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I got a stacktrace from the crashreporting system and it is obfuscated, like
... Failed resolution of: Lru/test/c/b/a; ...
I have a mapping file.
How to deobfuscate this stacktrace using mapping.txt?
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Choose an app. Select Android vitals > Deobfuscation files from the left menu. Click Upload next to a version of your software. Upload the ProGuard mapping file for your app's version.
R8 retrace is a tool for obtaining the original stack trace from an obfuscated stack trace. The stack trace is reconstructed by matching class and method names in a mapping file to their original definitions.
A mapping file contains the original names and the obfuscated names of classes, fields, and methods. ProGuard can write out such a file while obfuscating an application or a library, with the option -printmapping . ReTrace requires the mapping file to restore obfuscated stack traces to more readable versions.
Get deobfuscated crash stacktrace from your app page
Upload your mapping.txt to your app PlayStore page with the following steps:
After doing so, to view your deobfuscated crash stack traces:
You can check this link for more details.
Deobfuscate a piece of stacktrace
To convert the code by yourself use the retrace script (retrace.bat on Windows; retrace.sh on Mac/Linux). It is located in the ~/Android/sdk/tools/proguard/bin/ directory. The script takes the mapping.txt file and your stack trace, producing a new, readable stack trace. The syntax for using the retrace tool is:
retrace.bat|retrace.sh [-verbose] mapping.txt [<stacktrace_file>]
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