imports image assets from a source directory into the res directory of an Android project. My designer gave me a directory of dpi-sized assets and this is an automated way to get them into the project quickly. The format this script expects is <nameoffile>_<densitymodifier>.<extension>. The files will be copied into the user-specified res folder…

import_image_assets.py

import os, sys, shutil

legalResolutionModifiers = ["ldpi","mdpi","hdpi","xhdpi","xxhdpi","xxxhdpi"]

# check inputs
if len(sys.argv) != 3:
    print "illegal usage"
    sys.exit()

sourceFolder = sys.argv[1]
destination = sys.argv[2]

if not os.path.isdir(sourceFolder):
    print "source dir invalid"

if not os.path.isdir(destination):
    print "destination dir invalid"

files = []
for (dirpath, dirnames, filenames) in os.walk(sourceFolder):
    files.extend(filenames)
    break

for f in files:
    title, ext = os.path.splitext(os.path.basename(f))
    dpiModBegin = title.rfind("_")
    rawTitle = title[:dpiModBegin]
    densityMod = title[dpiModBegin+1:]
    if densityMod in legalResolutionModifiers:
        densityFolder = "drawable-"+densityMod
        target = os.path.join(destination, densityFolder, rawTitle + ext)
        source = os.path.join(sourceFolder, f)
        shutil.copyfile(source,target)
        # print source + " -> " + target