",
labelStyle:
TextStyle(
fontFamily:
'h_roman',
color: _passwordFocusNode
.hasFocus
? AppColors
.colorBlue
: AppColors
.colorGray,
),
enabledBorder:
UnderlineInputBorder(
borderSide: BorderSide(
color: AppColors
.colorGray),
),
focusedBorder:
UnderlineInputBorder(
borderSide: BorderSide(
color: AppColors
.colorBlue),
),
border:
UnderlineInputBorder()),
keyboardType:
TextInputType.text,
obscureText:
passwordVisible,
validator: (String pass) {
if (pass.length == 0) {
return 'Please enter password';
} else {
return null;
}
},
),
Align(
alignment: Alignment
.bottomRight,
child: Padding(
padding:
const EdgeInsets
.only(
top: 20),
child:
GestureDetector(
onTap: () {
showContactUsDialog(
context);
},
child: Padding(
padding:
const EdgeInsets
.all(8.0),
child: Text(
"Need help?",
style: TextStyle(
fontFamily:
'h_roman',
color: AppColors
.colorBlue,
fontWeight:
FontWeight
.normal,
fontSize:
15.0),
),
),
),
)),
Container(
margin:
const EdgeInsets.only(
top: 40.0),
child: MaterialButton(
textColor: Colors.white,
minWidth: 250.0,
padding:
const EdgeInsets
.all(15.0),
color:
AppColors.colorBlue,
child: Text(
"Login",
style: TextStyle(
fontFamily:
'h_bold',
color:
Colors.white,
// fontWeight: FontWeight.bold,
fontSize: 20.0),
),
shape: RoundedRectangleBorder(
borderRadius:
BorderRadius
.circular(
50.0)),
onPressed: () {
if (Utils()
.isEmptyString(
_token)) {
if (_formKey
.currentState
.validate()) {
debugPrint(
"Email Address -> " +
emailTextController
.text);
debugPrint(
"Password -> " +
passTextController
.text);
Utils()
.getStatus()
.then(
(connectionResult) {
if (connectionResult) {
setState(() {
_saving =
true;
});
_callLoginAPI(
emailTextController
.text,
passTextController
.text);
} else {
Utils().showMessageDialog(
context,
"No internet connection");
}
});
}
} else {
Utils().showMessageDialog(
context,
"Notification token is invalid");
}
},
splashColor: Colors
.redAccent[100],
),
),
],
),
)),
),
],
),
],
),
],
),
// Container(
// margin:
// const EdgeInsets.only(top: 60, bottom: 20),
// child: Row(
// mainAxisAlignment: MainAxisAlignment.center,
// children: <Widget>[
//// FlutterLogo(
//// size: 40,
//// ),
//// FlutterLogo(
//// size: 40,
//// ),
// ],
// ),
// ),
],
),
),
)
],
),
),
),
),
),
inAsyncCall: _saving);
上面的代码在 ios 设备中工作正常，但在 android 屏幕中键盘出现时不会向上滚动
我还检查了下面的一些链接和帖子，但它并没有帮助解决我的问题
- https://github.com/flutter/flutter/issues/10826
- When i select a Textfield the keyboard moves over it
- https://github.com/flutter/flutter/issues/11653
- Flutter TextFormField hidden by keyboard
如果需要更多信息，请告诉我。提前致谢。您的努力将受到赞赏。
最佳答案
如果升级到 Flutter 3.10 后出现此问题，请将 screen_util 库升级到最新版本并设置 useInheritedMediaQuery:true
ScreenUtilInit(
useInheritedMediaQuery: true,
....关于android - flutter : screen not scrolling up when keyboard appears in android，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60051003/