restart android emulator in command line on MacOS

restart android emulator in command line

#!/bin/bash -ex

# NOTE: ANDROID_HOME must be configured as an environment variable.
# Kill all the existing adb servers and start over a new adb server.
function restart_adb_server() {
  echo "********************* Restarting adb ... *********************"
  adb kill-server
  sleep 2
  adb start-server
  sleep 2
  echo "********************* Restarting adb done *********************"
}

function ensure_device_available() {
  # Must turn off exit on error temporarily
  set +e
  adb devices | grep -q offline
  if [ $? -eq 0 ]; then
    restart_adb_server
    adb devices | grep -q offline
    if [ $? -eq 0 ]; then
      echo "Device remains 'offline'.  Please investigate!"
      exit 1
    fi
  fi
  set -e
}

function kill_all_emulators() {
    # kill all the emulators
    adb devices | grep emulator | cut -f1 | while read line; do adb -s $line emu kill; done
}

# restart emulator Pixel_2_API_26 with no GUI ("-no-window") and quick boot ("-no-snapshot"). 
# Need to use AVD manager to create an emulator with name Pixel_2_API_26 first of all.  
function restart_emulator() {
    restart_adb_server
    
    kill_all_emulators
    $ANDROID_HOME/emulator/emulator -avd Pixel_2_API_26 -no-window -no-snapshot &
    sleep 30
    
    ensure_device_available
}

restart_emulator