Proguard with OrmLite on Android

Question

How should I use proguard with ormlite library on Android?

Trying this:

-keep class com.j256.**
-keepclassmembers class com.j256.**
-keep enum com.j2         


        

Answer 1

In my case this did the trick:

-keepattributes SourceFile,LineNumberTable,Signature,InnerClasses,*Annotation*

and

-keepclassmembers class * {public <init>(android.content.Context);}
-keep class com.j256.** { *; }

With obfucation and optimizations.

Answer 2

A small addition for the latest version OrmLite 5.

You may want to add these rows to hide some new warnings:

-dontwarn com.j256.ormlite.android.**
-dontwarn com.j256.ormlite.logger.**
-dontwarn com.j256.ormlite.misc.**

Warnings are like these:

Warning:com.j256.ormlite.android.OrmliteTransactionalProcessor: can't find referenced class javax.lang.model.SourceVersion

Warning:com.j256.ormlite.logger.Slf4jLoggingLog: can't find referenced class org.slf4j.LoggerFactory

Warning:com.j256.ormlite.misc.JavaxPersistenceImpl: can't find referenced class javax.persistence.Column

Answer 3

The accepted answer was not enough for my case, so I enhanced it and this is what I ended up with:

# OrmLite uses reflection
-keep class com.j256.**
-keepclassmembers class com.j256.** { *; }
-keep enum com.j256.**
-keepclassmembers enum com.j256.** { *; }
-keep interface com.j256.**
-keepclassmembers interface com.j256.** { *; }

# Keep the helper class and its constructor
-keep class * extends com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper
-keepclassmembers class * extends com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper {
  public <init>(android.content.Context);
}

# Keep the annotations
-keepattributes *Annotation*

# Keep all model classes that are used by OrmLite
# Also keep their field names and the constructor
-keep @com.j256.ormlite.table.DatabaseTable class * {
    @com.j256.ormlite.field.DatabaseField <fields>;
    @com.j256.ormlite.field.ForeignCollectionField <fields>;
    # Add the ormlite field annotations that your model uses here
    <init>();
}

Answer 4

In addittion to default necessary for reflection:

# OrmLite uses reflection
-keep class com.j256.**
-keepclassmembers class com.j256.** { *; }
-keep enum com.j256.**
-keepclassmembers enum com.j256.** { *; }
-keep interface com.j256.**
-keepclassmembers interface com.j256.** { *; }

I needed to keep all my Entity classes:

-keep class com.example.db.Entities.** { *; }

Otherwise entity classes are stripped out. I use predefined DB(generated earlier).

Is there an easier/better way to obfuscate. Maybe I'm keeping too many classes?

Answer 5

I don't have the solution but here are a couple of references to help:

• Proguard support request around ORMLite
• ORMLite proguard discussion #1
• ORMLite proguard discussion #2

You may be missing:

-keepclassmembers class * { 
  public <init>(android.content.Context); 
} 

and/or

-keepattributes *Annotation*

Answer 6

I've came up with such solution (maybe will work for somebody too).

Made such changes to proguard.cfg:

• Added -dontobfuscate option

• Appended ,!code/allocation/variable to -optimization option

APK file size using such configuration reduced from 580 kB to 250 kB.

Though, no obfuscation is performed.