Летучий программист

ISSUE : CustomScrollView widget which consists of SlivderList(SliverChildBuilderDelegate) and is supported by riverpod state management suddenly occured the error below. Sliver-related widget doesn't show the specified widget from provider's when method (error: (err, stackTrace) => const SizedBox()) and throws an exception Error Output Code: list() { final notifications = ref.watch(notificationP..

Before - There was no null-handling in the method "firstWhere" which throws an error "Bad State" once it returns "null" value. String? title = e.inspections .firstWhere((e) => e.name == inspection.name) .value; text = Text( title ?? '-'); After - Add "orElse" caluse inside the method but note that value "null" is unavailable to set. In my case, the returned value is an object of "Inspection" tha..

Hooks ? - let us organize the logic inside a component into reusable isolated units. - let use functions instead of having to constantly switch between functions, classes, higher-order components, and render props. - are fully encapsulated and work as a isolated local state within the currently running component. - redeems statefulWidget's difficulty of logic reusability. (Ref -> https://medium...

ISSUE => table_calendar is not scrollable vertically inside the main scrollview widget. If you don't use vertical gesture for table calendar and want to make it scrollable listening to the main widget such as ListView, SingleChildScrollView, set "false" to the property of "primary" of ListView and make sure that you have blocked verticalSwipe in "availableGestures" inside Table Calendar.

👋 Request a certificate from a certificate authority to upload to configure the function above. - Go to "Keychain Access" in your mac and move to [Certificate Assitant] -> [Request a Certificate from a certificate authority]. - Put your email address of the main developer account and name. CA email address is skippable that means you shouldn't select "Emailed to the CA" as a request. Specify key..

1. Register an App ID. - Sign in with your apple developer account then select the options below. - Fill in the fields. You should specify an app name in english in the description field and a bundle id by refering to [Xcode - TARGETS(Runner) - General - Bundle Identifier] - Enable capabilities that are used in the app. It's unnecessary to assign possible capabilities right now as it is updatabl..

앱 아이콘 설정 👩🏼‍🦰 가장 손쉬운 방법으로는 flutter_launcher_icons 라이브러리를 사용하는 것. 👱🏼‍♀️본인은 figma를 통해 각 해상도에 맞는 이미지를 추출했으나 없을 경우에는 https://appicon.co/ 를 통해 생성할 것. 1. AOS 1-1. 해상도별 "PNG" 파일을 준비하여 [app] - [main] - [res] 의 mipmap의 각 파일에 원하는 파일명 혹은 기본 파일명(ic_launcher)로 지정하여 넣어준다. 👀 파일 명은 전체 다 동일해야 한다. mdpi 1x (160dpi) hdpi 1.5x (240dpi) xhdpi 2x (320dpi) xxhdpi 3x (480dpi) xxxhdpi 4x (640dpi) 1-2. 파일명이 ic_launcher가 아..

1) Install a "flutterfire" cli (make sure your flutter version is not less than 3). 1-1) npm install -g firebase-tools Err) EACCES: permission denied Solution) Set a new configuration for global installation of packages. # create a directory at root dir. mkdir ~/.npm-global # configure npm npm config set prefix '~/.npm-global' # open or create a profile file vi ~/.profile # add a enviromental pa..

Add all needed dependencies below. ## flutter only flutter_riverpod ## makes to use flutter_hooks and Riverpod together hooks_riverpod ## dart only riverpod Consumer listens to providers inside a StatefulWidget. rebuilds widgets once a provider gets updated. final valueProvider = Provider((ref) => 42); class ProviderPage extends StatelessWidget { const ProviderPage({ super.key, required this.col..

Solution 1) Uninstall and reinstall podfile in "ios" directory of your root project. pod deintegrate pod install Solution 2) - Close the window of Xcode and command the lines below in "ios" directroy of your project in Terminal. rm -rf Pods rm -rf Podfile.lock pod install - Open the file ".xcworkspace" with the Xcode and go to [product] in menu and click "clean". - Retry to archive.