I'm a new flutter user, here I'm learning how to create an attractive display. One of them is I want to add a paginated page to the listview, how do I add the paginated page? I have tried to make like using datatable but can't and error occurs. with the source code that I have I hope my friends can help me. thank you very much good friend
sample image i want
display the program that I have
Source Code :
Widget nasabahListView(List<Nasabah> listnasabah) {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (context, index) {
Nasabah nasabah = listnasabah[index];
return Padding(
padding: const EdgeInsets.only(top: 8.0),
child: Card(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
nasabah.nama_debitur,
style: Theme.of(context).textTheme.bodyText1,
),
Text(nasabah.alamat),
Text(nasabah.no_ktp),
Text(nasabah.no_telp),
Text(nasabah.no_selular),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
FlatButton(
onPressed: () {
apiService
.deleteNasabah(nasabah.id)
.whenComplete(() {
Alert(
context: context,
type: AlertType.success,
title: "Sukses",
desc: "Data berhasil dihapus",
buttons: [
DialogButton(
child: Text(
"OK",
style: TextStyle(
color: Colors.white, fontSize: 20),
),
onPressed: () {
Navigator.pop(context);
},
width: 120,
)
],
).show();
});
},
child: Text(
"Hapus",
style: TextStyle(color: Colors.red),
),
),
TextButton(
onPressed: () async {
var result = await Navigator.push(context,
MaterialPageRoute(builder: (context) {
return FormAddNasabah(nasabah: nasabah);
}));
},
child: Text(
'Edit',
style: TextStyle(color: Colors.blue),
),
),
],
)
],
),
),
),
);
},
itemCount: listnasabah.length,
),
);
}
Related
I have a problem with ListView. I need to make it scrollable and set its size to max space it can take. Below listView I have a button that should be visible, but the ListView covers it.
I tried solutions from similar topics:
put ListView into SingleChildScrollView
make ListView Expanded
So the problem is:
how to make this listView scrollable?
how can I set its size to max as it can take (I mean it should be between 'List of participants' and Leave button)
how can I attach this button to be always on the bottom of screen, no matter what size of screen I have?
I hope pictures help you to understand what I mean. I also add the code but it is formatted weird, so sorry about that.
Screenshoot from device with above problem:
How it looks on another device and how it should look:
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomInset: false,
appBar: AppBar(
title: const Text('Flutter SDK'),
centerTitle: true),
body: Padding(
padding: const EdgeInsets.all(16),
child: !isInitializedList
? Column(
children: [
TextField(
controller: usernameController,
readOnly: true),
const SizedBox(height: 12),
TextField(
decoration: const InputDecoration(hintText: 'Conference name'),
controller: conferenceNameController),
const SizedBox(height: 12),
ElevatedButton(
onPressed: () async {
// Step 5: Call joinConference()
await joinConference();
},
child: isJoining
? const Text('Joining...')
: const Text('Join the conference')),
const Divider(thickness: 2),
const Text("Join the conference to see the list of participants.")
],
)
: Column(
children: [
Text(
'Conference name: ${conferenceNameController.text}',
style: const TextStyle(fontWeight: FontWeight.w400, fontSize: 16)),
const SizedBox(height: 16),
Column(
children: [
const Align(
alignment: Alignment.centerLeft,
child: Text(
'List of participants:',
style: TextStyle(color: Colors.blue, fontWeight: FontWeight.w600))),
const SizedBox(height: 16),
// Step 7: Display the list of participants
ListView.separated(
separatorBuilder: (BuildContext context, int index) {
return const SizedBox(height: 5);
},
shrinkWrap: true,
itemCount: participants.length,
itemBuilder: (context, index) {
var participant = participants[index];
return Padding(
padding: const EdgeInsets.all(4),
child: Row(children: [
Expanded(
flex: 1,
child: SizedBox(
height: 150,
width: 150,
child: VideoView.withMediaStream(
participant: participant,
mediaStream: participant.streams?.firstWhereOrNull((s) =>
s.type == MediaStreamType.camera),
key: ValueKey('video_view_tile_${participant.id}'))),
),
Expanded(
flex: 1,
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Column(
mainAxisAlignment:
MainAxisAlignment.center,
children: [
Text(
"${participant.info?.name.toString()}"),
Text(
"status: ${participant.status?.name}")
]),
),
)
]),
);
}),
]),
const SizedBox(height: 16),
ElevatedButton(
style: ElevatedButton.styleFrom(primary: Colors.red),
onPressed: () async {
// Step 6: Call leaveConference()
await leaveConference();
},
child: isJoining
? const Text('Leaving...')
: const Text('Leave the conference'))
])
)
);
}
When you want to make list view expand as much as available, you need to wrap it with Expanded widget, by that you tell to column give it space as much as you have, also you need to do this for inside column agin, like this:
Column(
children: [
Text('Conference name: ${conferenceNameController.text}',
style: const TextStyle(fontWeight: FontWeight.w400, fontSize: 16)),
const SizedBox(height: 16),
Expanded(// <--- add this
child: Column(
children: [
const Align(
alignment: Alignment.centerLeft,
child: Text('List of participants:',
style: TextStyle(
color: Colors.blue,
fontWeight: FontWeight.w600))),
const SizedBox(height: 16),
Expanded( // <--- add this
child: ListView.separated(
separatorBuilder:
...
)
You can make listview scrollable with shrinkwrap parameter inside Listview.builder()
I'm trying to make posts like on Twitter, where every post is a single separated item, but they all go like big single card, without separating. I'm kinda new with Flutter and bad at explanations, but I hope u got it.
#override
Widget build(BuildContext context) {
return Scaffold(
floatingActionButton: FloatingActionButton(
onPressed: _writePost,
tooltip: 'Increment',
child: Icon(Icons.create, color: Colors.grey[300]),
),
body: SizedBox(
height: 500,
child:
StreamBuilder<List<Post>>(
initialData: const [],
stream: _socketStream.stream,
builder: (context, snapshot) {
if (_isLoading) {
return const Center(
child: CircularProgressIndicator(),
);
}
return Card(child: ListView(
scrollDirection: Axis.vertical,
shrinkWrap: true,
children: [
...snapshot.data!.map<Widget>(
(post) => Padding(
key: ValueKey(post.id),
padding: const EdgeInsets.symmetric(vertical: 10),
child: ListTile(
title: Text(
post.content,
style: const TextStyle(fontSize: 20),
),
trailing: MaterialButton(
onPressed: () {
_deletePost(post.id);
},
child: const Icon(
Icons.delete,
size: 30,
),
),
),
),
)
],
) );
},
),
));
}
Example of how it looks:
I'm tried to find error with documentation, but...
Write if u need some more code or explanations.
Please help me if you can <3
You need to add each of the mapped item of your data with Card instead of your parent ListView. Something like this:
return ListView(
scrollDirection: Axis.vertical,
shrinkWrap: true,
children: [
...snapshot.data!.map<Widget>(
(post) => Padding(
key: ValueKey(post.id),
padding: const EdgeInsets.symmetric(vertical: 10),
child:
// Use card here.
Card(child: ListTile(
title: Text(
post.content,
style: const TextStyle(fontSize: 20),
),
trailing: MaterialButton(
onPressed: () {
_deletePost(post.id);
},
child: const Icon(
Icons.delete,
size: 30,
),
),
),
),
),
)
],
);
You can try ListView.separated
Try:
List.generate(lentgh, (index) {
return Text("$index"); // custom widget
}),
I currently have a listview with an alphabet scroller on the side. I'm trying to add a searchbox to the top, but whenever I wrap something in a column, I get errors.
Using the current code, ListView inside Stack is throwing Vertical viewport was given unbounded height.
When I remove the column and Text('TestString'), my code works fine. I have tried adding an Expandable around the ListView.Builder but this also doesn't seem to solve it.
#override
Widget build(BuildContext context) {
height = MediaQuery.of(context).size.height;
return Scaffold(
appBar: AppBar(
title: Text(widget.title,
style: TextStyle(
fontSize: 20.0,
color: Colors.white,
fontWeight: FontWeight.bold)),
centerTitle: true,
),
body: Column(
children: [
Text('TestString'),
new LayoutBuilder(
builder: (context, constraints) {
return new Stack(children: [
//Causes the current issue
ListView.builder(
itemCount: exampleList.length,
controller: _controller,
itemExtent: _itemsizeheight,
itemBuilder: (context, position) {
return Padding(
padding: const EdgeInsets.only(right: 32.0),
child: Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Text(
exampleList[position],
style: TextStyle(fontSize: 20.0),
),
),
));
},
),
Positioned(
right: _marginRight,
top: _offsetContainer,
child: _getSpeechBubble()),
Align(
alignment: Alignment.centerRight,
child: GestureDetector(
onTapDown: (details) {
_onTapDown(details);
},
child: GestureDetector(
onVerticalDragUpdate: _onVerticalDragUpdate,
onVerticalDragStart: _onVerticalDragStart,
onVerticalDragEnd: (details) {
setState(() {
isPressed = false;
});
},
child: Container(
//height: 20.0 * 26,
color: Colors.transparent,
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
children: []..addAll(
new List.generate(_alphabet.length,
(index) => _getAlphabetItem(index)),
),
),
),
),
),
),
]);
},
),
],
),
);
}
_getSpeechBubble() {
return isPressed
? new SpeechBubble(
nipLocation: NipLocation.RIGHT,
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
width: 30,
child: Center(
child: Text(
"${_text ?? "${_alphabet.first}"}",
style: TextStyle(
color: Colors.white,
fontSize: 18.0,
),
),
),
),
],
),
)
: SizedBox.shrink();
}
ValueGetter? callback(int value) {}
_getAlphabetItem(int index) {
return new Expanded(
child: new Container(
width: 40,
height: 20,
alignment: Alignment.center,
child: new Text(
_alphabet[index],
style: (index == posSelected)
? new TextStyle(fontSize: 16, fontWeight: FontWeight.w700)
: new TextStyle(fontSize: 12, fontWeight: FontWeight.w400),
),
),
);
}
You can wrap your LayoutBuilder() with Expanded() like this and it won't show an error.
return Container(
child: Column(
children: [
Text("Header"),
Expanded(
child: ListView.builder(
itemCount:50,
itemBuilder: (BuildContext context, int index) {
return Text("List Item $index");
},
),
),
Text("Footer"),
],
),
);
You can try the code here
so I have a list of users that is in a Listview.builder widget but my issue is that when I try to update one item on the list all the other items update as well.
I have a button that shows "Add friend" when I click on the button the message should change to "Invited", I have a string variable that holds the message so when I click on the button the string is updated from "Add friend" to "Invited", now when I click on button all the other button values change as well.
Here is my code:
class Friends extends StatefulWidget{
_FriendsState createState() => _FriendsState();
}
class _FriendsState extends State<Friends>{
List<String> nameList = [];
String btnText;
#override
Widget build(BuildContext context) {
bool showFriendList = false;
return Scaffold(
appBar: AppBar(
title: Text('Friends'),
actions: <Widget>[
IconButton(
onPressed: (){
},
icon: Icon(Icons.check, color: Colors.white,),
)
],
),
body:
Padding(
padding: EdgeInsets.all(10),
child: ListView(
children: <Widget>[
showFriendList? Column(
children: <Widget>[
Text('Find friends to add. Once they accept you can invite them to your challenge.', style: TextStyle(fontWeight: FontWeight.w500, fontSize: 16),),
SizedBox(height: 45,),
Container(
width: MediaQuery.of(context).size.width,
child: RaisedButton(
child: Text('GO AND FIND FRIENDS', style: TextStyle(fontWeight: FontWeight.w500, fontSize: 14, color: Colors.white)),
onPressed: (){
setState(() {
showFriendList != showFriendList;
});
},
color: Theme.of(context).accentColor,
shape: RoundedRectangleBorder(side: BorderSide(color: Theme.of(context).accentColor),borderRadius: BorderRadius.circular(14)),
),
)
],
): Container(
height: MediaQuery.of(context).size.height,
child:friends(context) ,
)
],
) ,
)
);
}
Widget friends(BuildContext context){
return
ListView(
children: <Widget>[
Container(
margin: EdgeInsets.all(8),
padding: EdgeInsets.all(8),
decoration: BoxDecoration(
color: Colors.white
),
child: TextField(
decoration:InputDecoration(
hintText: 'Enter User\'s name',
border: InputBorder.none,),
),
),
/* noRequest== true? SizedBox(height: 0,):friendRequest(context),
noRequest== true? SizedBox(height: 0,): Container(
margin: EdgeInsets.all(10),
height: 60,
child: Column(mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment:CrossAxisAlignment.start,
children: <Widget>[Text('Your friends', style: TextStyle(fontSize: 16, color: Theme.of(context).textSelectionColor,)) ],),
),*/
Container(
height: 0.5,
color: Colors.grey,
),
ListView.builder(
shrinkWrap: true,
itemCount: users.length,
itemBuilder: (BuildContext context, int index){
return
Container(
padding: EdgeInsets.only(left: 6),
height:80 ,
child:
Column(
children: <Widget>[
Row(
children: <Widget>[
users[index].profileUrl != null? CircleAvatar(child: Image.asset(users[index].profileUrl),): Container(
width: 50,
height: 50,
decoration: BoxDecoration(
color: Colors.white70,
shape: BoxShape.circle,
image: DecorationImage(
image:AssetImage('assets/plus.png') //NetworkImage(renderUrl ??'assets/img.png')
)
),
),
SizedBox(width: 30,),
Expanded(
flex: 1,
child:
Container(
child:
Row(
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
SizedBox(height: 12,),
users[index].fullName != null? Text( users[index].fullName, style: TextStyle(fontSize: 18)): Text('Anjelika Thompson', style: TextStyle(fontSize: 18),),
SizedBox(height: 12,),
Row(
//crossAxisAlignment: CrossAxisAlignment.start,
// mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(child: Icon(Icons.location_on),alignment: Alignment.topLeft,),
SizedBox(width: 10,),
users[index].distance_KM.toString() != null ? Text( users[index].distance_KM.toString()):Text('48.7 km')
]),
],
),
],
)
),
),
SizedBox(width: 0,),
//Icon(Icons.check,color: Colors.red,size: 40,)
FlatButton(
child: Text(btnText==null? 'ADD FRIEND': btnText, style: TextStyle(color: Color(0xff7667e5)),),
onPressed: () {
nameList.add(users[index].fullName);
setState(() {
btnText = 'INVITED';
});
},
)
],
),
Container(
height: 0.5,
color: Colors.grey,
)
],
) ,
);
}
// final item = feeds[index];
)
],
);
}
}
From my class, I have a string value called "btnText" that I use to set the new value. but at the moment once I click on one button to change from "Add friend" to "Invited" all other button Text in the listview change as well.
Please I need help figuring out what is the problem
#Chidinma, you can add a check to see if user is in your nameList,
FlatButton(
child: Text(btnText==null || !nameList.contains(users[index].fullName) ? 'ADD FRIEND': btnText, style: TextStyle(color: Color(0xff7667e5)),),
onPressed: () {
nameList.add(users[index].fullName);
setState(() {
btnText = 'INVITED';
});
................
This is just to give you an idea. A better solution would be to create a selected column in users table and save selected state as bool value. If you don't have database then i'd recommend creating indexList like nameList and save the index of invited friends and check to see if index is in the indexList like i've done with the nameList instead.
Method
inviteButtonStateFunction(index){
for (var e in invitedPeopleListIndex) {
if(e == index){
return Text("Invited");
}
}
return Text("Invite");
}
Usage
child: TextButton(
onPressed: () {
if(invitedPeopleListIndex.contains(index)){
invitedPeopleListIndex.remove(index);
}else{
invitedPeopleListIndex.add(index);
}
print(invitedPeopleListIndex);
print(invitedPeopleList);
},
child: inviteButtonStateFunction(index), // Show the text here
)
I'm just new to android programming. and now I have a problem in flutter / dart. So, I have a list of cards that has data showing in it, and that data is coming from the firestore database, and in the card there's also a button named "view". So I want to do is, If I click the "view" button it will show a dialog with the details of the card that I clicked. Im having a problem in getting the details and show it in a dialog. Please help :(
Here is my UI:
My UI
Here is my code when retrieving the data Im using a stream builder:
StreamBuilder<QuerySnapshot>(
stream: db.collection('HELP REQUEST').snapshots(),
builder: (context, snapshot) {
if (snapshot.hasData) {
return Column(
children: snapshot.data.documents
.map((doc) => buildItem(doc))
.toList());
} else {
return SizedBox();
}
})
and Here I put the data in a card and output it:
return Card(
elevation: 5,
child: Padding(
padding: const EdgeInsets.all(8),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
'Name of Requestor: ${doc.data['Name_ofUser']}',
style: TextStyle(fontSize: 20),
),
Text(
'Help description: ${doc.data['Help_Description']}',
style: TextStyle(fontSize: 20),
),
Text(
'Type of help needed: ${doc.data['Help_TypeNeeded']}',
style: TextStyle(fontSize: 20),
),
Text(
'Help location: ${doc.data['Help_Location']}',
style: TextStyle(fontSize: 20),
),
SizedBox(
height: 12,
),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
FlatButton(
onPressed: () {},
child: Text('View'),
)
],
),
],
),
),
);
Please help :(
Let's say you have a list of Card called list
you can use #mertcan answer to display a dialog like this.
return Card(
elevation: 5,
child: Padding(
padding: const EdgeInsets.all(8),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
'Name of Requestor: ${doc.data['Name_ofUser']}',
style: TextStyle(fontSize: 20),
),
Text(
'Help description: ${doc.data['Help_Description']}',
style: TextStyle(fontSize: 20),
),
Text(
'Type of help needed: ${Text('Help description: $help')}',
style: TextStyle(fontSize: 20),
),
Text(
'Help location: ${doc.data['Help_Location']}',
style: TextStyle(fontSize: 20),
),
SizedBox(
height: 12,
),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
FlatButton(
onPressed: () {
//Note change here
_showMydialog(doc.data)
},
child: Text('View'),
)
],
),
],
),
),
)
void _showMydialog(dynamic data){
showDialog<void>(
context: context,
builder: (context) {
return SimpleDialog(
children: [
Text(Name of Requestor: ${data['Name_ofUser']),
Text('Help description: ${doc.data['Help_Description'])
],
);
},
);
}
There is a built-in function in flutter called showDialog and various dialog widgets that you can use according to your need(https://api.flutter.dev/flutter/material/Dialog-class.html). So it needs to look something like this
showDialog<void>(
context: context,
builder: (context) {
return SimpleDialog(
children: [
Text('Name of requester: $name'),
Text('Help description: $help')
],
);
},
);
Your View button click should call this function.