flutter - wafrat (Page 2)

Mocking http.Client

Mocking http.Client is well documented, yet it didn't go as smoothly as expected. I'm following the guide at https://docs.flutter.dev/cookbook/testing/unit/mocking#3-create-a-test-file-with-a-mock-httpclient. My first change compared to the doc is that I did not import http as http, because I don't have any conflict.

flutter

Fixing `Error (Xcode): Signing for "GoogleSignIn-GoogleSignIn" requires a development team. Select a development team in the Signing & Capabilities editor. [project]/ios/Pods/Pods.xcodeproj`

Today my Flutter project started refusing to compile for iOS with the following errors: Error (Xcode): Signing for "GoogleSignIn-GoogleSignIn" requires a development team. Select a development team in the Signing & Capabilities editor. [project]/ios/Pods/Pods.xcodeproj Error (Xcode): Signing for "gRPC-C++-gRPCCertificates-Cpp" requires a development team. Select a development

flutter

Fixing `GoogleSignIn 0x10461abdc -[GIDSignIn signInWithConfiguration:presentingViewController:hint:additionalScopes:callback:] + 228 (GIDSignIn.m:242)` in Flutter iOS

I recently started using flutterfire_ui's SignInScreen, and it was working great for Android and Web, but not iOS. For some reason, when I clicked on "Sign in with Google", it would crash the app, and throw this debug info: Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception

flutter

Fixing warnings about IPHONEOS_DEPLOYMENT_TARGET even though `platform :ios, '11.0'` is set

Today I've been getting warnings about the IPHONEOS_DEPLOYMENT_TARGET even though my Podfile looked like it was already set up correctly: platform :ios, '11.0' ... It reminds me of a similar issue I ran into long ago (see my post). However this time I decided to give it another

flutter

Fixing `../../.pub-cache/hosted/pub.dartlang.org/charts_flutter-0.12.0/lib/src/chart_container.dart:205:27: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.`

This error has been going on for a while. It is not too bad since it is just a warning, not an error. So it does not prevent compilation. Still, after all this time, I expected the Google team, author of the package, to have fixed it by now. This

flutter

Fixing Running Xcode build, Compiling, linking and signing... hanging forever

I was trying to run my Flutter app in iOS for the first time, and couldn't run a Debug version on the Simulator. VSC would simply show me that it is building forever, while Activity Monitor showed no CPU activity. So I tried building it with the command line with

flutter

Fixing `In plugin 'com.google.gms.google-services' type 'com.google.gms.googleservices.GoogleServicesTask' field 'intermediateDir' without corresponding getter has been annotated with @OutputDirectory.`

Today I tried to recompile a very old Flutter project. Besides migrating to Android 1.12, I had to upgrade the Kotlin library and Gradle like in https://www.wafrat.com/fixing-module-was-compiled-with-an-incompatible-version-of-kotlin/. But then I got a new error: Some problems were found with the configuration of task ':app:

flutter

Migrating a Flutter app to Material 3

Back in April 2021 at Google I/O, they announced the next iteration of Material Design, called Material You. The new specs were designed to make apps follow the phone's theme colors. In Flutter, the migration has been ongoing, and today with Flutter 3.3, more widgets have been ported

fastlane

Fastlane stopped uploading my iOS app

Today I tried to upload a new version of my app, but it failed on iOS with a strange error: Unauthorized Access. It was strange because I did double factor authentication right, yet it still failed. Also, I'd expect it to ask me again if it had failed because of

flutter

flutterfire_ui Google signin crashes in iOS

I don't know when it started happening, but flutterfire_ui's Google sign in won't work on iOS anymore. It seemed to work on my iPhone XS, but the same build would crash on my newer iPhone 13 Max Pro. March 2023 update I ended up figuring it out! Check out

flutter

Fixing `An exception has occurred in the compiler (1.8.0_242-release)`

Today my Flutter project failed to compile with the following error: An exception has occurred in the compiler (1.8.0_242-release). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for

flutter

Fixing `CocoaPods could not find compatible versions for pod "flutter_facebook_auth"`

Today Flutter failed to compile my app to iOS with the following error: % pod install Analyzing dependencies cloud_firestore: Using Firebase SDK version '8.14.0' defined in 'firebase_core' firebase_analytics: Using Firebase SDK version '8.14.0' defined in 'firebase_core' firebase_auth: Using Firebase SDK version '8.

flutter

Fixing `The unauthenticated git protocol on port 9418 is no longer supported.` when running `flutter pub upgrade`

This morning, when I did a flutter pub upgrade, GitHub returned the following error: Git error. Command: `git fetch`) stdout: stderr: fatal: remote error: The unauthenticated git protocol on port 9418 is no longer supported. Please see https://github.blog/2021-09-01-improving-git-protocol-security-github/ for more information. exit code: 128 A quick search

flutter

Using flutterfire_ui's SignInScreen with unit tests

On the blog post describing the release of Flutter 2.8 (see https://medium.com/flutter/whats-new-in-flutter-2-8-d085b763d181), they introduced flutterfire_ui. This library provides standard UI for signing in with Firebase Auth. The post is a bit long cause I ran into a few issues. If you are not interested

flutter

Fixing `The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0`

I usually debug my Flutter apps using the Android Emulator. This time, I used the iOS Simulator. Except it threw this error: note: Using new build system note: Planning note: Build preparation complete note: Building targets in dependency order /my_project/ios/Pods/Pods.xcodeproj: warning: The iOS Simulator deployment

flutter

Fixing `Module was compiled with an incompatible version of Kotlin.`

Today I upgraded Flutter from version 2.7 to 2.9, and my app compilation started failing with this error: ~/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.5.31/43331609c7de811fed085e0dfd150874b157c32/kotlin-stdlib-common-1.5.31.jar!/META-INF/kotlin-stdlib-common.kotlin_module: Module was compiled with an incompatible version of Kotlin.

flutter

Fixing `permissionhandler/PermissionUtils.java:370: error: cannot find symbol if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S && hasPermissionInManifest(context, null, permission )), symbol: variable S, location: class VERSION_CODES`

My app suddenly refused to run on my Android Emulator. The error was: Launching lib/main.dart on sdk gphone64 arm64 in debug mode... WARNING: [Processor] Library '~/.gradle/caches/modules-2/files-2.1/com.github.canardoux/flutter_sound_core/8.4.2/d794510c32a335c61b742367e24e84ea0b0995c8/flutter_sound_core-8.4.2.aar' contains

flutter

Fixing `xcrun: error: unable to find utility "xcodebuild", not a developer tool or in PATH`

Today I tried to run a Desktop (macOS) Flutter app that used to run perfectly. This time, instead of launching, it threw this error: Launching lib/main.dart on macOS in debug mode... lib/main.dart:1ProcessException: Process exited abnormally: xcrun: error: unable to find utility "xcodebuild", not a developer

flutter

Profiling a Flutter app

Today I ran into some performance issue when I used my image gallery app on a folder of 17k images. Lots of jank. So I decided to use the Flutter profiler for the first time. I started from the Flutter performance profiling page. Flutter performance profilingDiagnosing UI performance issues in

flutter

Fixing `Unable to load asset: FontManifest.json` when using golden_toolkit

I recently started using eBay's golden_toolkit for screenshot tests instead of Flutter's built-in matchesGoldenFile. My main issue with the built-in function was that it would use the Ahem font, which is all blocks. It makes it much harder to see if your app rendered correctly. In the past, I

flutter

Getting stack traces for published Flutter apps

flutter

GridView with fixed height in Flutter

I wanted to convert a ListView into a GridView so that it would show more information on a large screen such as Web. My ListView code looked like this: return ListView.builder( physics: scrollable ? null : NeverScrollableScrollPhysics(), shrinkWrap: shrinkWrap, padding: EdgeInsets.only(top: 16.0), itemCount: words.length, itemBuilder: (context, index)

flutter

Migrating a large Flutter project to null safety

According to the guide at https://dart.dev/null-safety/migration-guide, migrating to null safety is straightforward. Let's try it on a large project. So today I switched the sdk version to 2.12 in my pubspec.yaml, and 300+ compilation errors appeared. I tried the migration tool: % dart migrate Migrating

flutter

On the importance of the Flutter environment sdk version

Yesterday I made a quick update to my app. All the code compiled and all the tests succeeded, so I published an update. This morning, I wake up to a half broken app. What happened? The simplified snippet was: await Firebase.initializeApp(); final instance = FirebaseFirestore.instance; final transformer = StreamTransformer.fromHandlers(

flutter

Upgrading pre 1.12 Android projects based on Kotlin

My old Flutter app has been complaining I need to do this migration for a while. Today I finally decided to do it. flutter/flutterFlutter makes it easy and fast to build beautiful apps for mobile and beyond. - flutter/flutterGitHubflutter Based on the criteria listed in the documentation, I