android-emu.sh

#!/bin/bash
# (@) start-android
# If the emulator command exists on this device, displays a list of emulators
# and prompts the user to start one
# Original source: https://stackoverflow.com/a/41437075/3896616

function assert_sdk {
    command -v $1 > /dev/null || {
        echo >&2 "Executable \"$1\" not present in your system.";
        echo "Did you installed android sdk? Aborting.";
        exit 1;
    }
}

# Fix Android Emulator
# https://stackoverflow.com/questions/42554337/cannot-launch-avd-in-emulatorqt-library-not-found
function emulator2 { (cd "$(dirname "$(which emulator)")" && ./emulator "$@";) }

assert_sdk emulator

# Gather emulators that exist on this computer
devices=( $(emulator -list-avds 2>&1 ) )

# Display list of emulators
echo "Available Emulators
----------------------------------------"
N=1
for device in ${devices[@]}
do
  echo "$N) $device"
  let N=$N+1
done

# Request an emulator to start
read -p "
Choose an emulator: " num

# If the input is valid, launch our emulator on a separate PID and exit
if [ $num -lt $N ] && [ $num -gt 0 ];
then
  device=${devices[$num-1]}
  emulator2 "@$device" & #/dev/null 2>&1 &
  exit 0
else
  echo "Invalid Entry : $num"
  exit 1
fi