Programmer's Notebook

JBIG Android library published Table of Contents Design details Where it come from? Include the dependency into your gradle script Start to use it Please jump to jbig-android 's home page . 1 Design details jbig-android is just a JNI level wrapper of jbig-kit , so it inherited its License as GPL v3. If you are a newbie of JNI programming, you can refer my JNI tutorial . Basically, JNI part is the key of porting jbig-kit to android platform. Beside the core implementation of this project, the sample code pleased me the most. I tried to wrote it in an MVC way, which took me the most time, and it succeeds, Maybe I will use another post to describe this MVC paradigm and its apply in Android App. Of course, I learned this way and copy it from Chris Banes's sensational work philm . 2 Where it come from? About years ago, I met this problem, the format of hand write a signature in bank related system, like a POS. The customer sign in the screen(LED) ...

As an android developer, I always wanna hack awesome app to learn its design inside. The first step of that is to get the APK file itself, and the obvious way to do that is to extract it from our android phone. There are two ways to make that, both of them need no root privilege. 1. Use android adb backup command adb shell pm list packages adb backup -apk com.google.android.wearable.app dd if=backup.ab bs=1 skip=24 | python -c “import zlib,sys;sys.stdout.write(zlib.decompress(sys.stdin.read()))” | tar -xvf - 2. Use adb package management cmd  adb shell pm list packages  adb shell pm path com.google.android.wearable.app  adb pull /data/app/com.google.android.wearable.app-1.apk