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nft

nhancv's Flutter Template

[Wiki] (https://github.com/nhancv/nft/wiki)

nft|master⚡ ⇒ flutter --version         
Flutter 3.22.2 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 761747bfc5 (5 weeks ago) • 2024-06-05 22:15:13 +0200
Engine • revision edd8546116
Tools • Dart 3.4.3 • DevTools 2.34.3

A few resources to get you started if this is your first Flutter project:

For help getting started with Flutter development, view the online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

Initial setup

Change Flutter app package

  • Search and Replace All nft to new package name

Change App display name

  • Search and Replace All NFT App to new App display name

Change App bundle id

  • Search and Replace All com.nhancv.nft to new App bundle id
  • Update directory folder path name of Android (android/app/src/main/kotlin/) same with new App bundle id

Update app icon

  • Update app icon resources:
  • assets/base/icons/adaptive_icon_background.png
  • assets/base/icons/adaptive_icon_foreground.png
  • assets/base/icons/app_icon_ad.png
  • assets/base/icons/app_icon_ios.png
  • Run command to generate native resources
flutter pub get
flutter pub run flutter_launcher_icons:main

Update splash screen

Android

  • Add launch_bg.png and launch_image.png to
+ android/app/src/main/res/drawable-mdpi
+ android/app/src/main/res/drawable-xhdpi
+ android/app/src/main/res/drawable-xxhdpi
  • Update android/app/src/main/res/drawable/launch_background.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Modify this file to customize your launch splash screen -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@android:color/white" />

    <!-- You can insert your own image assets here -->
    <item>
        <bitmap
            android:gravity="fill_horizontal|fill_vertical"
            android:src="@drawable/launch_bg" />
    </item>
    <item>
        <bitmap
            android:gravity="center"
            android:src="@drawable/launch_image" />
    </item>
</layer-list>

iOS

  • Add LaunchBackground.imageset and LaunchImage.imageset to ios/Runner/Assets.xcassets
  • Open ios/Runner.xcworkspace
  • Select Runner/Runner/LaunchScreen.storyboard
+ Expand View Controller Scene -> View Controller -> View
+ Add object -> Search ImageView -> Drag ImageView object to View (front of LaunchImage) 
-> Select Attributes inspector -> Custom Image to LaunchBackground 
-> Change View Content Mode to Scale To Fill -> Add 0, 0, 0, 0 as constrains 
-> Save

Localizations

https://flutter.dev/docs/development/accessibility-and-localization/internationalization

Install flutter_intl tool

  1. Add other locales:
  • Run Tools -> Flutter Intl -> Add Locale
  1. Access to the current locale
Intl.getCurrentLocale()
  1. Change current locale
S.load(Locale('vi'));
  1. Reference the keys in Dart code
Widget build(BuildContext context) {
    return Column(children: [
        Text(
            S.of(context).pageHomeConfirm,
        ),
        Text(
            S.current.pageHomeConfirm,// If you don't have `context` to pass
        ),
    ]);
}

Generate intl via cli

#https://pub.dev/packages/intl_utils
flutter pub get
flutter pub run intl_utils:generate

Structure

lib/
  |-generated/                     ---> auto genrated by flutter_intl
  |-l10n/                          ---> place internalization files
    |-intl_*.arb                   ---> define your translation text here
  |-models/                        ---> place object models
    |-local/                       ---> place local models
    |-remote/                      ---> place remote models
  |-pages/                         ---> define all pages/screens of application
    |-home/                        ---> place app home module included home ui and logic. We should organize as app module (eg: home, about, ...) rather then platform module (eg: activity, dialog, ...)
      |-home_page.dart             ---> define home ui
      |-home_provider.dart         ---> define home logic
  |-services/                      ---> place app services
    |-apis/                        ---> place rest APIs (networks, API base, error/exception handler, example, error type) 
    |-app/                         ---> place app configs (assets, env, route, theme)
    |-cache/                       ---> place local data services (storage, credential, preferences)
    |-safety/                      ---> place safety abstract class for widget, change notifier
    |-store/                       ---> place local store service
      |-store.dart                 ---> define abstract store
      |-store_mock.dart            ---> define mock store
  |-utils/                         ---> place app utils, extensions, helpers, loggers, styles
  |-widgets/                       ---> place app widgets
  |-main.dart                      ---> each main.dart file point to each env of app. Ex: default main.dart for dev env, create new main_prod.dart for prod env
  |-my_app.dart                    ---> application bootstrap
test/                              ---> place app unit, widget tests
test_driver/                       ---> place integration tests

Versioning

version: 1.0.1+202101001
---
Version name: 1.0.1
Version code: 202101001

Version name: major.minor.build Version code: yyyymm<build number from 000>

  • Remember to increase bold the version name and code as well.

https://medium.com/p/2dd558f8b524

Multi env

  • Create a new env factory in app_config.dart.
  • Create a new file called main_.dart. Ex: main_prod.dart and config to prod env
  • Build with specific env
# default as dev
flutter build ios

# prod
flutter build ios -t lib/main_prod.dart

Testing

flutter test

# Test and export coverage information
# output to coverage/lcov.info
flutter test --coverage

# Convert to html
## Install lcov tool to convert lcov.info file to HTML pages
- Installing in Ubuntu:
sudo apt-get update -qq -y
sudo apt-get install lcov -y
- Installing in Mac:
brew install lcov

- Gen html files
genhtml coverage/lcov.info -o coverage/html

# Open in the default browser (mac):
open coverage/html/index.html


- Mobile & Desktop
flutter test integration_test/app_test.dart

- Web:
Launch chromedriver as follows:
* Download ChromeDriver at: https://chromedriver.chromium.org/downloads
chromedriver --port=4444
flutter drive --driver=test_driver/integration_test.dart --target=integration_test/app_test.dart -d chrome

Optimize First Run performance

https://flutter.dev/docs/perf/rendering/shader

  • On Android, “first run” means that the user might see jank the first time opening the app after a fresh installation. Subsequent runs should be fine.
  • On iOS, “first run” means that the user might see jank when an animation first occurs every time the user opens the app from scratch.

How to use SkSL warmup?

1. Run the app with --cache-sksl turned on to capture shaders in SkSL
flutter run --profile --cache-sksl --purge-persistent-cache

2. Play with the app to trigger as many animations as needed; particularly those with compilation jank.

3. Press M at the command line of flutter run to write the captured SkSL shaders into a file named something like flutter_01.sksl.json. For best results, capture SkSL shaders on actual Android and iOS devices separately.

4. Build the app with SkSL warm-up using the following, as appropriate:
Android:
flutter build apk --bundle-sksl-path flutter_01.sksl.json
or
flutter build appbundle --bundle-sksl-path flutter_01.sksl.json

iOS:
flutter build ios --bundle-sksl-path flutter_01.sksl.json

Integrate facebook/google/firebase key hash

Gen new key store

keytool -genkey -v -keystore keystore-release.jks -alias KEY_ALIAS -keyalg RSA -keysize 2048 -validity 1000000 -storepass KEY_STORE_PASS -keypass KEY_PASS

Get facebook key hashes

keytool -exportcert -alias androiddebugkey -keystore keystore-debug.jks | openssl sha1 -binary | openssl base64

=> enter storePassword

Ex: smKEjJWY1ZgwHQvuE3qGjwMC6jk=

Get google/firebase key hash

keytool -exportcert -alias androiddebugkey -keystore keystore-debug.jks -list -v

=> enter storePassword

Alias name: androiddebugkey
Creation date: May 5, 2016
Entry type: PrivateKeyEntry
Certificate chain length: 1
Certificate[1]:
Owner: C=US, O=Android, CN=Android Debug
Issuer: C=US, O=Android, CN=Android Debug
Serial number: 1
Valid from: Thu May 05 15:32:50 ICT 2016 until: Sat Apr 28 15:32:50 ICT 2046
Certificate fingerprints:
     MD5:  8E:B3:66:00:35:D9:88:80:D5:DC:84:F9:2A:AE:0B:98
     SHA1: B2:62:84:8C:95:98:ED:98:30:1D:0B:EE:2F:CA:86:8F:03:02:E9:D9
     SHA256: 45:ED:59:3D:6F:41:F8:5F:04:45:FC:7D:AD:77:1A:9B:B4:33:43:27:F4:30:92:10:8E:07:D9:E9:AA:6F:8B:9C
     Signature algorithm name: SHA1withRSA
     Version: 1

Deal with signed apk on google play store.

It enables if Google Play App Signing, key hash from local release keystore file just use for upload to store, new key hash will be generated after upload and it’s a final key hash for distribution. 

Go to Play store -> Release management -> App signing -> Get SHA-1 certificate fingerprint from App signing certificate block as show in this image.

(Select App -> Release -> Setup -> App integrity for new play console)

Convert SHA-1 to facebook key hash

echo <SHA-1 HEX> | xxd -r -p | openssl base64

ex: 
echo B2:62:84:8C:95:98:ED:98:30:1D:0B:EE:2F:CA:86:8F:03:02:E9:D9 | xxd -r -p | openssl base64

Release and publish to store

Android

keyAlias=
keyPassword=
storePassword=
storeFile=keystores/keystore-release.jks

#KEY INFO
#CN(first and last name): 
#OU(organizational unit): 
#O(organization): 
#L(City or Locality): 
#ST(State or Province): 
#C(country code):
  • Create android/app/keystores/keystore-release.jks
cd android/app/keystores/
export keyAlias=
export keyPassword=
export storePassword=
keytool -genkey -v -keystore keystore-release.jks -alias $keyAlias -keyalg RSA -keysize 2048 -validity 1000000 -storepass $storePassword -keypass $keyPassword
  • Build release binary. There 2 type of binary app bundle with optimized size when download from Store and apk type.
  • To build apk
flutter build apk
  • To build app bundle
flutter build appbundle
  • Get binary from the path which displayed in console after build successfully.

iOS

  • Docs: https://flutter.dev/docs/deployment/ios
  • Create certs to build on https://developer.apple.com
    • Create app identity
    • Create certification for app
    • Create provision profile point to app identity and certification
  • Create application on https://appstoreconnect.apple.com
  • Build dart files first, at project root level
flutter pub get
find . -name "Podfile" -execdir pod install \;
flutter build ios
  • Build native application on Xcode -> Select build target to Any iOS devices -> Select Product -> Archive -> Upload to Store
  • [Optional] Build iap file in release mode. It combines steps build ios and archive and App Store IPA, and it requires the export plist config. This one is use for CI build, for manual, I recommend using XCode
flutter build ipa --release --export-options-plist=$HOME/export_options.plist -t lib/main.dart

Integrate firebase

Integrate firebase analytics

Integrate firebase crashlytics

Integrate OneSignal Push Notification

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