I am facing issue while obfuscating my app using proguard.
I am able to use proguard and it is generating mapping.txt when i am creating a new application in android studio, however mapping.txt is not being generated when i am trying to use proguard on a project migrated from eclipse to android studio.
Following is my proguard-rules.pro file
-dontobfuscate
-dontshrink
-keepdirectories
-keeppackagenames javax.mail.**
-keeppackagenames javax.activation.**
-keeppackagenames com.sun.mail.**
-keeppackagenames myjava.**
-keeppackagenames org.apache.harmony.**
-keeppackagenames mailcap.**
-keeppackagenames mimetypes.**
-keep class javamail.** {*;}
-keep class javax.mail.** {*;}
-keep class javax.activation.** {*;}
-keep class javax.mail.internet.** {*;}
-keep class com.sun.mail.dsn.** {*;}
-keep class com.sun.mail.handlers.** {*;}
-keep class com.sun.mail.smtp.** {*;}
-keep class com.sun.mail.util.** {*;}
-keep class javax.ws.rs.** { *; }
-keep class mailcap.** {*;}
-keep class mimetypes.** {*;}
-keep class myjava.awt.datatransfer.** {*;}
-keep class org.apache.harmony.awt.** {*;}
-keep class org.apache.harmony.misc.** {*;}
-dontwarn com.fasterxml.jackson.**
-dontwarn java.awt.**
-dontwarn java.beans.Beans
-dontwarn javax.security.**
-ignorewarnings
-printmapping build/outputs/mapping/release/mapping.txt