Generate Android assets for different pixel density

generate_android_assets.sh

#---------------------------------------------------------------
# Given an xxxhdpi image, this script
# creates different dpis resources and the necessary folders
# if they don't exist
#
# Place this script, as well as the source image, inside res
# folder and execute it passing the image filename as argument
#
# Example:
# ./drawables_dpis_creation.sh my_cool_xxhdpi_image.png
#
# Copyright (c) 2016 Ricardo Romao.
# This free software comes with ABSOLUTELY NO WARRANTY and
# is distributed under GNU GPL v3 license. 
#
# Source: https://github.com/Kishanjvaghela/drawable-converter/blob/master/converter.sh
# Help: https://developer.android.com/training/multiscreen/screendensities
#---------------------------------------------------------------

if [ $# -eq 0 ]; then
    echo "No arguments supplied"
else if [ -f "$1" ]; then
    echo " Creating different dimensions (dips) of "$1" ..."
    mkdir -p drawable-xxxhdpi
    mkdir -p drawable-xxhdpi
    mkdir -p drawable-xhdpi
    mkdir -p drawable-hdpi
    mkdir -p drawable-mdpi
   
	convert $1 -resize 75% drawable-xxhdpi/$1
	convert $1 -resize 50% drawable-xhdpi/$1
	convert $1 -resize 38% drawable-hdpi/$1
	convert $1 -resize 25% drawable-mdpi/$1
	mv $1 drawable-xxxhdpi/$1
    
echo " Done"
else
    echo "$1 not found."
fi
fi