Better proguard config

This is the example output:

 [proguard] Ignoring unused library classes...
 [proguard]   Original number of library classes: 19805
 [proguard]   Final number of library classes:    176
 [proguard] Printing kept classes, fields, and methods...
 [proguard] Inlining subroutines...
 [proguard] Shrinking...
 [proguard] Removing unused program classes and class elements...
 [proguard]   Original number of program classes: 51
 [proguard]   Final number of program classes:    51
 [proguard] Optimizing (pass 1/5)...
 [proguard]   Number of finalized classes:                   8
 [proguard]   Number of unboxed enum classes:                1
 [proguard]   Number of vertically merged classes:           0   (disabled)
 [proguard]   Number of horizontally merged classes:         0   (disabled)
 [proguard]   Number of merged wrapper classes:              0   (disabled)
 [proguard]   Number of removed write-only fields:           0   (disabled)
 [proguard]   Number of privatized fields:                   0   (disabled)
 [proguard]   Number of inlined constant fields:             0   (disabled)
 [proguard]   Number of privatized methods:                  1
 [proguard]   Number of staticized methods:                  4
 [proguard]   Number of finalized methods:                   45
 [proguard]   Number of desynchronized methods:              0
 [proguard]   Number of simplified method signatures:        0
 [proguard]   Number of removed method parameters:           0
 [proguard]   Number of inlined constant parameters:         3
 [proguard]   Number of inlined constant return values:      0
 [proguard]   Number of inlined short method calls:          37
 [proguard]   Number of inlined unique method calls:         19
 [proguard]   Number of inlined tail recursion calls:        0
 [proguard]   Number of merged code blocks:                  0
 [proguard]   Number of variable peephole optimizations:     91
 [proguard]   Number of arithmetic peephole optimizations:   0   (disabled)
 [proguard]   Number of cast peephole optimizations:         0   (disabled)
 [proguard]   Number of field peephole optimizations:        0
 [proguard]   Number of branch peephole optimizations:       35
 [proguard]   Number of object peephole optimizations:       0
 [proguard]   Number of string peephole optimizations:       12
 [proguard]   Number of math peephole optimizations:         0
 [proguard]   Number of simplified instructions:             10
 [proguard]   Number of removed instructions:                20
 [proguard]   Number of removed local variables:             4
 [proguard]   Number of removed exception blocks:            0
 [proguard]   Number of optimized local variable frames:     50
 [proguard] Shrinking...
 [proguard] Removing unused program classes and class elements...
 [proguard]   Original number of program classes: 51
 [proguard]   Final number of program classes:    48
 [proguard] Optimizing (pass 2/5)...
 [proguard]   Number of finalized classes:                   0
 [proguard]   Number of unboxed enum classes:                0
 [proguard]   Number of vertically merged classes:           0   (disabled)
 [proguard]   Number of horizontally merged classes:         0   (disabled)
 [proguard]   Number of merged wrapper classes:              0   (disabled)
 [proguard]   Number of removed write-only fields:           0   (disabled)
 [proguard]   Number of privatized fields:                   0   (disabled)
 [proguard]   Number of inlined constant fields:             0   (disabled)
 [proguard]   Number of privatized methods:                  0
 [proguard]   Number of staticized methods:                  0
 [proguard]   Number of finalized methods:                   0
 [proguard]   Number of desynchronized methods:              0
 [proguard]   Number of simplified method signatures:        0
 [proguard]   Number of removed method parameters:           0
 [proguard]   Number of inlined constant parameters:         0
 [proguard]   Number of inlined constant return values:      0
 [proguard]   Number of inlined short method calls:          0
 [proguard]   Number of inlined unique method calls:         0
 [proguard]   Number of inlined tail recursion calls:        0
 [proguard]   Number of merged code blocks:                  0
 [proguard]   Number of variable peephole optimizations:     9
 [proguard]   Number of arithmetic peephole optimizations:   0   (disabled)
 [proguard]   Number of cast peephole optimizations:         0   (disabled)
 [proguard]   Number of field peephole optimizations:        0
 [proguard]   Number of branch peephole optimizations:       0
 [proguard]   Number of object peephole optimizations:       0
 [proguard]   Number of string peephole optimizations:       3
 [proguard]   Number of math peephole optimizations:         0
 [proguard]   Number of simplified instructions:             0
 [proguard]   Number of removed instructions:                94
 [proguard]   Number of removed local variables:             1
 [proguard]   Number of removed exception blocks:            0
 [proguard]   Number of optimized local variable frames:     0

Author: patrickfav

proguard-rules.pro

@@ -3,7 +3,7 @@
 -ignorewarnings
 -verbose
 
--keepattributes *Annotation*,EnclosingMethod, InnerClasses, Exceptions, Signature, SourceFile, LineNumberTable
+-keepattributes *Annotation*,EnclosingMethod, InnerClasses, Exceptions, Signature, SourceFile, LineNumberTable, MethodParameters
 -renamesourcefileattribute SourceFile
 -optimizationpasses 5
 -overloadaggressively
@@ -36,6 +36,5 @@
 
 
 # keep all public classes in main package
--keep class at.favre.lib.bytes.** { public *; }
-
--keep class sun.misc.Unsafe { *; }
+-keep public class at.favre.lib.bytes.** { public *; }
+-keep interface at.favre.lib.bytes.** { <methods>; }