android - SingleChildScrollView 不起作用？软键盘出现颤动时如何调整布局？
问题描述
我是一个初学者。键盘出现，但布局不会调整大小以使其保持在视图中。我还检查了 SingleChildScrollView 但不起作用。软键盘出现颤动时如何调整布局？
这是我的课：
return new Scaffold(
resizeToAvoidBottomInset: false,
backgroundColor: MyColors.gray_dark,
appBar:
PreferredSize(child: Container(), preferredSize: Size.fromHeight(0)),
body: Stack(
children: <Widget>[
Container(
child: Image.asset(
'assets/images/air_force_golden_jubilee_campus.jpeg',
fit: BoxFit.cover),
width: double.infinity,
height: double.infinity,
),
Container(color: MyColors.primaryDark.withOpacity(0.9)),
SingleChildScrollView(
child: Container(
padding: EdgeInsets.symmetric(vertical: 30, horizontal: 30),
width: double.infinity,
height: double.infinity,
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(height: 30),
Text("Welcome!",
style: MyText.display2(context).copyWith(
color: Colors.white, fontFamily: MyFonts.openSansBold)),
Container(height: 5),
Text(schoolDetails.schoolName,
style: MyText.title(context).copyWith(
color: Colors.white,
fontWeight: FontWeight.w300,
fontFamily: MyFonts.openSansRegular)),
Container(height: 10),
Container(
width: 120,
height: 120,
child: Image.asset(
'assets/images/schools/air_force_bal_bharati_logo.png'),
),
Container(height: 10),
Container(height: 3, width: 40, color: Colors.white),
Container(height: 5),
Text("Log in",
style: MyText.medium(context).copyWith(
color: Colors.white,
fontWeight: FontWeight.bold,
fontFamily: MyFonts.openSansBold)),
SizedBox(),
TextField(
controller: nameController,
style: TextStyle(color: Colors.white),
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: "USERNAME",
labelStyle: TextStyle(
color: Colors.white,
fontFamily: MyFonts.openSansRegular),
enabledBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.white, width: 1),
),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.white, width: 2),
),
),
),
Container(height: 25),
TextField(
style: TextStyle(color: Colors.white),
controller: passwordController,
keyboardType: TextInputType.text,
obscureText: _obscureText,
decoration: InputDecoration(
labelText: "PASSWORD",
labelStyle: TextStyle(
color: Colors.white,
fontFamily: MyFonts.openSansRegular),
enabledBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.white, width: 1),
),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.white, width: 2),
),
suffixIcon: GestureDetector(
onTap: () {
setState(() {
_obscureText = !_obscureText;
});
},
child: Icon(
_obscureText
? Icons.visibility
: Icons.visibility_off,
color: Colors.white),
)),
),
Container(height: 20),
FloatingActionButton(
heroTag: "fab",
elevation: 0,
backgroundColor: Colors.white,
child: Icon(Icons.chevron_right, color: Colors.cyan[800]),
onPressed: () {
/* Navigator.push(context, MaterialPageRoute(builder: (BuildContext context){
return DashboardRoute(schoolDetails);
//return NoticeType();
}));*/
// LoginData data = new LoginData.section("sahood@traxsmart.in", "abc@123ABC");
progressDialog.show();
LoginData data = new LoginData.section(
nameController.text, passwordController.text);
_signIn(data);
},
),
SizedBox(),
Container(
width: double.infinity,
child: FlatButton(
child: Text("forgot password?",
style: TextStyle(
color: Colors.white,
fontFamily: MyFonts.openSansRegular)),
color: Colors.transparent,
onPressed: () {
/* LoginData data = new LoginData.section("+919061855558", "abc@123ABC");
_registerUser(data);*/
// confirm();
Navigator.push(context,
MaterialPageRoute(builder: (BuildContext context) {
return ForgotPassword();
// return NoticeType();
}));
},
),
)
],
),
),
)
],
),
);
当键盘显示删除 resizeToAvoidBottomInset 错误时底部溢出：false。
解决方案
用容器包装您的堆栈小部件，并在该容器上使用单子滚动视图。此外，在 Stack 上分配 Container 的高度和宽度，以避免 Box Constraints 采用无限大小。
return new Scaffold(
backgroundColor: Colors.grey,
appBar:
PreferredSize(child: Container(), preferredSize: Size.fromHeight(0)),
body: SingleChildScrollView(
child: Container(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
child: Stack(
children: <Widget>[
Container(
child: Image.network(
'https://wizardsourcer.com/wp-content/uploads/2019/03/Stackoverflow.png'),
width: double.infinity,
height: double.infinity,
),
Container(color: Colors.grey[600]),
Container(
padding: EdgeInsets.symmetric(vertical: 30, horizontal: 30),
width: double.infinity,
height: double.infinity,
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(height: 30),
Text("Welcome!"),
Container(height: 5),
Text(
'School Name',
),
Container(height: 10),
Container(
width: 120,
height: 120,
child: Image.network(
'https://wizardsourcer.com/wp-content/uploads/2019/03/Stackoverflow.png'),
),
Container(height: 10),
Container(height: 3, width: 40, color: Colors.white),
Container(height: 5),
Text(
"Log in",
),
SizedBox(),
TextField(
style: TextStyle(color: Colors.white),
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: "USERNAME",
labelStyle: TextStyle(
color: Colors.white,
),
enabledBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.white, width: 1),
),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.white, width: 2),
),
),
),
Container(height: 25),
TextField(
style: TextStyle(color: Colors.white),
keyboardType: TextInputType.text,
decoration: InputDecoration(
labelText: "PASSWORD",
labelStyle: TextStyle(
color: Colors.white,
),
enabledBorder: UnderlineInputBorder(
borderSide:
BorderSide(color: Colors.white, width: 1),
),
focusedBorder: UnderlineInputBorder(
borderSide:
BorderSide(color: Colors.white, width: 2),
),
suffixIcon: GestureDetector(
onTap: () {
// setState(() {
// _obscureText = !_obscureText;
// });
},
child:
Icon(Icons.visibility_off, color: Colors.white),
)),
),
Container(height: 20),
FloatingActionButton(
heroTag: "fab",
elevation: 0,
backgroundColor: Colors.white,
child: Icon(Icons.chevron_right, color: Colors.cyan[800]),
onPressed: () {
/* Navigator.push(context, MaterialPageRoute(builder: (BuildContext context){
return DashboardRoute(schoolDetails);
//return NoticeType();
}));*/
// LoginData data = new LoginData.section("sahood@traxsmart.in", "abc@123ABC");
// progressDialog.show();
// LoginData data = new LoginData.section(
// nameController.text, passwordController.text);
// _signIn(data);
},
),
SizedBox(),
Container(
width: double.infinity,
child: FlatButton(
child: Text("forgot password?",
style: TextStyle(
color: Colors.white,
)),
color: Colors.transparent,
onPressed: () {
/* LoginData data = new LoginData.section("+919061855558", "abc@123ABC");
_registerUser(data);*/
// confirm();
// Navigator.push(context,
// MaterialPageRoute(builder: (BuildContext context) {
// return ForgotPassword();
// // return NoticeType();
// }));
},
),
)
],
),
)
],
),
),
),
);
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