Install Flutter

1. Download SDK releases
2. Uncompress
   1. cd ~/development
   2. tar xf ~/Downloads/flutter_linux_1.22.3-stable.tar.xz
3. add variables

hz@h:~/development$ export PUB_HOSTED_URL=https://pub.flutter-io.cn

hz@h:~/development$ export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn

hz@h:~/development$ export PATH="$PATH:`pwd`/flutter/bin"

    4. flutter doctor

export PATH="$PATH:`pwd`/bin"

export ANDROID_SDK_ROOT=/home/hz/android-studio