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so i have a text field in witch the user will enter the password and i want to display at the end that icon if the user click on it it will show the password else it's going to hidden . the text field is inside the container basically as shown in the picture . How to do it ?
Container(
height: MediaQuery.of(context).size.height * 0.08,
margin: const EdgeInsets.symmetric(horizontal: 5),
decoration: BoxDecoration(
color: const Color(0xFFEFEDED),
border: Border.all(color: Colors.transparent),
borderRadius: BorderRadius.circular(10),
),
child: Padding(
padding: const EdgeInsets.only(left: 8.0),
child: Row(
children: [
Icon(Icons.remove_red_eye_outlined),
TextFormField(
controller: controller,
keyboardType:
isUrl ? TextInputType.url : TextInputType.text,
decoration: const InputDecoration(
border: InputBorder.none,
),
),
],
),
),
)
,
The following code enable and toggles the show/hide text by pressing the "eye" button on the far right.
It works with a boolean variable.
Remember to have a Stateful Widget.
bool hidden;
#override
void initState() {
hidden = true;
super.initState();
}
TextFormField(
controller: controller,
obscureText: hidden,
keyboardType: isUrl ? TextInputType.url : TextInputType.text,
decoration: InputDecoration(
border: InputBorder.none,
suffixIcon: IconButton(
onPressed: () => setState(() {
hidden = !hidden;
}),
icon: const Icon(Icons.remove_red_eye_outlined))),
)
return Scaffold(
body: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Stack(
children: [
Positioned(
width: MediaQuery.of(context).size.width,
height: 25.0*SizeConfig.heightMultiplier,
child:Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xff009cba), Color(0xff000e11)])
),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Expanded(flex:3,
child: Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.end,
children: [
FittedBox(child: Text("Firm Details",style: GoogleFonts.lato(color: Color(0xfffbfbfb),fontSize: 1.6*SizeConfig.textMultiplier),/*TextStyle(color: Color(0xfffbfbfb),)*/)),
SizedBox(height: 0.5*SizeConfig.heightMultiplier,),
FittedBox(child: Text("Please select the category that best describes your business model.",style: GoogleFonts.lato(color: Color(0xffb3fbfbfb),fontSize: 1.3*SizeConfig.textMultiplier) /*TextStyle(color: Color(0xffb3fbfbfb),fontSize: 12.0)*/,)),
],
),
),
),
Expanded(flex:1,child:Container(
width: 10.0*SizeConfig.widthMultiplier,
height: 10.0*SizeConfig.heightMultiplier,
child:Image.asset("assets/images/firmDetail.png",width:1.0*SizeConfig.widthMultiplier,height: 1.0*SizeConfig.heightMultiplier,),
), ),
],
),
), ),
Positioned(
top:20.0*SizeConfig.heightMultiplier,
child:Container(
width: MediaQuery.of(context).size.width,
height: 500.0*SizeConfig.heightMultiplier,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5.0*SizeConfig.widthMultiplier),
color: Colors.white,
),
child:new Container(
child: ListView(
scrollDirection: Axis.vertical,
children: <Widget>[
SizedBox(height: 2.0*SizeConfig.heightMultiplier,),
Center(child: Padding(
padding: EdgeInsets.all(1.8*SizeConfig.heightMultiplier),
child: Text("Please select the category that best describes your business model.",style: GoogleFonts.lato(fontWeight: FontWeight.bold),),
)),
horizontalList1,
verticalList, // here vertical list
],
),
),
),
),
],
),
),
);
here in widget verticallist Listview is not scrolling,but when we add Sizedbox after form with fixedheight then it is scrolling but i dont need fixed height for scrollview
Widget verticalList = new Container(
margin: EdgeInsets.symmetric(vertical: 0*SizeConfig.heightMultiplier),
height: MediaQuery.of(context).size.height,
child:ListView(
shrinkWrap: true,
scrollDirection: Axis.vertical,
children: [
Form(
key: _formKey,
child:ListView(
shrinkWrap: true,
children: [
Padding(
padding:EdgeInsets.only(left:6.0*SizeConfig.widthMultiplier,right: 6.0*SizeConfig.widthMultiplier,top:1.8*SizeConfig.widthMultiplier,bottom: 1.8*SizeConfig.widthMultiplier),
child: new TextFormField(
validator: (String value) {
if (value.isEmpty) {
return 'PinCode';
} else {
return null;
}
},
keyboardType: TextInputType.phone,
controller: _pincode,
// selectionColor:Color(0xffe4065f),
style: GoogleFonts.lato(fontSize: 1.6*SizeConfig.textMultiplier,),
decoration: const InputDecoration(
labelText: "PinCode",
labelStyle: TextStyle(color: Color(0xffe4065f)),
focusColor: Color(0xffe4065f),
hintText:
"PinCode",
hintStyle: TextStyle(fontSize: 13.0),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(
color: Color(0xffe4065f))),
),
// style: Theme.of(context).textTheme.body1,
),
),
Padding(
padding:EdgeInsets.only(left:6.0*SizeConfig.widthMultiplier,right: 6.0*SizeConfig.widthMultiplier,top:1.8*SizeConfig.widthMultiplier,bottom: 1.8*SizeConfig.widthMultiplier),
child: new TextFormField(
validator: (String value) {
if (value.isEmpty) {
return 'PAN of the unit. is required';
} else {
return null;
}
},
keyboardType: TextInputType.text,
controller: _pan,
// selectionColor:Color(0xffe4065f),
style: GoogleFonts.lato(fontSize: 1.6*SizeConfig.textMultiplier,),
decoration: const InputDecoration(
labelText: "PAN of the unit",
labelStyle: TextStyle(color: Color(0xffe4065f)),
focusColor: Color(0xffe4065f),
hintText:
"PAN of the unit",
hintStyle: TextStyle(fontSize: 13.0),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(
color: Color(0xffe4065f))),
),
// style: Theme.of(context).textTheme.body1,
),
),
Padding(
padding:EdgeInsets.only(left:6.0*SizeConfig.widthMultiplier,right: 6.0*SizeConfig.widthMultiplier,top:1.8*SizeConfig.widthMultiplier,bottom: 1.8*SizeConfig.widthMultiplier),
child: FormField<String>(
builder: (FormFieldState<String> state) {
return InputDecorator(
decoration: InputDecoration(
labelText: "Constitution",
errorStyle: TextStyle(color: Colors.redAccent, fontSize: 1.6*SizeConfig.textMultiplier),
hintText: 'Please select expense',),
isEmpty: _constitutions == '',
child: DropdownButtonHideUnderline(
child: DropdownButton<String>(
value: _constitutions,
isDense: true,
onChanged: (String newValue) {
setState(() {
_constitutions = newValue;
state.didChange(newValue);
});
},
items: _constitution.map((String value) {
return DropdownMenuItem<String>(
value: value,
child: Text(value,style: GoogleFonts.lato(fontSize: 1.6*SizeConfig.textMultiplier,)),
);
}).toList(),
),
),
);
},
),
),
Padding(
padding:EdgeInsets.only(left:6.0*SizeConfig.widthMultiplier,right: 6.0*SizeConfig.widthMultiplier,top:1.8*SizeConfig.widthMultiplier,bottom: 1.8*SizeConfig.widthMultiplier),
child: new TextFormField(
validator: (String value) {
if (value.isEmpty) {
return 'Line of Activity is required';
} else {
return null;
}
},
keyboardType: TextInputType.text,
controller: _lineActicity,
// selectionColor:Color(0xffe4065f),
style: GoogleFonts.lato(fontSize: 1.6*SizeConfig.textMultiplier,),
decoration: const InputDecoration(
labelText: "Line of Activity",
labelStyle: TextStyle(color: Color(0xffe4065f)),
focusColor: Color(0xffe4065f),
hintText:
"Line of Activity",
hintStyle: TextStyle(fontSize: 13.0),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(
color: Color(0xffe4065f))),
),
// style: Theme.of(context).textTheme.body1,
),
),
Padding(
padding:EdgeInsets.only(
left: 1.0*SizeConfig.widthMultiplier,
right: 1.0*SizeConfig.widthMultiplier,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.end,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
FlatButton(
onPressed: () {
//x _postData();
if (!_formKey.currentState.validate()) {
//_formKey.currentState.save();
if (_constitutions == null || _districtSelectedValue == null) {
print("eroore");
Flushbar(
message: "please select required fields",
duration: Duration(seconds: 3),
)..show(context);
} else {
// Every of the data in the form are valid at this point
_formKey.currentState.save();
print(_constitutions);
}
} else {
// submitOtp();
_postData();
}
},
child: Text(
"SAVE & NEXT",
style: GoogleFonts.lato(color: Colors.white),
),
color: Color(0xffe4065f),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8.0),
side: BorderSide(color: Color(0xffe4065f)),
),
),
],
),
),
],
),
),
// SizedBox(height: 1000,),
],
)
);
here ,when we add Sizedbox after form with fixedheight then it is scrolling but i dont need fixed height for scrollview im new to flutter please help
You can wrap your main widget with the SingleChildScrollView widget
I would suggest a simple widget hierarchy like
Scaffold
- Container (For the red background)
- Column
- Container (with size for the lorem ipsom text.
- Lorem Ipso Text.
- Expanded (So that it will use the rest of the height automatically.)
- Container (with white back ground and top rounded borders. Makes sure you add circular borders only to top and not to bottom of this container.
- DefaultTabController
- builder (to get different context of the default tab controller if more than one is used in your full app.)
- Column
- TabBar (if the number of categories is large use scrolling here as a property of the tab bar.) wrap in container if you need specific height of the tab bar.
- Expanded
- TabBarView to show the appropriate form.
- SingleChildScrollView
-Column
-Your fields
your list view is wrapper in a container that is very long and has no scroll on it. So it wont scroll as the list fits within that long container.
With list views you want a fixed height. It is the fixed height that is given for the visible parts of the list. Remove the wrapping container or reduce the height so all of it is visible on screen.
Also look at your use of the stack. You might have issues once you fix this with the list scrolling on top of the text "Firm Details" etc.
I have created my own custom textinputfield, everything do has come up well but the thing is how to give that a validator upon the button click?
This is my custom inputfield,
class CustomInputField extends StatelessWidget {
bool _validate = false;
Icon fieldIcon;
String hintText;
TextInputType textType;
CustomInputField(this.fieldIcon, this.hintText, this.textType);
#override
Widget build(BuildContext context) {
return Container(
width: 300,
child: Material(
elevation: 5.0,
borderRadius: BorderRadius.all(Radius.circular(10.0)),
color: Colors.deepOrange,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(12.0),
child: fieldIcon,
),
Container(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.only(topRight: Radius.circular(10.0), bottomRight: Radius.circular(10.0)),
),
width: 250,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: TextField(
controller: _text,
decoration: InputDecoration(
border: InputBorder.none,
hintText: hintText,
fillColor: Colors.white,
errorText: _validate? 'Value can\'t be empty' : null,
filled: true,
),
keyboardType: textType,
style: TextStyle(
fontSize: 15.0,
color: Colors.black,
),
),
),
),
],
)
),
);
}
}
And this is how I'm calling that in different pages
CustomInputField(
Icon(
Icons.lock,
color: Colors.white,
),
'Password',
TextInputType.visiblePassword),
So upon click of the button if the text field is empty, i need to give in the errorText, so could anyone help me out?
You need to do a couple of things.
Create a GlobalKey type FormState for your Stateful Widget.
GlobalKey<FormState> _formKey = GlobalKey<FormState>();
Create a TextFormField with a validator and onSave callback.
Form(
key: _formKey, //Give you form it's key.
child: Column(
children: <Widget>[
TextFormField(
validator: (input) {
if (input.isEmpty) { //Here I check if the field data is empty.
return "Field cannot be empty.;
}
},
//Update what ever variable you want with the validated data.
//Here I picked a variable named foo.
onSaved: (input) => foo = input,
],
),
),
Make a button that uses the _formKey to call the validate function and save function.
RaisedButton(
child: Text("Do Something"),
onPressed: () {
//Validate will run on the TextFormField and return the error provided.
if (_formKey.currentState.validate()) {
_formKey.currentState.save(); //If validated, we will update our foo variable.
}
},
),
When the error message shows up, it reduces the height of the TextFormField. If I understood correctly, that's because the height of the error message is taking into account in the height specified.
Here's a screen before :
and after :
Tried to put conterText: ' ' to the BoxDecoration (as I've seen on another topic) but it didn't help.
An idea ?
EDIT : OMG completly forgot to put the code, here it is :
return Form(
key: _formKey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Container(
height: 40.0,
child: _createTextFormField(loginEmailController, Icons.alternate_email, "Email Adress", false, TextInputType.emailAddress),
),
Container(
height: 40.0,
child: _createTextFormField(loginPasswordController, Icons.lock, "Password", true, TextInputType.text),
),
SizedBox(
width: double.infinity,
child: loginButton
)
],
),
);
}
Widget _createTextFormField(TextEditingController controller, IconData icon, String hintText, bool obscureText, TextInputType inputType){
return TextFormField(
keyboardType: inputType,
controller: controller,
obscureText: obscureText,
/* style: TextStyle(
fontSize: 15.0,
), */
decoration: InputDecoration(
/* contentPadding:
EdgeInsets.symmetric(vertical: 5.0, horizontal: 8.0), */
border: OutlineInputBorder(borderRadius: BorderRadius.circular(5.0)),
icon: Icon(
icon,
color: Colors.black,
size: 22.0,
),
//hintText: hintText,
labelText: hintText,
),
validator: (value) {
if (value.isEmpty) {
return 'Enter some text';
}
return null;
},
);
}
In your Code - you need to comment out the 40 height given to each container.
Container(
// height: 40.0,
child: _createTextFormField(
loginEmailController,
Icons.alternate_email,
"Email Adress",
false,
TextInputType.emailAddress),
),
Container(
// height: 40.0,
child: _createTextFormField(loginPasswordController, Icons.lock,
"Password", true, TextInputType.text),
),
and then in your - TextFormField in InputDecoration, you can alter these value as per your liking.
contentPadding:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 10.0),
Above solutions did not work for me however I have figured out a very simple solution to avoid the above issue
TextFormField(
decoration: InputDecoration(
**errorStyle: const TextStyle(fontSize: 0.01),**
errorBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(borderRadius),
borderSide: const BorderSide(
color: AppColor.neonRed,
width: LayoutConstants.dimen_1,
style: BorderStyle.solid,
),
),
);
Catch in the above solution is that we are setting the size of the error message to 0.01 so as a result it don't show up.
Additionally we can have custom border for the error.
Note : Setting the Text size to 0 is not working as it don't consider the text size and textFormField widget gets shrinked.
The problem is that we are not able to see your code so it might be challenging to assist you but I will do everything from scratch. You can firstly create the authentication class in one dart file
class AuthBloc{
StreamController _passController = new StreamController();
Stream get passStream => _passController.stream;
bool isValid(String pass){
_passController.sink.add("");
if(pass == null || pass.length < 6){
_passController.sink.addError("Password is too short");
return false;
}
else{
return true;
}
}
void dispose(){
_passController.close();
}
}
And then insert the following code in another dart file...
class LoginPage extends StatefulWidget{
#override
_LoginPageState createState() => _LoginPageState();
}
class _LoginPageState extends State<LoginPage>{
AuthBloc authBloc = new AuthBloc();
#override
void dispose(){
authBloc.dispose();
}
#override
Widget build(BuildContext context){
return Scaffold(
body: Container(
padding: EdgeInsets.fromLTRB(30, 0, 30, 0),
constraints: BoxConstraints.expand(),
children: <Widget>[
Padding(
padding: const EdgeInsets.fromLTRB(0, 40, 0, 20),
child: StreamBuilder(
stream: authBloc.passStream,
builder: (context, snapshot) => TextField(
controller: _passController,
style: TextStyle(fontSize: 18, color: Colors.black),
decoration: InputDecoration(
errorText: snapshot.hasError ? snapshot.error:null,
labelText: "Password",
prefixIcon: Container(
width: 50,
child: Icon(Icons.lock),
),
border: OutlineInputBorder(
borderSide: BorderSide(color: Color(0xffCED802), width: 1),
borderRadius: BorderRadius.all(Radius.circular(6))
)
),
),
)
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 30, 0, 40),
child: SizedBox(
width: double.infinity,
height: 52,
child: RaisedButton(
onPressed: _onLoginClicked,
child: Text(
"Login",
style: TextStyle(fontSize: 18, color: Colors.white),
),
color: Color(0xff327708),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(6))
),
),
),
),
]
)
)
}
_onLoginClicked(){
var isValid = authBloc.isValid(_passController.text);
if(isValid){
//insert your action
}
}
}
I hope it works :)
Instead of using a fixed height container to wrap the textFormField, You can try to put a space in the helper text so it will keep the height of the field constant while only displaying when there is an error.
return TextFormField(
// ...
decoration: InputDecoration(
// ...
helperText: " ",
helperStyle: <Your errorStyle>,
)
According to Flutter Doc :
To create a field whose height is fixed regardless of whether or not an error is displayed, either wrap the TextFormField in a fixed height parent like SizedBox, or set the InputDecoration.helperText parameter to a space.
The problem with content padding is that you cant decrease the size of the field to UI requirement with an emphasize on decrease but how ever the second answer helped me come with a solution for my perticular problem, so am sharing that
StreamBuilder(
stream: viewModel.outEmailError,
builder: (context, snap) {
return Container(
width: MediaQuery.of(context).size.width*.7,
height: (snap.hasData)?55:35,
child: AccountTextFormField(
"E-mail",
textInputType: TextInputType.emailAddress,
focusNode: viewModel.emailFocus,
controller: viewModel.emailController,
errorText: snap.data,
textCapitalization: TextCapitalization.none,
onFieldSubmitted: (_) {
nextFocus(viewModel.emailFocus,
viewModel.passwordFocus, context);
},
),
);
}),
I have a Row that has 3 fields in it: 2 TextFields, 1 DropdownButtonHideUnderline wrapped in a Container. I'm trying to ensure that the first TextField takes up about 50-60% and the other two fields share the remaining space. I also want the fields to have the same height. So, something like this:
This is the code I have:
#override
Widget build(BuildContext context) {
return Container(
color: Theme.of(context).accentColor,
child: Padding(
padding: const EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),
child: Row(children: <Widget>[
Expanded(
child: Container(
padding: EdgeInsets.only(right: 5.0),
child: TypeAheadField(
textFieldConfiguration: TextFieldConfiguration(
autofocus: true,
controller: widget.ingredientController,
style: DefaultTextStyle.of(context)
.style
.copyWith(fontStyle: FontStyle.italic),
decoration: InputDecoration(
border: InputBorder.none,
filled: true,
fillColor: Colors.white.withOpacity(1),
hintText: 'Ingredient',
suffixIcon: GestureDetector(
onTap: widget.addFunction,
child: Icon(
Icons.add,
color: Colors.grey,
)))),
suggestionsCallback: (pattern) async {
return await _findIngredients(pattern);
},
//If not items are found, return an empty container.
noItemsFoundBuilder: (context) {
return Container(height: 0, width: 0);
},
itemBuilder: (context, suggestion) {
return ListTile(
title: Text(suggestion.name),
);
},
onSuggestionSelected: (Ingredient suggestion) {
widget.ingredientController.text = suggestion.name;
},
))),
Expanded(
child: TextField(
maxLines: 1,
controller: widget.quantityController,
keyboardType: TextInputType.text,
autofocus: false,
decoration: InputDecoration(
border: InputBorder.none,
filled: true,
fillColor: Colors.white.withOpacity(1),
hintText: 'Qty',
))),
Expanded(flex: 1, child: UnitDropdown()),
])));
}
What I'm left with is this:
I've tried setting the flex factor on the Expanded to different things, but that just results in an overflow on the right side. I've also not found a way to force all of the widgets to have the same height.
Try this one,
Row(children : <Widget>[
Expanded(
Container(child: TextField1())
),
Expanded(
Row(children : <Widget>[
Expanded(child: TextFiled2()),
Expanded(child: DropDown())
]);
)
]);
Or else, You can use MediaQuery to get the exact size of the screen.
Example:
Width : MediaQuery.of(context).size.width * 0.5;
Width : MediaQuery.of(context).size.width * 0.25;
Width : MediaQuery.of(context).size.width * 0.25;
Here you have, the key is to encapsulate the TextField, Dropdown, or whatever component you have in a Container, and define the actual size from the Container, tweaking the predefined internal Paddings of each widget (if you have the chance, sometimes is not available).
double itemsHeight = 30;
Widget getTextField({String hint = 'Ingredients', Widget suffix}) {
// use Container to define the size of the child,
// and reset the original inner paddings!
return Container(
height: itemsHeight,
child: TextField(
decoration: InputDecoration(
border: OutlineInputBorder(
borderRadius: BorderRadius.zero,
borderSide: BorderSide(color: Colors.white, width: 1)),
hintText: hint,
contentPadding: EdgeInsets.all(
0), // change each value, and set 0 remainding ones.
suffixIcon: suffix,
),
expands: false,
maxLines: 1,
controller: TextEditingController(),
),
);
}
return Scaffold(
body: Container(
color: Colors.green.withOpacity(.2),
margin: EdgeInsets.symmetric(vertical: 50, horizontal: 20),
child: Row(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Flexible(
flex: 2,
child: getTextField(
hint: 'Ingredients',
suffix: Icon(
Icons.add,
size:
18, // option 1: reduce the size of the icon, and avoid the padding issues..
)),
),
Flexible(
flex: 1,
child: getTextField(
hint: 'Qty',
// option2: trick to match the expanded height of the icon on the previous field
// make an icon transparent :)
suffix: Icon(
Icons.account_box,
color: Colors.transparent,
)),
),
Flexible(
flex: 1,
child: Container(
// use this to match the Flex size..., is like using Expanded.
width: double.infinity,
// container defines the BoxConstrains of the children
decoration: BoxDecoration(
color: Colors.white24,
border: Border.all(color: Colors.white, width: 1),
),
height: itemsHeight,
child: DropdownButton(
hint: Text("Unit"),
onChanged: (i) {},
underline: Container(),
items: List.generate(5, (i) {
return DropdownMenuItem(child: Text("item $i"));
})),
),
),
],
),
),
);
screenshot of result: