flutter - wafrat (Page 4)

Hero works great! except with text

You can watch the 1 minute YouTube demo on the documentation: Hero class - widgets library - Dart APIAPI docs for the Hero class from the widgets library, for the Dart programming language.Dart API There's also a full page that goes in-depth about the topic: https://flutter.dev/docs/

flutter

How to write unit tests with Firebase in Flutter

I've recently published a few packages to help write unit tests for Flutter apps that use Firebase. This includes Firestore, Firebase Storage, Firebase Authentication with Google Sign In. Quick links to the packages * https://pub.dev/packages/cloud_firestore_mocks * https://pub.dev/packages/firebase_storage_mocks * https://pub.dev/

android

Fixing `Google Api Error: apkNotificationMessageKeyTargetSdkVersionTooLow`

I started receiving this error message when updating my apps to the Play Store: Google Api Error: apkNotificationMessageKeyTargetSdkVersionTooLow: Your app currently targets API level 27 and must target at least API level 28. To fix it, I upgraded the version in build.gradle from: android { compileSdkVersion 28 ... defaultConfig { applicationId "..." minSdkVersion

flutter

Authentication broke after updating FirebaseAuth

I had written a post on how to set up Authentication with Firebase in Flutter (see Authentication in Flutter). But Firebase auth has recently released a breaking change with v0.14. Here's how to fix it. The change is that signInWithCredential used to return a FirebaseUser. Now it returns an

flutter

Recording and playing audio in Flutter

Thanks to the hard work of package developers, it is easy to record audio in Flutter. First try I used one of the first results from a search on pub.dev. The package is called flutter_sound. After setting the permissions in the Android and iOS project as documented, I

flutter

Achieving smaller app sizes with app bundles in Flutter and Fastlane

When compiling my app with flutter build apk, I've started receiving a message telling me to use app bundles, as they would reduce my app sizes. You are building a fat APK that includes binaries for android-arm, android-arm64. If you are deploying the app to the Play Store, it's recommended

flutter

Screenshot tests in Flutter

I love screenshot tests. On top of making sure new code does not break your UI, it helps show that your pull request does what it says it does. It looks like there are two major alternatives. One is a third-party package called screenshots. It even comes with a Medium

flutter

Receive Share Image intents in Flutter

In the previous post, we covered how to handle Share Text intents. This post builds on the previous one, so check it out if you haven't done so yet. This time we'll go through receiving Share Image intents. Note that this works for regular files too. Intent Filter The intent

internationalization

Formatting Dates in Flutter

I wanted to internationalize dates to French. Here's how I used the intl package. All the information has already been documented in https://pub.dev/packages/intl, but I will summarize each element that I needed as well as some gotchas. First I simply created my formatter like so: DateFormat.

flutter

Flutter: AndroidX migration

I recently upgraded firebase_auth and my project stopped compiling because they've migrated to AndroidX, meaning I had to migrate my whole project as well. Here's how I did it. After upgrading firebase_auth version past , I started getting this compile error: ~/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.

flutter

GestureDetector on transparent Widgets

I've been using a GestureDetector to detect taps on an icon. The problem is that unless I tapped exactly on the icon, it wouldn't detect the tap. My first idea was to wrap the Icon in a Container with some padding: return GestureDetector( onTap: () { ... }, child: Icon(Icons.bluetooth)); to return

visual studio code

Test coverage in Dart & Flutter

Unit tests improve productivity dramatically. With enough coverage, you can make changes quickly while ensuring you have not broken any significant piece. How it works You run your unit tests and a tool measures which lines have been tested. The information is stored in an lcov*.info file. Later an

flutter

Optimizing for Flutter development

I use a MacBook Pro 13 (2017, 8 GB, no touch bar), and everything seems so slow: typing is laggy, running the projet in the emulator freezes the computer for a good minute, clicking in the emulator misses half the time, so I have to click several times for it

flutter

Authentication in Flutter

Authentication and integrating a database are the two building blocks of any app. We use authentication to make sure users have access only to their own data. Initial set up Setting up Firebase Auth as per the docs: https://pub.dartlang.org/packages/firebase_auth They also tell us to

flutter

Integrating Firebase into a Flutter app

Following the Flutter Firebase codelab: * Created a Firebase project. * Added the debug SHA signature. To get it, run keytool -list -v -alias androiddebugkey -keystore ~/.android/debug.keystore with no password. * Ran it in the emulator. * It failed with an error about multidex. Luckily the tutorial explains how to work around

flutter

Publishing a Flutter app to the Play Store

I'll skip details for the first few steps. Set up an empty app Empty app Test on Android and iOS VM Set up BitBucket repo git init git add . git commit -a -m 'initial commit.' Publish to Play Store as Alpha I followed the Flutter doc on deploying (doc)

flutter

Learning Flutter

As explained in my previous post, Dart can be used to write mobile apps. I want to write a flashcard app for Android. Setting up the environment I am using a MacBook. I installed Flutter 0.9.4 beta. Then as per the docs, I installed Android Studio Preview, installed