Use the AUR for installing Flutter:
yay -S flutter
(yay enables you to install AUR packages.)
Choose Openjdk 8 or 10. Otherwise you’ll get an error with the Android tools: Failed to install android-sdk: “java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema”.
Create a new group flutterusers, add the default user to the group, then change permissions on the folder /opt/flutter.
sudo groupadd flutterusers
sudo gpasswd -a $USER flutterusers
sudo chown -R :flutterusers /opt/flutter
sudo chmod -R g+w /opt/flutter/
If you still get permission denied errors, you can also change the permissions of the /opt/flutter folder to your $USER:
sudo chown -R $USER:flutterusers /opt/flutter
While we can avoid installing the heavy Android Studio program, we still need the SDK Manager.
You can install the SDK Manager command line tool as a standalone package. We also need the platform tools for the Android emulator and an SDK platform.
yay -S android-sdk android-sdk-platform-tools android-sdk-build-tools
We need an Android platform, too. Either use the AUR:
yay -S android-platform # installs the latest
sudo groupadd android-sdk
sudo gpasswd -a $USER android-sdk
sudo setfacl -R -m g:android-sdk:rwx /opt/android-sdk
sudo setfacl -d -m g:android-sdk:rwX /opt/android-sdk
You’ll probably also have to set up environment variables for ANDROID_SDK_ROOT and JAVA_HOME.
The Java version is under /usr/lib/jvm, in the case of version 10, it’s this:
export JAVA_HOME='/usr/lib/jvm/java-10-openjdk'
Check find /usr/lib/jvm to see the exact path.
Don’t forget to add the environment variable to your bash profile file (.bashrc or similar).
For fish shell:
set -Ux JAVA_HOME /usr/lib/jvm/java-10-openjdk
The variable ANDROID_SDK_ROOT should be set to /opt/android-sdk:
export ANDROID_SDK_ROOT='/opt/android-sdk'
or
set -Ux ANDROID_SDK_ROOT /opt/android-sdk
First, you’ll need to install the required Android image with sdkmanager:
sdkmanager --list
Then install a system image, for example:
sdkmanager --install "system-images;android-29;default;x86"
(If you didn’t install an Android platform via the AUR, use the sdkmanager to install a platform as well: sdkmanager --install "platforms;android-29".)
Now you can create an emulator:
avdmanager create avd -n <name> -k "system-images;android-29;default;x86"
(Replace with the name you want to give the emulator.)
See avdmanager for more infos.
Here’s a handy cheat sheet on GitHub.
You might get errors that “there is no space lift on device”. The error indicates that your /tmp folder is full: I am getting a no space left on device error.
Try clearing the folder or increase the available space in /tmp (instructions in link above).
Add the emulator path to your user paths, for example, in Bash:
# Android SDK
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/platform-tools/
export PATH=$PATH:$ANDROID_HOME/tools/bin/
export PATH=$PATH:$ANDROID_HOME/tools/
PATH=$ANDROID_HOME/emulator:$PATH
(Adjust to your needs.)
In my setup, I added the platform-tools and emulator:
set -U fish_user_paths /opt/android-sdk/emulator $fish_user_paths
set -U fish_user_paths /opt/android-sdk/platform-tools $fish_user_paths
It seems like sdkmanager adds some paths automatically. Make sure to check your installation to see what’s required.
For example, the error “PANIC: Missing emulator engine program for ‘x86’ CPUS.” indicates that the emulator program is not in your path.
In fish, you can check your path variables like this:
echo $fish_user_paths | tr " " "\n" | nl
echo $PATH | tr " " "\n" | nl
In Bash, there is no $fish_user_path but the second command should work, too.
- Run Android Emulator
emulator @<name-of-the-generated-avd> - Run Flutter
First, let’s check if you have accepted all licenses:
flutter doctor --android-licenses.
Then run flutter doctor -v.
Ideally, everything should work except Android Studio.
If not, make sure that you have all necessary tools on your machine and that you’ve set the environment variables. Source