为什么Android Studio中的Java文件不同于Java文件从classes.dex中提取

Question

我在android studio上有一个应用程序，当我从apk提取Java文件时有apk，为什么它们不是android studio上的相同代码，为什么？

Answer 1

Your compiled java files usually goes through a process called obfuscation by using an app called proguard .

Here's what obfuscation explained by wiki:

Obfuscation is the obscuring of the intended meaning of communication by making the message difficult to understand, usually with confusing and ambiguous language. The obfuscation might be either unintentional or intentional (although intent usually is connoted), and is accomplished with circumlocution (talking around the subject), the use of jargon (technical language of a profession), and the use of an argot (ingroup language) of limited communicative value to outsiders.

Since it is already obfuscated, when you reverse the bytecode back to a java file, it will be different than the actual file. However, coding structure and such will remain the same.