SQFLite DataBase Not Created - flutter

Question

I have tried everything I know But Not been able to solve the issue
RUN Output :
Launching lib\main.dart on moto g 40 fusion in debug mode...
Running Gradle task 'assembleDebug'...
√ Built build\app\outputs\flutter-apk\app-debug.apk.
D/FlutterLocationService(30742): Creating service.
D/FlutterLocationService(30742): Binding to location service.
Debug service listening on ws://127.0.0.1:51746/KGrWp8utBGI=/ws
Syncing files to device moto g 40 fusion...
E/SQLiteLog(30742): (1) no such table: placestore in "SELECT * FROM placestore"
I/AssistStructure(30742): Flattened final assist data: 396 bytes, containing 1 windows, 3 views
D/MediaScannerConnection(30742): Scanned /data/user/0/com.example.memory_place/cache/04c048c7-d58f-497c-b050-fb56e943fc1b615751689670497232.mp4 to null
D/ThumbnailPlugin(30742): original w:1080, h:1920 => 150, 267
E/flutter (30742): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: FileSystemException: Cannot copy file to '/data/user/0/com.example.memory_place/app_flutter/�$��� 5�5f��O ���
======== Exception caught by gesture ===============================================================
The following LateError was thrown while handling a gesture:
LateInitializationError: Field '_CurrentThumbnail#643317077' has not been initialized.
When the exception was thrown, this was the stack:
#0 AddScreen._CurrentThumbnail (package:memory_place/Screens/add_places_screen.dart)
#1 AddScreen.build.SafePlace (package:memory_place/Screens/add_places_screen.dart:25:47)
#2 AddScreen.build. (package:memory_place/Screens/add_places_screen.dart:64:15)
#3 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:989:21)
#4 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:198:24)
#5 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:608:11)
#6 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:296:5)
#7 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:230:7)
#8 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:563:9)
#9 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:94:12)
#10 PointerRouter._dispatchEventToRoutes. (package:flutter/src/gestures/pointer_router.dart:139:9)
#11 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:539:8)
#12 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:137:18)
#13 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:123:7)
#14 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
#15 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
#16 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:322:11)
#17 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
#18 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
#19 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
#20 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
#24 _invoke1 (dart:ui/hooks.dart:170:10)
#25 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:331:7)
#26 _dispatchPointerDataPacket (dart:ui/hooks.dart:94:31)
(elided 3 frames from dart:async)
Handler: "onTap"
Recognizer: TapGestureRecognizer#12cd2
debugOwner: GestureDetector
state: possible
won arena
finalPosition: Offset(239.2, 911.2)
finalLocalPosition: Offset(239.2, 11.2)
button: 1
sent tap down
DB HELPER FILE:
import 'package:sqflite/sqflite.dart' as sql;
import 'package:path/path.dart' as p;
class dbHelper{
static Future<sql.Database> DataBase() async{
return sql.openDatabase(p.join(await sql.getDatabasesPath(),'memory_place.db'),
onCreate: (db, version) async{
return await db.execute('CREATE TABLE placestore(id TEXT PRIMARY KEY, title TEXT, video TEXT, thumbnail TEXT)');
},version: 1);
}
static Future<void> insert(String Table,Map<String,Object> data) async{
final db = await dbHelper.DataBase();
db.insert(
Table,
data,
conflictAlgorithm: sql.ConflictAlgorithm.replace);
}
static Future<List<Map<String,dynamic>>> getData(String table) async{
final db = await dbHelper.DataBase();
return db.query(table);
}
}
IMAGE INPUT PAGE :
import 'dart:async';
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path_provider/path_provider.dart' as syspath;
import 'package:path/path.dart' as p;
import 'package:video_thumbnail/video_thumbnail.dart';
class ImageInput extends StatefulWidget {
Function onSelected;
ImageInput({required this.onSelected});
#override
State<ImageInput> createState() => _ImageInputState();
}
class _ImageInputState extends State<ImageInput> {
XFile ? _referenceXFileVid;
File? _referenceVidFile;
Future<void> TakePic() async{
final _imagePicker = ImagePicker();
final NewFile = await _imagePicker.pickVideo(
source: ImageSource.camera,
maxDuration: Duration(minutes: 1));
setState(() {
_referenceVidFile = File(NewFile!.path);
_referenceXFileVid = NewFile;
});
}
Future<Uint8List?> VideoThumbNail(XFile Video) async{
final uint8list = await VideoThumbnail.thumbnailData(
video: Video.path,
imageFormat: ImageFormat.JPEG,
maxWidth: 150,
quality: 25,
);
return await uint8list;
}
#override
Widget build(BuildContext context) {
return Row(
children: [
Container(
height: 267,
width: 150,
alignment: Alignment.center,
decoration: BoxDecoration(
border: Border.all(width: 1,color: Colors.grey),
),
child: _referenceVidFile!= null ?
FutureBuilder<Uint8List?>(
future: VideoThumbNail(_referenceXFileVid!),
builder: (context,uint8) {
if(uint8.hasData){
final ImagePath = uint8.data;
final CurrentThumbImg = Image.memory(ImagePath!,
height: 267,
width: 150,
fit: BoxFit.cover,);
SaveVidAndThumb(_referenceVidFile!,File.fromRawPath(ImagePath));
return CurrentThumbImg;
}else{
return Center(child: Text('Saumya Made Mistake',textAlign: TextAlign.center,));
}
}) : Text('No Video Taken',textAlign: TextAlign.center,),
),
SizedBox(width: 10,),
Expanded(
child: FlatButton.icon(onPressed: (){
TakePic();
},
icon: Icon(Icons.camera),
label: Text('Take Video'),
textColor: Theme.of(context).primaryColor,),
),
],
);
}
void SaveVidAndThumb(File Video,File Thumbnail) async{
final appDir = await syspath.getApplicationDocumentsDirectory();
final VideoPath = p.basename(Video.path);
final ThumbPath = p.basename(Thumbnail.path);
final Savedvideo = await Video.copy('${appDir.path}/$VideoPath');
final SavedThumb = await Thumbnail.copy('${appDir.path}/$ThumbPath');
widget.onSelected(Savedvideo,SavedThumb);
}
}
ADD PLACES SCREEN :
import 'dart:io';
import 'package:memory_place/models/Video_format.dart';
import 'package:memory_place/providers/place_provider.dart';
import 'package:memory_place/widgets/Location_Input.dart';
import 'package:provider/provider.dart';
import 'package:flutter/material.dart';
import 'package:memory_place/widgets/Image_Input.dart';
class AddScreen extends StatelessWidget {
TextEditingController _TitleTextController = TextEditingController();
late File _CurrentVideo;
late File _CurrentThumbnail;
void CallCurrentImage(File CurrentVideo,File CurrentThumbnail){
if(CurrentVideo!=null){
_CurrentVideo = CurrentVideo;
_CurrentThumbnail = CurrentThumbnail;
}
}
#override
Widget build(BuildContext context) {
void SafePlace(){
if(_TitleTextController.text == null || _CurrentThumbnail == null){
throw Text('Either Title or Image is Missing');
}else {
Provider.of<PlaceProvider>(context, listen: false).AddPlace(
_TitleTextController.text,
_CurrentVideo,
_CurrentThumbnail);
Navigator.pop(context);
}
}
return Scaffold(
appBar: AppBar(
title: Text('Add Place Screen'),
),
body: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Expanded(
child:SingleChildScrollView(
child: Padding(
padding: EdgeInsets.all(10.0),
child: Column(
children: [
TextField(
decoration: InputDecoration(label: Text('Title...')),
controller: _TitleTextController,
),
SizedBox(height: 20,),
ImageInput(onSelected: CallCurrentImage),
SizedBox(height: 20,),
LocationInput(),
],
),
),
) ),
RaisedButton.icon(
onPressed: (){
SafePlace();
},
icon: Icon(Icons.add),
label: Text('Add Place'),
elevation: 0,
materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
color: Theme.of(context).accentColor,
)
],
),
);
}
}

Answer 1

When you declare a variable as late , you are actually indicating that it won't be null.
In your code, you're declaring_CurrentThumbnail variable as late but not
instantiating it.
You can change your AddScreen widget to StatefulWidget and instantiate _CurrentThumbnail inside initState function.(or even call CallCurrentImage inside initState)