what is the difference between -keep class and -dontwarn

Question

Hey I\'m new with proGuard , I use it to protect my code from reverse engineering , but when I built my signed apk I got a lot of errors when I enabled proGuard ,I have googled

Answer 1

-dontwarn

Specifies not to warn about unresolved references and other important problems at all. The optional filter is a regular expression; ProGuard doesn't print warnings about classes with matching names. Ignoring warnings can be dangerous. For instance, if the unresolved classes or class members are indeed required for processing, the processed code will not function properly. Only use this option if you know what you're doing!

-keep class

Specifies classes and class members (fields and methods) to be preserved as entry points to your code. For example, in order to keep an application, you can specify the main class along with its main method. In order to process a library, you should specify all publicly accessible elements.

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