Error while generating signed apk

Question

I got old project and keystore file , but when I am trying to create signed APK it give following error.

   [2013-05-19 12:36:02 - xxxxxxx] Proguard returned with error code 1. See console
   [2013-05-19 12:36:02 - xxxxxxx] Unable to access jarfile /Users/muhammadali/Documents/development
   [2013-05-19 12:36:12 - xxxxxx] Proguard returned with error code 1. See console
    [2013-05-19 12:36:12 - xxxxxx] Unable to access jarfile /Users/muhammadali/Documents/development

Please help why i cant generate the APK file.

Answer 1

Alright, a few things:

1. Make sure your Proguard is version 4.8 and above. There is a known bug that caused that in 4.7.

2. Assuming you are running the latest version of Proguard and it is still occuring, go to [android-sdk-folder]/sdk/tools/proguard/bin/proguard.sh and make the following changes:

   Change:

   java -jar $PROGUARD_HOME/lib/proguard.jar "$@"
   

   To:

   java -jar "$PROGUARD_HOME/lib/proguard.jar" "$@"
   

3. Add this line to your project.properties file in your application folder.

   proguard.config=proguard.cfg
   

4. Create a proguard.cfg file in your application folder.

5. Populate your proguard.cfg file with something like below (modify as needed).

   -optimizationpasses 5
   -dontusemixedcaseclassnames
   -dontskipnonpubliclibraryclasses
   -dontpreverify
   -verbose
   -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
   
   -keep public class * extends android.app.Activity
   -keep public class * extends android.app.Application
   -keep public class * extends android.app.Service
   -keep public class * extends android.content.BroadcastReceiver
   -keep public class * extends android.content.ContentProvider
   -keep public class * extends android.app.backup.BackupAgentHelper
   -keep public class * extends android.preference.Preference
   -keep public class com.android.vending.licensing.ILicensingService
   
   -keepclasseswithmembernames class * {
       native <methods>;
   }
   
   -keepclasseswithmembers class * {
       public <init>(android.content.Context, android.util.AttributeSet);
   }
   
   -keepclasseswithmembers class * {
       public <init>(android.content.Context, android.util.AttributeSet, int);
   }
   
   -keepclassmembers class * extends android.app.Activity {
      public void *(android.view.View);
      public void onSearchButtonClicked(java.lang.String);
   }
   
   -keepclassmembers enum * {
       public static **[] values();
       public static ** valueOf(java.lang.String);
   }
   
   -keep class * implements android.os.Parcelable {
      public static final android.os.Parcelable$Creator *;
   }
   

6. Turn Project -> Build Automatically off Go to menu Project -> Clean... and clean your project first.

Good luck! I'll be happy to help out as you try all the steps above and go through it.