BobStore/tools/png-pre-compress
Hans-Christoph Steiner a27d2804f3 manually use aapt singleCrunch for reproducible builds
PNG crunching is not a deterministic process, especially the way aapt does
it.  This makes the F-Droid builds not reproducible.  The easy solution to
this is to pre-crunch the PNGs and commit them to git.  It also makes the
final APK a tiny amount smaller, for whatever reason.

https://medium.com/@duhroach/smaller-pngs-and-android-s-aapt-tool-4ce38a24019d
2017-09-04 22:20:55 +02:00

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#!/usr/bin/env sh
set -e
set -x
for f in `find $(dirname $0)/../app/src/ -type f -name \*.png`; do
echo $f | grep -Eo '\.9\.png$' && continue # do not optimized 9-patch, it breaks them
tmpfile=$(mktemp)
aapt singleCrunch -v -i $f -o $tmpfile
mv $tmpfile $f
done