The official way to install the flutter and its dependencies is a mishmash of
brew install, binary downloads alongside relying on system installed versions of ruby.
I became particularly frustrated when trying to setup flutter on macOS Mojave and macOS Catalina. I came across too many issues, and it took a lot of stackoverflow and google searches to overcome.
By using a package manager to install dependencies and runtimes, we can share the exact same setup in different environments and automate the install and escape the above issues.
This is particularly valuable if you use different machines, or have team members in different locations. Moreover, we know where everything belongs and how to upgrade or uninstall if necessary.
Until a complete homebrew approach is released, I think this is a decent step by step approach.
If you don't have asdf installed already, you can follow my tutorial on how to install asdf
You should also install xcode via the mac app store. This could take a while depending on your download speed.
This will install the dependencies for flutter and asdf which we will use to install the runtimes.
- asdf for our
- android sdk for command line util
- android studio to build flutter apps for android
- intel haxm to help speed up flutter rendering
- adoptopenjdk8 prebuilt java binary to make sure the above android stuff works
brew install asdf brew install android-sdk brew install android-studio brew install haxm brew cask install adoptopenjdk8
There are three steps for asdf, but this won't take long except depending on your download speed.
1) Install the asdf plugins for
asdf plugin install dart https://github.com/patoconnor43/asdf-dart.git asdf plugin-add flutter asdf plugin install ruby https://github.com/asdf-vm/asdf-ruby.git
2) Install the actual runtimes
- latest version of dart
- latest stable version of flutter
- We will use ruby 2.3.7 because it allows us to install cocoapods on macOS catalina.
You can use the latest version of Ruby if you like, but I've come across issues.
asdf install dart 2.7.0 asdf install flutter 1.12.13+hotfix.7-stable asdf install ruby 2.3.7
3) Set the runtimes to global or local.
You can set these to local if you have multiple projects that rely upon different versions.
asdf global dart 2.7.0 asdf global flutter 1.12.13+hotfix.7-stable asdf global ruby 2.3.7
We don't need to use
sudo we can install direct into the asdf ruby version.
gem install cocoapods
The latest version of cocopads (1.8.4) doesn't respect the
pod setup command on macOS catalina, so we have to use an older version until this bug is resolved.
gem install cocoapods -v 1.7.5
Install the cocoapods dependencies
You will need to install the flutter and dart plugins for android studio, otherwise
flutter doctor will complain later on.
Simply open up the app, go to
configure > plugins and then install from the dialog as shown below.
We need to accept the licences for xcode in order to build ios apps
sudo xcodebuild -license
We need to accept the android licences in order to build our flutter app for android
flutter doctor --android-licenses
sdkmanager to make sure all dependencies are installed (depends on
adoptopenjdk8 that we installed via brew)
You might need to add these into your
.bash_profile files if you get complaints about haxm or java.
export INTEL_HAXM_HOME=/usr/local/Caskroom/intel-haxm export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
Finally lets check our flutter install
flutter doctor -v
This is what you should see if all the above was done right.
After completing all the above steps we now know that
ruby are all managed via asdf.
The remaining dependencies are all installed via homebrew. Updates and upgrades should be straightforward, and we can document builds and releases to a particular setup.