flutter-dependencies

问题 Unhandled Exception: DatabaseException(table UsernameTable has no column named rememberMe (Sqlite code 1): , while compiling: INSERT OR REPLACE INTO UsernameTable (username, rememberMe) VALUES (?, ?), (OS error - 2:No such file or directory)) sql 'INSERT OR REPLACE INTO UsernameTable (username, rememberMe) VALUES (?, ?)' args [term@melfs, 1]} I upgraded my DB. I added new column to UsernameTable Table. But It's not working. I have already so many records in this db. I can't drop So How I do

问题 I tried few file pickers but they are not working. Please suggest me a file picker with Sample code of example. 回答1: use file_picker package maybe... not working you write permission in android manifest <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> example code class FilePickerDemo extends StatefulWidget { @override _FilePickerDemoState createState() => new _FilePickerDemoState(); } class _FilePickerDemoState extends State<FilePickerDemo> { String _fileName;

问题 I want to know how to build a search bar where it filters the users search input into groups or tabs such as people, tags, places just like what instagram has but I don't know how to do this! 回答1: It could look like this: import 'package:flutter/material.dart'; main() => runApp( MaterialApp( // home: Scaffold( // body: Container(child: SearchButton()), home: Body()), ); class Body extends StatefulWidget { @override _BodyState createState() => _BodyState(); } class _BodyState extends State

问题 After getting the comment, i have deployed this folowing code to my firebase project and it was successfully deploed!.But there is no notifications been send to me. Please check my Firebase Realtime database Screenshot here for better understanding. [ITS SOLVED NOW:IT WILL SEND NOTIFICATIONS TO ONLY ONE ID ie My Admin Device] WORKING CODE: const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(functions.config().firbase); exports

问题 Hi after installing flutter on our CI-Server I got the following message: ... [Setup Flutter Android] [✓] Flutter (Channel beta, v0.0.0-unknown, on Linux, locale en_US) ... had some already the same issue? 回答1: I also had this problem on CentOS. It turns out that the default git installed in CentOs is too out-of-dated. Please try upgrading git to the latest version on CentOS by following this answer link and then run flutter doctor again 回答2: I've encountered this problem on CentOS 7. This

问题 I rendered bar chart using the charts_flutter package in flutter. But the domain label on x-axis overlap each other. Is there a way I can resolve this? Is there a way to either incline the text or increase the width of the chart so that it becomes horizontally scrollable? I have tried searching for any solutions like labelspecs but could not reach a solution. Here's my code - double maxheight = .80 * MediaQuery.of(context).size.height; var series = [ new charts.Series( domainFn:

问题 I am getting the following error after running flutter upgrade : Because every version of flutter_test from sdk depends on path 1.5.1 and flutter_advanced_networkimage >=0.2.9+1 depends on path ^1.6.0, flutter_test from sdk is incompatible with flutter_advanced_networkimage >=0.2.9+1. So, because testapp depends on both flutter_advanced_networkimage ^0.2.10 and flutter_test any from sdk, version solving failed. pub upgrade failed (1) My pubspec.yaml : name: testapp description: A new Flutter

问题 When I update my package to image_picker: ^0.6.0+9 getting build error. I have already migrate Android X. Error: Launching lib/main.dart on vivo V3 in debug mode... Initializing gradle... Resolving dependencies... Running Gradle task 'assembleDebug'... D8: Program type already present: android.support.v4.media.MediaBrowserCompat$CustomActionCallback FAILURE: Build failed with an exception. What went wrong: Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

问题 When I am debugging the app, everything works fine, but after I perform these commands: flutter clean flutter build apk flutter install The installed app is not working properly (Not loading data from API). Any ideas? pubspec.yaml: name: test_app description: A new Flutter project. https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html version: 1.0.0+1 environment: sdk: ">=2.1.0 <3.0.0" dependencies: flutter: sdk:

问题 In Android we have, Settings.Secure.ANDROID_ID . I do not know the iOS equivalent. Is there a flutter plugin or a way to get a unique device id for both Android and IOS in flutter? 回答1: There is a plugin called device_info. You can get it here. In iOS there is no way you can get a unique device ID. There is a wok around for this. static Future<List<String>> getDeviceDetails() async { String deviceName; String deviceVersion; String identifier; final DeviceInfoPlugin deviceInfoPlugin = new