When I export an apk from eclipse, it compresses all of the png images. For example, one 4.6 KB png became 2.15 KB inside the apk. However I prefer to optimize png files using tinypng before the apk is built, which makes much smaller files. The same 4.6 KB png became 746 B using tinypng. When building the apk, compression ran on my 746 B png making it 1.6 KB.
Is there any way to disable this optimization for future builds?
In your project build.xml ANT file you can override the -crunch task of the SDK, thus avoiding PNG compression, as you previously compressed them:
<target name="-crunch">
<echo message="Skipping PNG optimization"/>
</target>