APK to JAR (and DEX to JAR) — How to Convert and Read Android Code
Convert an APK or DEX file to a JAR with dex2jar, then read the Java source online — plus what the conversion does and its limits.
What "APK to JAR" Actually Means
Step 1: Convert with dex2jar (Online Alternative First)
Step 2: Read the Code Online
Extract classes.dex Manually (Optional)
Limits and Gotchas
Summary