android-emulator

#!/bin/bash

echo "    
                  ------- Android Emulator Shell Srcript -------

    A shell script for Unix-based systems (Linux, macOS, etc...) that basically 
    allows you to run your Android Emulator (has to be already installed) without 
    the need to open Android Studio everytime you want to launch your emulator.

      |----------------------------------------------------------------------|
      |  Author: Mohammad Shbool <@mohshbool> (https://github.com/mohshbool) |
      |----------------------------------------------------------------------|

"

# Helper funcions
getDevices() {
  while IFS=' ' read -ra args; do
    devices=( )
    for index in "${!args[@]}"; do
      if [[ "Name:" == "${args[index]}" ]]; then
        devices+=("${args[index+1]}")
      fi
    done
    echo ${devices[@]}
  done <<< $(sh -c "$listAvd")
}

isDeviceValid() {
  devices=$(getDevices)
  while IFS=' ' read -ra devices; do
    for device in "${devices[@]}"; do
      echo $device
      if [[ $1 == $device ]]; then
        return 0
      fi
    done
  done <<< $(getDevices)
  return 1
}

pp_Devices() {
  while IFS=' ' read -ra devices; do
    for i in "${!devices[@]}"; do
      echo "[$i] -  ${devices[$i]}"
      let devicesLen=$i+1
    done
  done <<< $(getDevices)
}

getDevice() {
  while IFS=' ' read -ra devices; do
    for i in "${!devices[@]}"; do
      if [[ $1 == $i ]]; then
        device="${devices[$i]}"
        return 0
      fi
    done
  done <<< $(getDevices)
}

# OS check
if [[ "$OSTYPE" == "linux-gnu" ]]; then
  binPath=~/Android/Sdk/tools/bin
  # Android Studio Version Check
  if [[ ! -d "~/Android/Sdk/tools" ]]; then
    # @^3.2
    emuPath=~/Android/Sdk/emulator
  else
    emuPath=~/Android/Sdk/tools
  fi
elif [[ "$OSTYPE" == "darwin"* ]]; then
  binPath=~/Library/Android/Sdk/tools/bin
  emuPath=~/Library/Android/Sdk/tools
else 
  echo "Script is unable to run, incompatible operating system. Quitting ...."
  exit 1
fi

# Constant
listAvd="$binPath/avdmanager list avd"

# Arguments guidance
if [[ $1 == "show" ]]; then
  pp_Devices
elif [[ $1 == "run" ]]; then
  if isDeviceValid "$2"; then
    (cd $emuPath && emulator -avd $2)
  else
    echo "The device name is invalid. To see the devices you have installed, run android-emulator show"
  fi
else
  echo "------------------------------------------------------------------------------------"
  echo "For future usues, you can use \`android-emulator show\` to show the available devices,"
  echo "you can also use \`andorid-emulator run <device_name>\` to launch the device."
  echo "------------------------------------------------------------------------------------"
  echo "This will show you your available devices and prompt you to choose one by entering it's [number]."
  pp_Devices
  read -r -p "Your device number: " number
  if [[ $number -lt $devicesLen ]] && [[ $number -gt -1 ]]; then
    getDevice $number
    (cd $emuPath && emulator -avd $device)
  else
    echo "The number you entered is out of index. Please, try again!"
  fi
fi