I'm sorry if my question was ambiguous.
I'll slowly explain what I want.
I declared the variables to be used in the app using the provider. This is the code I wrote.
import 'dart:ui';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
class CountPage extends ChangeNotifier {
int _page = 150;
int get page => _page;
bool _visible = false;
bool get visible => _visible;
double _font = 40;
double get font => _font;
TextAlign align = TextAlign.center;
Color selection = Colors.red[200]!;
change_align_left(){
align = TextAlign.left;
notifyListeners();
}
change_align_center(){
align = TextAlign.center;
notifyListeners();
}
change_align_right(){
align = TextAlign.right;
notifyListeners();
}
change_color_1() {
selection = Colors.green[200]!;
notifyListeners();
}
change_color_2() {
selection = Colors.blue[200]!;
notifyListeners();
}
change_color_3() {
selection = Colors.deepOrange[200]!;
notifyListeners();
}
change_color_4() {
selection = Colors.pink[200]!;
notifyListeners();
}
change_color_5() {
selection = Colors.red[200]!;
notifyListeners();
}
change_color_6() {
selection = Colors.brown[200]!;
notifyListeners();
}
change_color_7() {
selection = Colors.deepPurple[200]!;
notifyListeners();
}
change_font_1() async {
_font = 30;
notifyListeners();
}
change_font_2() async {
_font = 35;
notifyListeners();
}
change_font_3() async {
_font = 40;
notifyListeners();
}
copy_on() {
_visible = !_visible;
notifyListeners();
}
page_down() {
if (_page == 0) {
_page = 0;
notifyListeners();
} else {
_page--;
notifyListeners();
}
}
page_up() {
if (_page == 152) {
_page = 152;
notifyListeners();
} else {
_page++;
notifyListeners();
}
}
}
And then I created a button for the user to choose background color, text size, and text alignment, which is part of the code I created.
class _Option_pageState extends State<Option_page> {
#override
Widget build(BuildContext context) {
void initState() {
super.initState();
}
final countPage = Provider.of<CountPage>(context);
CountPage _countPage = Provider.of<CountPage>(context, listen: true);
return Scaffold(
appBar: AppBar(
backgroundColor: countPage.selection,
centerTitle: true,
title: Text("설정"),
),
body: Center(
child: Container(
child: Column(children: [
Text(
"글자 크기 ",
style: TextStyle(
fontSize: countPage.font,
),
),
Container(
height: 50,
child: Row(
children: [
Container(child: Text('글자크기')),
Container(
width: 300,
color: Colors.green[200],
child: Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
IconButton(
onPressed: () {
_countPage.change_font_1();
},
icon: Icon(Icons.looks_one_outlined)),
IconButton(
onPressed: () {
_countPage.change_font_2();
},
icon: Icon(Icons.looks_two_outlined)),
IconButton(
onPressed: () {
_countPage.change_font_3();
},
icon: Icon(Icons.looks_3_outlined)),
],
),
)
],
),
),
Container(
color: _countPage.selection,
height: 50,
child: Row(
children: [
TextButton(onPressed:()
{
Navigator.push(context, MaterialPageRoute(builder: (context) => const Color_choic()));
},
child: Text("색깔변경 "),
style: TextButton.styleFrom(primary: Colors.white),
),
],
),
),
Container(
color: Colors.white,
height: 50,
child: Row(
children: [
Text('글자정렬'),
Container(
width: 300,
color: Colors.lightGreen,
child: Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
IconButton(
onPressed: () {countPage.change_align_left();},
icon: Icon(Icons.format_align_left)),
IconButton(
onPressed: () {countPage.change_align_center();},
icon: Icon(Icons.format_align_center)),
IconButton(
onPressed: () {countPage.change_align_right();},
icon: Icon(Icons.format_align_right)),
],
),
),
),
],
),
),
]),
),
),
);;
}
}
This code changes the font size, background color, and text alignment while the app is running, but when you run the app again, it returns to the first value.
I want to change the size, color, and alignment values when I press the button, and I want the changed values to remain changed even when I run the app again.
I looked up a function called Shared Preference, but I don't know how to apply it to my code.
I'd appreciate it if you could suggest a way to solve my problem.
Don't hesitate to comment on my questioning method or code.
Yes, shared preferences can be a right approach: add the shared_preferences library to pubspec.yaml.
SharedPreferences needs an instance across and a string key to store the value in device storage:
Adding static late SharedPreferences _prefs; to your ChangeNotifier
Adding the instance to the initializer:
static Future init() async {
_prefs = await SharedPreferences.getInstance();
}
So then your getters and setters would be something like this:
double _font = 40; //variable
double get font {
return _prefs.getDouble("prefsFont") ?? _font; //return value of variable when there's nothing on preferences
}
set font(double font) {
_font = font;
_prefs.setDouble("prefsFont", _font); //saving variable to preferences when setting a value
}
If you want to "reset" values you just need to remove it from preferences:
void resetFont {
_prefs.remove("prefsFont");
}
And if you want to remove all preferences:
static void clearAll() async {
_prefs.clear();
}
Full class should look something like this: ( I haven't tested it)
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
class CountPage extends ChangeNotifier {
static late SharedPreferences _prefs;
static const String prefsFont = "prefs_font";
static const String prefsPage = "prefs_page";
static const String prefsVisible = "prefs_visible";
static const String prefsColor = "prefs_color";
static const String prefsAlign = "prefs_align";
int _page = 150;
int get page {
return _prefs.getInt(prefsPage) ?? _page;
}
set page(int page) {
_page = page;
_prefs.setInt(prefsPage, _page);
}
bool _visible = false;
bool get visible {
return _prefs.getBool(prefsFont) ?? _visible;
}
set visible(bool visible) {
_visible = visible;
_prefs.setBool(prefsFont, _visible);
}
double _font = 40;
double get font {
return _prefs.getDouble(prefsFont) ?? _font;
}
set font(double font) {
_font = font;
_prefs.setDouble(prefsFont, _font);
}
TextAlign _align = TextAlign.center;
TextAlign get align {
final alignValue = _prefs.getInt(prefsAlign) ?? _align.index;
switch (alignValue) {
case 0:
return TextAlign.left;
case 1:
return TextAlign.center;
case 2:
return TextAlign.right;
default:
return TextAlign.center;
}
}
set align(TextAlign align) {
_align = align;
_prefs.setInt(prefsAlign, _align.index);
}
Color _selection = Colors.red[200]!;
Color get selection {
Color color = Color(_prefs.getInt(prefsColor) ?? _selection.value);
return color;
}
set selection(Color selection) {
_selection = selection;
_prefs.setInt(prefsColor, _selection.value);
}
static Future init() async {
_prefs = await SharedPreferences.getInstance();
}
change_align_left() {
align = TextAlign.left;
notifyListeners();
}
change_align_center() {
align = TextAlign.center;
notifyListeners();
}
change_align_right() {
align = TextAlign.right;
notifyListeners();
}
change_color_1() {
selection = Colors.green[200]!;
notifyListeners();
}
change_color_2() {
selection = Colors.blue[200]!;
notifyListeners();
}
change_color_3() {
selection = Colors.deepOrange[200]!;
notifyListeners();
}
change_color_4() {
selection = Colors.pink[200]!;
notifyListeners();
}
change_color_5() {
selection = Colors.red[200]!;
notifyListeners();
}
change_color_6() {
selection = Colors.brown[200]!;
notifyListeners();
}
change_color_7() {
selection = Colors.deepPurple[200]!;
notifyListeners();
}
change_font_1() async {
_font = 30;
notifyListeners();
}
change_font_2() async {
_font = 35;
notifyListeners();
}
change_font_3() async {
_font = 40;
notifyListeners();
}
copy_on() {
_visible = !_visible;
notifyListeners();
}
page_down() {
if (_page == 0) {
_page = 0;
notifyListeners();
} else {
_page--;
notifyListeners();
}
}
page_up() {
if (_page == 152) {
_page = 152;
notifyListeners();
} else {
_page++;
notifyListeners();
}
}
}
Related
I hope you are well, I have a big problem with the flutter audio waveforms package, indeed I want to display the waveforms of my voice files in a folder, but they are not displayed and when I display the value of playerController.bufferData I get a null, please how can I manage this problem, I have already spent days on it.
Sincerely
below are my classes
import 'dart:async';
import 'dart:io';
import 'package:audio_recorder/AudioWaveFormsWidget.dart';
import 'package:audio_waveforms/audio_waveforms.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:record/record.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Audio Recorder',
debugShowCheckedModeBanner: false,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Audio Recorder'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key, required this.title}) : super(key: key);
final String title;
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
//late final PlayerController playerController1;
final record = Record();
int _recordDuration = 0;
Timer? _timer;
RecordState _recordState = RecordState.stop;
StreamSubscription<RecordState>? _recordSub;
final List<File> _audioFile = [];
#override
void initState() {
super.initState();
//Listening record state
_recordSub = record.onStateChanged().listen((recordState) {
setState(() => _recordState = recordState);
});
initCheckPermission();
setState(() {
initFileInDir();
});
}
#override
void dispose() {
_timer?.cancel();
_recordSub?.cancel();
record.dispose();
super.dispose();
}
Future initCheckPermission() async {
final statusMicrophone = await Permission.microphone.request();
final statusStorage = await Permission.storage.request();
if (statusMicrophone != PermissionStatus.granted ||
statusStorage != PermissionStatus.granted) {
await Permission.microphone.request();
await Permission.storage.request();
}
}
void _startTimer() {
_timer?.cancel();
_timer = Timer.periodic(const Duration(seconds: 1), (Timer t) {
setState(() => _recordDuration++);
});
}
Widget _buildText() {
if (_recordState != RecordState.stop) {
return _buildTimer();
}
return const Text("Waiting to record");
}
String _formatNumber(int number) {
String numberStr = number.toString();
if (number < 10) {
numberStr = '0$numberStr';
}
return numberStr;
}
Widget _buildTimer() {
final String minutes = _formatNumber(_recordDuration ~/ 60);
final String seconds = _formatNumber(_recordDuration % 60);
return Text(
'$minutes : $seconds',
style: const TextStyle(color: Colors.red),
);
}
Future<Directory> _getDir() async {
//Check platform and adjust settings
final tempDir = Platform.isAndroid
? await getExternalStorageDirectory()
: await getApplicationDocumentsDirectory();
Directory finalPath;
if (Platform.isAndroid) {
String buildDir =
tempDir!.path.replaceFirst("/data/", "/media/").split("files").first;
buildDir += "AudioRecorder"; // Plus ajout du nom de l'application
return finalPath = await Directory(buildDir).create(recursive: true);
} else {
return finalPath = await Directory(tempDir!.path).create(recursive: true);
}
}
void initFileInDir() async {
Directory finalPath = await _getDir();
var exists = await finalPath.exists();
if (exists) {
finalPath.list(recursive: false).forEach((element) {
File file = File(element.path);
_audioFile.add(file);
});
}
}
Widget _buildStopAndPlayIcon() {
if (_recordState != RecordState.stop) {
return const Icon(Icons.stop);
} else {
return const Icon(Icons.mic);
}
}
Future<void> _start() async {
Directory finalPath = await _getDir();
//Start recording
await record.start(
path: '${finalPath.path}/${DateTime.now().millisecondsSinceEpoch}.m4a',
encoder: AudioEncoder.aacLc, // by default
bitRate: 128000, // by default
samplingRate: 44100);
_recordDuration = 0;
_startTimer();
}
Future<File?> _stop() async {
_timer?.cancel();
_recordDuration = 0;
final path = await record.stop();
File? file;
if (path != null) {
file = File(path);
if (kDebugMode) {
print("--------------------------$path");
}
}
return file;
}
Future<void> _pause() async {
_timer?.cancel();
await record.pause();
}
Future<void> _resume() async {
_startTimer();
await record.resume();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Padding(
padding: const EdgeInsets.all(10.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.end,
children: [
LimitedBox(
maxHeight: 650,
child: ListView.builder(
shrinkWrap: true,
itemCount: _audioFile.length,
itemBuilder: (context, index) {
var data = _audioFile[index];
return AudioWaveFormsWidget(path: data);
},
),
),
const Spacer(),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
_buildText(),
ElevatedButton(
onPressed: () async {
if (_recordState == RecordState.stop) {
_start();
} else {
File? newFile = await _stop();
setState((){ _audioFile.add(newFile!);});
}
},
style: ButtonStyle(
elevation: MaterialStateProperty.all(0),
shape: MaterialStateProperty.all(RoundedRectangleBorder(
borderRadius: BorderRadius.circular(100),
side: BorderSide.none))),
child: _buildStopAndPlayIcon(),
)
],
),
],
),
),
// This trailing comma makes auto-formatting nicer for build methods.
);
}
}
import 'dart:io';
import 'package:audio_waveforms/audio_waveforms.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
class AudioWaveFormsWidget extends StatefulWidget {
final File path;
//final PlayerController playerController1;
const AudioWaveFormsWidget({Key? key, required this.path}) : super(key: key);
#override
State<AudioWaveFormsWidget> createState() => _AudioWaveFormsWidgetState();
}
class _AudioWaveFormsWidgetState extends State<AudioWaveFormsWidget> {
late final PlayerController playerController1;
#override
void initState() {
playerController1 = PlayerController()
..addListener(() {
if (mounted) setState(() {});
});
_preparePlayer();
super.initState();
}
void _preparePlayer() async {
bool exist = await widget.path.exists();
if (exist) {
playerController1.preparePlayer(widget.path.path);
}
print("--------------------------------${playerController1.bufferData}");
}
void _playOrPausePlayer(PlayerController controller) async {
debugPrint(
'****************************************${controller.playerState.toString()}');
controller.playerState == PlayerState.playing
? await controller.pausePlayer()
: await controller.startPlayer(finishMode: FinishMode.pause);
}
#override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
shape: BoxShape.rectangle,
color: Colors.lightGreenAccent,
),
child: Row(
children: [
IconButton(
onPressed: () {
_playOrPausePlayer(playerController1);
},
icon: playerController1.playerState == PlayerState.playing
? const Icon(Icons.pause)
: const Icon(Icons.play_arrow)),
AudioFileWaveforms(
density: 1.0,
enableSeekGesture: true,
size: const Size(100.0, 70.0),
playerController: playerController1),
],
)),
);
}
}
if you're trying to record, try setting the bitRate to 48000 (worked for me on iOS when it wasn't showing the waveforms when recording).
final RecorderController recorderController = RecorderController()
..androidEncoder = AndroidEncoder.aac
..androidOutputFormat = AndroidOutputFormat.mpeg4
..iosEncoder = IosEncoder.kAudioFormatMPEG4AAC
..sampleRate = 44100
..bitRate = 48000;
I'm trying to implement Flutter InApp purchases on Consumables but I keep getting the following - error you already own this item when I try to buy again.
I want the user to buy over and over again.
This is happening on android.
I'm using in_app_purchase: ^0.3.4+5
I used the code in official docs for the plugin -
// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:in_app_purchase/in_app_purchase.dart';
import 'package:in_app_purchase/store_kit_wrappers.dart';
import 'consumable_store.dart';
void main() {
// For play billing library 2.0 on Android, it is mandatory to call
// [enablePendingPurchases](https://developer.android.com/reference/com/android/billingclient/api/BillingClient.Builder.html#enablependingpurchases)
// as part of initializing the app.
InAppPurchaseConnection.enablePendingPurchases();
runApp(MyApp());
}
// Original code link: https://github.com/flutter/plugins/blob/master/packages/in_app_purchase/example/lib/main.dart
const bool kAutoConsume = true;
const String _kConsumableId = '';
const String _kSubscriptionId = '';
const List<String> _kProductIds = <String>[
_kConsumableId,
'noadforfifteendays',
_kSubscriptionId
];
// TODO: Please Add your android product ID here
const List<String> _kAndroidProductIds = <String>[
''
];
//Example
//const List<String> _kAndroidProductIds = <String>[
// 'ADD_YOUR_ANDROID_PRODUCT_ID_1',
// 'ADD_YOUR_ANDROID_PRODUCT_ID_2',
// 'ADD_YOUR_ANDROID_PRODUCT_ID_3'
//];
// TODO: Please Add your iOS product ID here
const List<String> _kiOSProductIds = <String>[
''
];
//Example
//const List<String> _kiOSProductIds = <String>[
// 'ADD_YOUR_IOS_PRODUCT_ID_1',
// 'ADD_YOUR_IOS_PRODUCT_ID_2',
// 'ADD_YOUR_IOS_PRODUCT_ID_3'
//];
class MyApp extends StatefulWidget {
#override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final InAppPurchaseConnection _connection = InAppPurchaseConnection.instance;
StreamSubscription<List<PurchaseDetails>> _subscription;
List<String> _notFoundIds = [];
List<ProductDetails> _products = [];
List<PurchaseDetails> _purchases = [];
List<String> _consumables = [];
bool _isAvailable = false;
bool _purchasePending = false;
bool _loading = true;
String _queryProductError;
#override
void initState() {
DateTime currentDate = DateTime.now();
DateTime noADDate;
var fiftyDaysFromNow = currentDate.add(new Duration(days: 50));
print('${fiftyDaysFromNow.month} - ${fiftyDaysFromNow.day} - ${fiftyDaysFromNow.year} ${fiftyDaysFromNow.hour}:${fiftyDaysFromNow.minute}');
Stream purchaseUpdated =
InAppPurchaseConnection.instance.purchaseUpdatedStream;
_subscription = purchaseUpdated.listen((purchaseDetailsList) {
_listenToPurchaseUpdated(purchaseDetailsList);
}, onDone: () {
_subscription.cancel();
}, onError: (error) {
// handle error here.
});
initStoreInfo();
super.initState();
}
Future<void> initStoreInfo() async {
final bool isAvailable = await _connection.isAvailable();
if (!isAvailable) {
setState(() {
_isAvailable = isAvailable;
_products = [];
_purchases = [];
_notFoundIds = [];
_consumables = [];
_purchasePending = false;
_loading = false;
});
return;
}
ProductDetailsResponse productDetailResponse =
await _connection.queryProductDetails(Platform.isIOS ? _kiOSProductIds.toSet() : _kAndroidProductIds.toSet());//_kProductIds.toSet());
if (productDetailResponse.error != null) {
setState(() {
_queryProductError = productDetailResponse.error.message;
_isAvailable = isAvailable;
_products = productDetailResponse.productDetails;
_purchases = [];
_notFoundIds = productDetailResponse.notFoundIDs;
_consumables = [];
_purchasePending = false;
_loading = false;
});
return;
}
if (productDetailResponse.productDetails.isEmpty) {
setState(() {
_queryProductError = null;
_isAvailable = isAvailable;
_products = productDetailResponse.productDetails;
_purchases = [];
_notFoundIds = productDetailResponse.notFoundIDs;
_consumables = [];
_purchasePending = false;
_loading = false;
});
return;
}
final QueryPurchaseDetailsResponse purchaseResponse =
await _connection.queryPastPurchases();
if (purchaseResponse.error != null) {
// handle query past purchase error..
}
final List<PurchaseDetails> verifiedPurchases = [];
for (PurchaseDetails purchase in purchaseResponse.pastPurchases) {
if (await _verifyPurchase(purchase)) {
verifiedPurchases.add(purchase);
}
}
List<String> consumables = await ConsumableStore.load();
setState(() {
_isAvailable = isAvailable;
_products = productDetailResponse.productDetails;
_purchases = verifiedPurchases;
_notFoundIds = productDetailResponse.notFoundIDs;
_consumables = consumables;
_purchasePending = false;
_loading = false;
});
}
#override
void dispose() {
_subscription.cancel();
super.dispose();
}
#override
Widget build(BuildContext context) {
List<Widget> stack = [];
if (_queryProductError == null) {
stack.add(
ListView(
children: [
_buildConnectionCheckTile(),
_buildProductList(),
_buildConsumableBox(),
],
),
);
} else {
stack.add(Center(
child: Text(_queryProductError),
));
}
if (_purchasePending) {
stack.add(
Stack(
children: [
Opacity(
opacity: 0.3,
child: const ModalBarrier(dismissible: false, color: Colors.grey),
),
Center(
child: CircularProgressIndicator(),
),
],
),
);
}
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('IAP Example'),
),
body: Stack(
children: stack,
),
),
);
}
Card _buildConnectionCheckTile() {
if (_loading) {
return Card(child: ListTile(title: const Text('Trying to connect...')));
}
final Widget storeHeader = ListTile(
leading: Icon(_isAvailable ? Icons.check : Icons.block,
color: _isAvailable ? Colors.green : ThemeData.light().errorColor),
title: Text(
'The store is ' + (_isAvailable ? 'available' : 'unavailable') + '.'),
);
final List<Widget> children = <Widget>[storeHeader];
if (!_isAvailable) {
children.addAll([
Divider(),
ListTile(
title: Text('Not connected',
style: TextStyle(color: ThemeData.light().errorColor)),
subtitle: const Text(
'Unable to connect to the payments processor. Has this app been configured correctly? See the example README for instructions.'),
),
]);
}
return Card(child: Column(children: children));
}
Card _buildProductList() {
if (_loading) {
return Card(
child: (ListTile(
leading: CircularProgressIndicator(),
title: Text('Fetching products...'))));
}
if (!_isAvailable) {
return Card();
}
final ListTile productHeader = ListTile(title: Text('Products for Sale'));
List<ListTile> productList = <ListTile>[];
if (_notFoundIds.isNotEmpty) {
productList.add(ListTile(
title: Text('[${_notFoundIds.join(", ")}] not found',
style: TextStyle(color: ThemeData.light().errorColor)),
subtitle: Text(
'This app needs special configuration to run. Please see example/README.md for instructions.')));
}
// This loading previous purchases code is just a demo. Please do not use this as it is.
// In your app you should always verify the purchase data using the `verificationData` inside the [PurchaseDetails] object before trusting it.
// We recommend that you use your own server to verity the purchase data.
Map<String, PurchaseDetails> purchases =
Map.fromEntries(_purchases.map((PurchaseDetails purchase) {
if (purchase.pendingCompletePurchase) {
InAppPurchaseConnection.instance.completePurchase(purchase);
}
return MapEntry<String, PurchaseDetails>(purchase.productID, purchase);
}));
productList.addAll(_products.map(
(ProductDetails productDetails) {
PurchaseDetails previousPurchase = purchases[productDetails.id];
return ListTile(
title: Text(
productDetails.title,
),
subtitle: Text(
productDetails.description,
),
trailing: previousPurchase != null
? Icon(Icons.check)
: FlatButton(
child: Text(productDetails.price),
color: Colors.green[800],
textColor: Colors.white,
onPressed: () {
PurchaseParam purchaseParam = PurchaseParam(
productDetails: productDetails,
applicationUserName: null,
sandboxTesting: false);
if (productDetails.id == _kConsumableId) {
_connection.buyConsumable(
purchaseParam: purchaseParam,
autoConsume: kAutoConsume || Platform.isIOS);
} else {
_connection.buyNonConsumable(
purchaseParam: purchaseParam);
}
},
));
},
));
return Card(
child:
Column(children: <Widget>[productHeader, Divider()] + productList));
}
Card _buildConsumableBox() {
if (_loading) {
return Card(
child: (ListTile(
leading: CircularProgressIndicator(),
title: Text('Fetching consumables...'))));
}
if (!_isAvailable || _notFoundIds.contains(_kConsumableId)) {
return Card();
}
final ListTile consumableHeader =
ListTile(title: Text('Purchased consumables'));
final List<Widget> tokens = _consumables.map((String id) {
return GridTile(
child: IconButton(
icon: Icon(
Icons.stars,
size: 42.0,
color: Colors.orange,
),
splashColor: Colors.yellowAccent,
onPressed: () => consume(id),
),
);
}).toList();
return Card(
child: Column(children: <Widget>[
consumableHeader,
Divider(),
GridView.count(
crossAxisCount: 5,
children: tokens,
shrinkWrap: true,
padding: EdgeInsets.all(16.0),
)
]));
}
Future<void> consume(String id) async {
print('consume id is $id');
await ConsumableStore.consume(id);
final List<String> consumables = await ConsumableStore.load();
setState(() {
_consumables = consumables;
});
}
void showPendingUI() {
setState(() {
_purchasePending = true;
});
}
void deliverProduct(PurchaseDetails purchaseDetails) async {
print('deliverProduct'); // Last
// IMPORTANT!! Always verify a purchase purchase details before delivering the product.
if (purchaseDetails.productID == _kConsumableId) {
await ConsumableStore.save(purchaseDetails.purchaseID);
List<String> consumables = await ConsumableStore.load();
setState(() {
_purchasePending = false;
_consumables = consumables;
});
} else {
setState(() {
_purchases.add(purchaseDetails);
_purchasePending = false;
});
}
}
void handleError(IAPError error) {
setState(() {
_purchasePending = false;
});
}
Future<bool> _verifyPurchase(PurchaseDetails purchaseDetails) {
// IMPORTANT!! Always verify a purchase before delivering the product.
// For the purpose of an example, we directly return true.
print('_verifyPurchase');
return Future<bool>.value(true);
}
void _handleInvalidPurchase(PurchaseDetails purchaseDetails) {
// handle invalid purchase here if _verifyPurchase` failed.
print('_handleInvalidPurchase');
}
void _listenToPurchaseUpdated(List<PurchaseDetails> purchaseDetailsList) {
print('_listenToPurchaseUpdated');
purchaseDetailsList.forEach((PurchaseDetails purchaseDetails) async {
if (purchaseDetails.status == PurchaseStatus.pending) {
showPendingUI();
} else {
if (purchaseDetails.status == PurchaseStatus.error) {
handleError(purchaseDetails.error);
} else if (purchaseDetails.status == PurchaseStatus.purchased) {
bool valid = await _verifyPurchase(purchaseDetails);
if (valid) {
deliverProduct(purchaseDetails);
} else {
_handleInvalidPurchase(purchaseDetails);
return;
}
}
if (Platform.isAndroid) {
if (!kAutoConsume && purchaseDetails.productID == _kConsumableId) {
await InAppPurchaseConnection.instance
.consumePurchase(purchaseDetails);
}
}
if (purchaseDetails.pendingCompletePurchase) {
await InAppPurchaseConnection.instance
.completePurchase(purchaseDetails);
}
}
});
}
}
How do I solve this?
If you want to test only with non-consumable product, then you can refund the test purchase and use it again later.
Make sure your products are consumable, and also being purchased using the buyConsumable call.
I want to search for a short sentence inside a long sentence ...
it is working fine with this demo:
String a = 'from first day i was very good';
String b = 'from first day';
print(a.contains(b));
result : true
but when I use TextField to enter a short sentence and check it if is exciting in a long sentence ...
TextField when I enter space between words doesn't show any result
Note: this app in the Arabic language and doesn't work on an android and IOS ... in English worked well in the IOS simulator but doesn't work on an android phone.
my all code:
import 'dart:convert';
import 'package:cached_network_image/cached_network_image.dart';
import 'package:egyptian_ads_app/constant/constant.dart';
import 'package:egyptian_ads_app/pages/business_man_pages/business_man_page.dart';
import 'package:egyptian_ads_app/pages/starting_page/landing_service_page.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:share/share.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:url_launcher/url_launcher.dart';
class ItemModel {
ItemModel(
{this.id,
this.title,
this.imagePath,
this.about,
this.phoneNumber,
this.traderId,
this.type,
this.city});
int id;
String title;
String imagePath;
String about;
String phoneNumber;
int traderId;
String type;
String city;
factory ItemModel.fromJson(Map<String, dynamic> json) {
return new ItemModel(
id: json['id'],
title: json['name'],
imagePath: json["logo"]['url'],
about: json['about'],
phoneNumber: json['phone_number'],
traderId: json['trader_id'],
type: json['category']['type'],
// city: json['city'],
);
}
}
class InstantSearchPage extends StatefulWidget {
#override
_InstantSearchPageState createState() => _InstantSearchPageState();
}
class _InstantSearchPageState extends State<InstantSearchPage> {
TextEditingController _searchController = TextEditingController();
Future resultsLoaded;
List<ItemModel> _allResults = [];
List<ItemModel> _resultsList = [];
#override
void initState() {
super.initState();
_searchController.addListener(_onSearchChanged);
}
#override
void dispose() {
_searchController.removeListener(_onSearchChanged);
_searchController.dispose();
super.dispose();
}
#override
void didChangeDependencies() {
super.didChangeDependencies();
resultsLoaded = getUserDetails();
}
getUserDetails() async {
final String url = 'https://yallservice.com/api/v1/departments';
final response = await http.get(url);
final responseJson = json.decode(response.body);
var data = responseJson['data'];
setState(() {
for (Map user in data) {
_allResults.add(ItemModel.fromJson(user));
}
});
searchResultsList();
return "complete";
}
_onSearchChanged() {
searchResultsList();
}
searchResultsList() {
List<ItemModel> showResults = [];
if (_searchController.text != "") {
for (var tripSnapshot in _allResults) {
String title = tripSnapshot.about;
print(title + title);
if (title.contains(_searchController.text)) {
showResults.add(tripSnapshot);
}
}
} else {
showResults = List.from(_allResults);
}
setState(() {
_resultsList = showResults;
});
}
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
leading: BackButton(),
title: Container(
color: Colors.white,
child: TextField(
controller: _searchController,
decoration: InputDecoration(prefixIcon: Icon(Icons.search)),
),
),
),
body: Container(
color: Colors.grey.shade300,
child: Column(
children: <Widget>[
Expanded(
child: ListView.builder(
itemCount: _resultsList.length,
itemBuilder: (BuildContext context, int index) {
return Container(
color: Colors.white,
child: ListTile(
subtitle: Text(_resultsList[index].about),
));
// return Card(
// index: index,
// data: _resultsList,
// );
},
)),
],
),
),
);
}
}
This is due to the encoding of white spaces in RTL strings.
Try to trim the TextField text before you search for it.
Special trim method
String trim(String string) {
assert(string != null);
final stringList = string.characters.toList();
final whitespaces = ['8206', '8207', '32'];
while (whitespaces.contains(stringList.last.runes.join()))
stringList.removeLast();
while (whitespaces.contains(stringList.first.runes.join()))
stringList.remove(stringList.first);
return stringList.join();
}
Updated searchResultsList
searchResultsList() {
List<ItemModel> showResults = [];
if (_searchController.text != "") {
for (var tripSnapshot in _allResults) {
String title = tripSnapshot.about;
if (title.contains(trim(_searchController.text))) {
showResults.add(tripSnapshot);
}
}
} else {
showResults = List.from(_allResults);
}
setState(() {
_resultsList = showResults;
});
}
Ref: Text fields' values do not get trimmed correctly when textDirection: TextDirection.rtl #68093
Improvement
Your search is currently case-sensitive. Maybe you should make it case-insensitive?
searchResultsList() {
setState(() {
_resultsList = _searchController.text.isNotEmpty
? _allResults
.where((tripSnapshot) => tripSnapshot.about
.toLowerCase()
.contains(trim(_searchController.text).toLowerCase()))
.toList()
: List.from(_allResults);
});
}
I fixed the problem just by putting textDirection: TextDirection.rtl, to my TextField
I'm trying to read file from a known path get base64 string from the image. I still don't understand why base64 is broken. This happens only in flutter code.
I did try doing the same conversion using a simple dart program i got the desired base64 string. This issue is happening in flutter.
onPressed: () async {
File imageFile =
await ImagePicker.pickImage(source: ImageSource.camera);
if (imageFile != null) {
Uint8List bytes = await imageFile.readAsBytes();
String base64data = base64.encode(bytes);
print(base64data);
}
}
Following is my console output.
W/ExifInterface(15331): Skip the tag entry since tag number is not defined: 2
W/ExifInterface(15331): Stop reading file since a wrong offset may cause an infinite loop: 0
I/chatty (15331): uid=10271(com.crowdanalytix.datax_app) Binder:15331_5 identical 2 lines
W/ExifInterface(15331): Stop reading file since a wrong offset may cause an infinite loop: 0
I/flutter (15331): 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
Base64 string which i'm getting is invalid. Can someone try this?
I'm using a OnePlus3t (ONEPLUS A3003).
print function did not print everything.
you can see full result with debug mode
code snippet
List<int> imageBytes = await _imageFile.readAsBytes();
String base64Image = base64Encode(imageBytes);
print(base64Image);
Copy base64 string from debug mode and paste to online converter, you can see result is correct.
full code from offical demo and add base64 convert
// Copyright 2019 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'dart:io';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:video_player/video_player.dart';
import 'dart:typed_data';
import 'package:image/image.dart' as ImageProcess;
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Image Picker Demo',
home: MyHomePage(title: 'Image Picker Example'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
File _imageFile;
dynamic _pickImageError;
bool isVideo = false;
VideoPlayerController _controller;
String _retrieveDataError;
Future<void> _playVideo(File file) async {
if (file != null && mounted) {
await _disposeVideoController();
_controller = VideoPlayerController.file(file);
await _controller.setVolume(1.0);
await _controller.initialize();
await _controller.setLooping(true);
await _controller.play();
setState(() {});
}
}
void _onImageButtonPressed(ImageSource source) async {
if (_controller != null) {
await _controller.setVolume(0.0);
}
if (isVideo) {
final File file = await ImagePicker.pickVideo(source: source);
await _playVideo(file);
} else {
try {
_imageFile = await ImagePicker.pickImage(source: source);
List<int> imageBytes = await _imageFile.readAsBytes();
String base64Image = base64Encode(imageBytes);
print(base64Image);
setState(() {});
} catch (e) {
_pickImageError = e;
}
}
}
#override
void deactivate() {
if (_controller != null) {
_controller.setVolume(0.0);
_controller.pause();
}
super.deactivate();
}
#override
void dispose() {
_disposeVideoController();
super.dispose();
}
Future<void> _disposeVideoController() async {
if (_controller != null) {
await _controller.dispose();
_controller = null;
}
}
Widget _previewVideo() {
final Text retrieveError = _getRetrieveErrorWidget();
if (retrieveError != null) {
return retrieveError;
}
if (_controller == null) {
return const Text(
'You have not yet picked a video',
textAlign: TextAlign.center,
);
}
return Padding(
padding: const EdgeInsets.all(10.0),
child: AspectRatioVideo(_controller),
);
}
Widget _previewImage() {
final Text retrieveError = _getRetrieveErrorWidget();
if (retrieveError != null) {
return retrieveError;
}
if (_imageFile != null) {
return Image.file(_imageFile);
} else if (_pickImageError != null) {
return Text(
'Pick image error: $_pickImageError',
textAlign: TextAlign.center,
);
} else {
return const Text(
'You have not yet picked an image.',
textAlign: TextAlign.center,
);
}
}
Future<void> retrieveLostData() async {
final LostDataResponse response = await ImagePicker.retrieveLostData();
if (response.isEmpty) {
return;
}
if (response.file != null) {
if (response.type == RetrieveType.video) {
isVideo = true;
await _playVideo(response.file);
} else {
isVideo = false;
setState(() {
_imageFile = response.file;
});
}
} else {
_retrieveDataError = response.exception.code;
}
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Platform.isAndroid
? FutureBuilder<void>(
future: retrieveLostData(),
builder: (BuildContext context, AsyncSnapshot<void> snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.none:
case ConnectionState.waiting:
return const Text(
'You have not yet picked an image.',
textAlign: TextAlign.center,
);
case ConnectionState.done:
return isVideo ? _previewVideo() : _previewImage();
default:
if (snapshot.hasError) {
return Text(
'Pick image/video error: ${snapshot.error}}',
textAlign: TextAlign.center,
);
} else {
return const Text(
'You have not yet picked an image.',
textAlign: TextAlign.center,
);
}
}
},
)
: (isVideo ? _previewVideo() : _previewImage()),
),
floatingActionButton: Column(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
FloatingActionButton(
onPressed: () {
isVideo = false;
_onImageButtonPressed(ImageSource.gallery);
},
heroTag: 'image0',
tooltip: 'Pick Image from gallery',
child: const Icon(Icons.photo_library),
),
Padding(
padding: const EdgeInsets.only(top: 16.0),
child: FloatingActionButton(
onPressed: () {
isVideo = false;
_onImageButtonPressed(ImageSource.camera);
},
heroTag: 'image1',
tooltip: 'Take a Photo',
child: const Icon(Icons.camera_alt),
),
),
Padding(
padding: const EdgeInsets.only(top: 16.0),
child: FloatingActionButton(
backgroundColor: Colors.red,
onPressed: () {
isVideo = true;
_onImageButtonPressed(ImageSource.gallery);
},
heroTag: 'video0',
tooltip: 'Pick Video from gallery',
child: const Icon(Icons.video_library),
),
),
Padding(
padding: const EdgeInsets.only(top: 16.0),
child: FloatingActionButton(
backgroundColor: Colors.red,
onPressed: () {
isVideo = true;
_onImageButtonPressed(ImageSource.camera);
},
heroTag: 'video1',
tooltip: 'Take a Video',
child: const Icon(Icons.videocam),
),
),
],
),
);
}
Text _getRetrieveErrorWidget() {
if (_retrieveDataError != null) {
final Text result = Text(_retrieveDataError);
_retrieveDataError = null;
return result;
}
return null;
}
}
class AspectRatioVideo extends StatefulWidget {
AspectRatioVideo(this.controller);
final VideoPlayerController controller;
#override
AspectRatioVideoState createState() => AspectRatioVideoState();
}
class AspectRatioVideoState extends State<AspectRatioVideo> {
VideoPlayerController get controller => widget.controller;
bool initialized = false;
void _onVideoControllerUpdate() {
if (!mounted) {
return;
}
if (initialized != controller.value.initialized) {
initialized = controller.value.initialized;
setState(() {});
}
}
#override
void initState() {
super.initState();
controller.addListener(_onVideoControllerUpdate);
}
#override
void dispose() {
controller.removeListener(_onVideoControllerUpdate);
super.dispose();
}
#override
Widget build(BuildContext context) {
if (initialized) {
return Center(
child: AspectRatio(
aspectRatio: controller.value?.aspectRatio,
child: VideoPlayer(controller),
),
);
} else {
return Container();
}
}
}
I'm trying to capture an image from camera and save it in cache(i.e., Directory.systemTemp available from dart.io package). It is working fine in debug mode. But when I build the release apk and install, it is not working. This is the code:
import 'dart:async';
import 'dart:io';
import 'package:camera/camera.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
class CameraExampleHome extends StatefulWidget {
#override
_CameraExampleHomeState createState() {
return new _CameraExampleHomeState();
}
}
/// Returns a suitable camera icon for [direction].
IconData getCameraLensIcon(CameraLensDirection direction) {
switch (direction) {
case CameraLensDirection.back:
return Icons.camera_rear;
case CameraLensDirection.front:
return Icons.camera_front;
case CameraLensDirection.external:
return Icons.camera;
}
throw new ArgumentError('Unknown lens direction');
}
void logError(String code, String message) =>
print('Error: $code\nError Message: $message');
class _CameraExampleHomeState extends State<CameraExampleHome> {
CameraController controller;
String imagePath;
final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
Future<List<CameraDescription>> getCameras() async {
return await availableCameras();
}
#override
Widget build(BuildContext context) {
return new Scaffold(
key: _scaffoldKey,
appBar: new AppBar(
title: const Text('Camera example'),
),
body: FutureBuilder(
future: getCameras(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.none:
case ConnectionState.waiting:
return new Text('loading...');
default:
if (snapshot.hasError)
return new Text('Error: ${snapshot.error}');
else {
if (snapshot.hasData)
return createCameraView(context, snapshot);
else
return new Text('Null');
}
}
},
),
);
}
/// Display the preview from the camera (or a message if the preview is not available).
Widget _cameraPreviewWidget() {
if (controller == null || !controller.value.isInitialized) {
return const Text(
'Tap a camera',
style: const TextStyle(
color: Colors.white,
fontSize: 24.0,
fontWeight: FontWeight.w900,
),
);
} else {
return new AspectRatio(
aspectRatio: controller.value.aspectRatio,
child: new CameraPreview(controller),
);
}
}
/// Display the thumbnail of the captured image or video
/// Display the control bar with buttons to take pictures and record videos.
Widget _captureControlRowWidget() {
return new Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
new IconButton(
icon: const Icon(Icons.camera_alt),
color: Colors.blue,
onPressed: controller != null &&
controller.value.isInitialized &&
!controller.value.isRecordingVideo
? onTakePictureButtonPressed
: null,
),
],
);
}
/// Display a row of toggle to select the camera (or a message if no camera is available).
Widget _cameraTogglesRowWidget(var cameras) {
final List<Widget> toggles = <Widget>[];
if (cameras.isEmpty) {
return const Text('No camera found');
} else {
for (CameraDescription cameraDescription in cameras) {
toggles.add(
new SizedBox(
width: 90.0,
child: new RadioListTile<CameraDescription>(
title:
new Icon(getCameraLensIcon(cameraDescription.lensDirection)),
groupValue: controller?.description,
value: cameraDescription,
onChanged: controller != null && controller.value.isRecordingVideo
? null
: onNewCameraSelected,
),
),
);
}
}
return new Row(children: toggles);
}
String timestamp() => new DateTime.now().millisecondsSinceEpoch.toString();
void showInSnackBar(String message) {
_scaffoldKey.currentState
.showSnackBar(new SnackBar(content: new Text(message)));
}
void onNewCameraSelected(CameraDescription cameraDescription) async {
if (controller != null) {
await controller.dispose();
}
controller = new CameraController(cameraDescription, ResolutionPreset.high);
// If the controller is updated then update the UI.
controller.addListener(() {
if (mounted) setState(() {});
if (controller.value.hasError) {
showInSnackBar('Camera error ${controller.value.errorDescription}');
}
});
try {
await controller.initialize();
} on CameraException catch (e) {
_showCameraException(e);
}
if (mounted) {
setState(() {});
}
}
void onTakePictureButtonPressed() {
takePicture().then((String filePath) {
if (mounted) {
setState(() {
imagePath = filePath;
// videoController?.dispose();
// videoController = null;
});
if (filePath != null) showInSnackBar('Picture saved to $filePath');
}
});
}
Future<String> takePicture() async {
if (!controller.value.isInitialized) {
showInSnackBar('Error: select a camera first.');
return null;
}
//final Directory extDir = await getApplicationDocumentsDirectory();
final Directory extDir = Directory.systemTemp;
final String dirPath = '${extDir.path}/Pictures/flutter_test';
await new Directory(dirPath).create(recursive: true);
final String filePath = '$dirPath/${timestamp()}.jpg';
if (controller.value.isTakingPicture) {
// A capture is already pending, do nothing.
return null;
}
try {
await controller.takePicture(filePath);
} on CameraException catch (e) {
_showCameraException(e);
return null;
}
return filePath;
}
void _showCameraException(CameraException e) {
logError(e.code, e.description);
showInSnackBar('Error: ${e.code}\n${e.description}');
}
Widget createCameraView(BuildContext context, AsyncSnapshot snapshot) {
return new Column(
children: <Widget>[
new Expanded(
child: new Container(
width: MediaQuery.of(context).size.width,
child: _cameraPreviewWidget(),
),
),
_captureControlRowWidget(),
new Padding(
padding: const EdgeInsets.all(5.0),
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
_cameraTogglesRowWidget(snapshot.data),
//_thumbnailWidget(),
],
),
),
],
);
}
}
class CameraApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new CameraExampleHome(),
);
}
}
List<CameraDescription> cameras;
void main() {
// Fetch the available cameras before initializing the app.
runApp(new CameraApp());
}
I've tried setting the directory to await getApplicationDocumentsDirectory() like this:
final Directory extDir = await getApplicationDocumentsDirectory();
//final Directory extDir = Directory.systemTemp;
final String dirPath = '${extDir.path}/Pictures/flutter_test';
await new Directory(dirPath).create(recursive: true);
final String filePath = '$dirPath/${timestamp()}.jpg';
Then the pictures are being saved both in debug mode and the release apk. But the pictures are lost once I relaunch the app. I want them to accessible even after the app is relaunched(that is the main reason why I want to use cache).
So what's going wrong when I try to save to cache in release build of the app?
use the path_provider package instead to get the temp path https://pub.dartlang.org/packages/path_provider
Directory tempDir = await getTemporaryDirectory();
String tempPath = tempDir.path;
Directory.systemTemp is only supposed to be used on the server/console.