where is the proguard mappings.txt file generated when using JACK?

Question

I have been trying to use the latest JACK and JILL build system to for my android project. I know that JACK process includes the proguard processing.

But after that i couldn't locate the mappings.txt file for back-tracking stack-trace of bugs provided on google play developer console.

Please help me LOCATE mappings.txt.

Another related question is if the shrinkingResources still works while JACK because shrinkingResources requires minifyEnabled true but JACK requires minifyEnabled false.

Project Config--

compileSdkVersion 24
buildToolsVersion "24.0.0"

classpath 'com.android.tools.build:gradle:2.1.2'

UPDATE--

Answer posted by T. Neidhart is NOT a working solution.

T. Neidhart · Answer 1 · 2016-07-05T09:47:29.377

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To enable obfuscation/shrinking with JACK you need to set minifyEnabled to true. It was unsupported in earlier versions, but now JACK has its own obfuscation and shrinking implementation (not using ProGuard at all) that can process some of the original ProGuard rules (for a complete list of supported options refer to Jack obfuscation and shrinking).

Once the configuration is properly setup, the mapping.txt file will be located in the same place as before: build/outputs/mapping/<buildtype>/mapping.txt

edited Jul 05 '16 at 09:47

answered Jul 05 '16 at 07:29

T. Neidhart

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can you show me your build.gradle with JACK enabled.. your solution is not working as i said in question. – Arnav M. Jul 05 '16 at 08:27
It probably depends on the buildToolsVersion you are using. In my project I use 23.0.2 with Android gradle plugin version 2.0+. – T. Neidhart Jul 05 '16 at 08:45
does it contains jackOptions { enabled true } – Arnav M. Jul 05 '16 at 08:54
This is for buildToolsVersion 24+. – T. Neidhart Jul 05 '16 at 08:59
so how you could use JACK? – Arnav M. Jul 05 '16 at 09:00
"useJack true" for older versions. – T. Neidhart Jul 05 '16 at 09:01
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/116445/discussion-between-arnav-m-and-t-neidhart). – Arnav M. Jul 05 '16 at 09:01
I updated the answer. When using newer plugin versions (2.2.0-alphaX) you might need to use a different way to enable obfuscation (i.e. not using minifyEnabled true). For versions up to 2.1.0 the way as described in the answer should be correct. – T. Neidhart Jul 05 '16 at 09:12
sorry..it doesn't provide answer to me ... all the latest tools are out of alpha/beta... and now i need mappings file.. – Arnav M. Jul 05 '16 at 09:55
Well have you actually tried to use minifyEnabled true? When I do that it just works for me. – T. Neidhart Jul 05 '16 at 10:00
it won't let me build because JACK itself do the proguard and it will double the process if i set minifyEnabled true. – Arnav M. Jul 05 '16 at 11:00
Maybe you can add the error message to the question. ProGuard can not run when Jack is enabled as no class files are involved anymore so I hardly doubt that the process is doubled. – T. Neidhart Jul 05 '16 at 11:02

score 0 · Accepted Answer · answered Aug 17 '16 at 09:26

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There is nowhere to find that mappings file as JACK internally process proguard and there are some issues pointed on android tools site while enabling JACK.

So for now not using JACK is the best option if you care tracing back exceptions in your apps.

answered Aug 17 '16 at 09:26

Arnav M.

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where is the proguard mappings.txt file generated when using JACK?

2 Answers2

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