Android app too heavy
<p>can we delete android.jar from the signed apk file as explained by the author here - </p>

<p><a href="http://michaelpardo.com/2010/04/one-way-to-reduce-your-apk-file-size/" rel="nofollow">http://michaelpardo.com/2010/04/one-way-to-reduce-your-apk-file-size/</a></p>

<p>I want to be sure before trying. I have some 40 png files making my app very heavy. I also have some 20 music files which will make it even heavier. Any suggestion for compressing png and .mp3 files?</p>
