我想使用 Flutter 创建一个登录屏幕。
到目前为止，这是我的代码：
Future showInformationDialog(BuildContext context) {
TextEditingController name = TextEditingController();
TextEditingController deadline = TextEditingController();
return showDialog(
context: context,
barrierDismissible: false,
builder: (BuildContext context) {
return AlertDialog(
title: SingleChildScrollView(
physics: NeverScrollableScrollPhysics(),
child: Form(
child: Column(
children: <Widget>[
TextFormField(
controller: name,
maxLength: 40,
textAlign: TextAlign.left,
keyboardType: TextInputType.text,
autocorrect: false,
decoration: InputDecoration(
labelText: 'Name der Klausur: ',
border: OutlineInputBorder(),
),
// The validator receives the text that the user has entered.
validator: (value) {
if (value.isEmpty) {
return 'Gib den Namen der Klausur ein!';
}
return null;
},
),
SizedBox(height: 20),
TextFormField(
controller: deadline,
maxLength: 8,
textAlign: TextAlign.left,
keyboardType: TextInputType.datetime,
autocorrect: false,
decoration: InputDecoration(
labelText: 'Deadline: ',
border: OutlineInputBorder(),
),
// The validator receives the text that the user has entered.
validator: (value) {
if (value.isEmpty) {
return 'Gib das Datum der Klausur ein!';
}
return null;
},
),
SizedBox(height: 20),
DropDownFormField(
titleText: 'Priorität',
hintText: 'Bitte auswählen',
value: '',
dataSource: [
{
"display": "Niedrig",
"value": "Niedrig",
},
{
"display": "Mittel",
"value": "Mittel",
},
{
"display": "Hoch",
"value": "Hoch",
},
],
textField: 'display',
valueField: 'value',
),
SizedBox(height: 20),
],
),
),
),
actions: <Widget>[
FlatButton(
onPressed: () {
return showDialog(
context: context,
builder: (context) {
return AlertDialog(
content: Text(name.text),
);
}
);
},
child: Text('Save'),
color: Colors.blue,
),
FlatButton(
onPressed: () {
return showDialog(
context: context,
builder: (context) {
return AlertDialog(
content: Text(deadline.text),
);
}
);
},
child: Text('Save'),
color: Colors.blue,
),
],
);
});
}
当键盘打开时，它与文本字段发生冲突-> 我收到一个错误：底部溢出 49 像素。
可能是什么问题？
我已经尝试了一切，但我被困在这里。
SingleChildScrollView或者resizeToAvoidBottomPadding: false没有帮助我。也许我不知道如何正确使用它们。
对于任何帮助，我会很高兴。