1、检查是否安装adb
briandeMacBook-Pro:~ brian$ adb
-bash: adb: command not found
briandeMacBook-Pro:~ brian$
2、未安装则执行指令：$ brew cask install android-platform-tools
briandeMacBook-Pro:~ brian$ brew cask install android-platform-tools
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/cask and caskroom/cask).
==> Satisfying dependencies
==> Downloading https://dl.google.com/android/repository/platform-tools_r29.0.2-
######################################################################## 100.0%
==> Verifying SHA-256 checksum for Cask 'android-platform-tools'.
==> Installing Cask android-platform-tools
==> Linking Binary 'adb' to '/usr/local/bin/adb'.
==> Linking Binary 'dmtracedump' to '/usr/local/bin/dmtracedump'.
==> Linking Binary 'etc1tool' to '/usr/local/bin/etc1tool'.
==> Linking Binary 'fastboot' to '/usr/local/bin/fastboot'.
==> Linking Binary 'hprof-conv' to '/usr/local/bin/hprof-conv'.
==> Linking Binary 'mke2fs' to '/usr/local/bin/mke2fs'.