Proguard app error

Question

I used proguard when exporting app on eclipse, logcat showed no errors, but when i run app i get following errors.

java.lang.NullPointerException
    at hn.<init>(Unknown Source)
    at hp.<init>(Unknown Source)
    at hc.a(Unknown Source)
    at hc.<init>(Unknown Source)
    at hb.<init>(Unknown Source)
    at hb.<init>(Unknown Source)
    at com.example.musicplayer.SongManager.c(Unknown Source)
    at com.example.musicplayer.SongManager.b(Unknown Source)
    at com.example.musicplayer.SongManager.e(Unknown Source)
    at jr.onClick(Unknown Source)
    at android.view.View.performClick(View.java:4247)
    at android.view.View$PerformClick.run(View.java:17728)
    etc ...

I used followin proguard configuration (found it here on stackoverflow don't remember where):

-injars      bin/classes
-injars      libs
-outjars     bin/classes-processed.jar
-libraryjars C:/eclipse/sdk/platforms/android-19/android.jar

-dontpreverify
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
-keepattributes *Annotation*

-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.view.View {
    public <init>(android.content.Context);
    public <init>(android.content.Context, android.util.AttributeSet);
    public <init>(android.content.Context, android.util.AttributeSet, int);
    public void set*(...);
}

-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.content.Context {
   public void *(android.view.View);
   public void *(android.view.MenuItem);
}

-keepclassmembers class **.R$* {
    public static <fields>;
}

And to use it I just uncommented in project.properties that line for proguard. I use API 19 compiler and I run app on Jelly Bean 4.3.1, and received errors above. Any help appreciated.

EDIT: Problem appears in Notification, when i press button on it, it fires intent to NotificationReceiver class (implementing BroadcastReceiver, declared in manifest), and error is on those buttons. I used Notification.Builder to create notification, and addAction to add those buttons.

Answer 1

Add this line to your proguard conf file, so your classes under com.example.musicplayer package won't be obfuscated.

-keep class com.example.musicplayer.** { *; }