Gradle Build failed with ProGuard enabled, missing classes.jar

Question

I'm getting the following error when trying to build a signed APK with ProGuard enabled:

Error:Execution failed for task ':app:packageRelease'. Unable to compute hash of D:\Work\Android\MyApp\app\build\intermediates\classes-proguard\release\classes.jar

I checked the path given, and there is no classes.jar file. Where can I get the .jar from?

check there is somewhere error in code or something missed or add here full error log. — Ando Masahashi, Sep 22 '15 at 10:37

score 0 · Answer 1 · edited May 23 '17 at 12:26

0

Check this question or just add

-keep public class com.google.android.gms.**

to your proguard rules.

edited May 23 '17 at 12:26

Community

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answered Sep 22 '15 at 10:39

Slonorib

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I actually saw that post and have those rules in my file.Adding the line you posted doesn't help. – Mr Pablo Sep 22 '15 at 10:41
Can you please explain why **android.gms** is important to OP's question specifically? – IgorGanapolsky Nov 02 '16 at 20:58

score 0 · Answer 2 · edited May 23 '17 at 10:27

0

Add these to your proguard-project.txt If you are using support libraries.

-dontwarn android.support.v7.**
-keep class android.support.v7.** { *; }
-keep interface android.support.v7.** { *; }

_{Credits to this post.}

edited May 23 '17 at 10:27

Community

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answered Sep 22 '15 at 11:22

frogatto

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Gradle Build failed with ProGuard enabled, missing classes.jar

2 Answers2