android-resizer

#!/bin/bash

# OS X Android icon resizer
# Resizes icon and puts in corresponding folders
# Usage: android-resizer [image path] [mdpi size] [out dir]
# If no out directory supplied, uses directory from image path

if [[ $# -lt 2 ]]
then
	echo "Error: Please supply image file path and mdpi size"
	exit 1
fi

mdpi=$2
hdpi=$(echo "$mdpi * 1.5" | bc -l)
xhdpi=$(echo "$mdpi * 2" | bc -l)
xxhdpi=$(echo "$mdpi * 3" | bc -l)
xxxhdpi=$(echo "$mdpi * 4" | bc -l)

outdir=$(dirname "$1")
if [[ $# -eq 3 ]]
then
	outdir=$3
fi
outdir="$outdir/android"

mkdir "$outdir"
mkdir "$outdir/drawable-mdpi/"
mkdir "$outdir/drawable-hdpi/"
mkdir "$outdir/drawable-xhdpi/"
mkdir "$outdir/drawable-xxhdpi/"
mkdir "$outdir/drawable-xxxhdpi/"

sips -Z "$mdpi" "$1" --out "$outdir/drawable-mdpi/"
sips -Z "$hdpi" "$1" --out "$outdir/drawable-hdpi/"
sips -Z "$xhdpi" "$1" --out "$outdir/drawable-xhdpi/"
sips -Z "$xxhdpi" "$1" --out "$outdir/drawable-xxhdpi/"
sips -Z "$xxxhdpi" "$1" --out "$outdir/drawable-xxxhdpi/"