Develop Reference

how to obfuscation android application with ProGuard

I watched this link and My application use google play services. I added this lines
-keep class * extends java.util.ListResourceBundle {
protected Object[][] getContents();
}
-keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable {
public static final *** NULL;
}
-keepnames #com.google.android.gms.common.annotation.KeepName class *
-keepclassmembernames class * {
#com.google.android.gms.common.annotation.KeepName *;
}
-keepnames class * implements android.os.Parcelable {
public static final ** CREATOR;
}
but when i export my application gives this error:
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Proguard returned with error code 1. See console
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.fitness.service.FitnessSensorService$a: can't find referenced class android.app.AppOpsManager
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.fitness.service.FitnessSensorService$a: can't find referenced class android.app.AppOpsManager
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.internal.af: can't find referenced method 'boolean isAttachedToWindow()' in class android.view.View
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.internal.an$2: can't find referenced method 'void evaluateJavascript(java.lang.String,android.webkit.ValueCallback)' in class android.webkit.WebView
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: com.google.android.gms.internal.gu: can't find referenced method 'void evaluateJavascript(java.lang.String,android.webkit.ValueCallback)' in class android.webkit.WebView
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] You should check if you need to specify additional program jars.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: there were 11 unresolved references to classes or interfaces.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] You may need to specify additional library jars (using '-libraryjars').
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Warning: there were 3 unresolved references to program class members.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Your input classes appear to be inconsistent.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] You may need to recompile them and try again.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] Alternatively, you may have to specify the option
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] '-dontskipnonpubliclibraryclassmembers'.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] java.io.IOException: Please correct the above warnings first.
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] at proguard.Initializer.execute(Initializer.java:321)
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] at proguard.ProGuard.initialize(ProGuard.java:211)
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] at proguard.ProGuard.execute(ProGuard.java:86)
[2015-02-20 23:15:04 - TurkiyeYollarindaTrafikOlaylari] at proguard.ProGuard.main(ProGuard.java:492)
I'm new on using proguard. I will publish my first android application. I dont understand these errors so any help?

Might it be that you are using 3rd party libraries in your project that you forgot to include in the proguard.config using the '-libraryjars' tag...?

Android - app export errors with proguard and google play services

I have added the latest Google Play Services to the project and now proguard is giving
me many warnings:
[2014-07-31 17:21:50 - MyApp] Proguard returned with error code 1. See console
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.cast.TextTrackStyle: can't find referenced class android.view.accessibility.CaptioningManager$CaptionStyle
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.common.SupportErrorDialogFragment: can't find referenced method 'void setShowsDialog(boolean)' in class com.google.android.gms.common.SupportErrorDialogFragment
[2014-07-31 17:21:50 - MyApp] Warning: com.google.android.gms.common.api.d: can't find referenced method 'android.support.v4.app.FragmentActivity getActivity()' in class com.google.android.gms.common.api.d
[2014-07-31 17:21:50 - MyApp] You should check if you need to specify additional program jars.
[2014-07-31 17:21:50 - MyApp] Warning: there were 9 unresolved references to classes or interfaces.
[2014-07-31 17:21:50 - MyApp] You may need to specify additional library jars (using '-libraryjars').
[2014-07-31 17:21:50 - MyApp] Warning: there were 2 unresolved references to program class members.
[2014-07-31 17:21:50 - MyApp] Your input classes appear to be inconsistent.
[2014-07-31 17:21:50 - MyApp] You may need to recompile them and try again.
[2014-07-31 17:21:50 - MyApp] Alternatively, you may have to specify the option
[2014-07-31 17:21:50 - MyApp] '-dontskipnonpubliclibraryclassmembers'.
[2014-07-31 17:21:50 - MyApp] java.io.IOException: Please correct the above warnings first.
[2014-07-31 17:21:50 - MyApp] at proguard.Initializer.execute(Initializer.java:321)
[2014-07-31 17:21:50 - MyApp] at proguard.ProGuard.initialize(ProGuard.java:211)
[2014-07-31 17:21:50 - MyApp] at proguard.ProGuard.execute(ProGuard.java:86)
[2014-07-31 17:21:50 - MyApp] at proguard.ProGuard.main(ProGuard.java:492)
I have tried adding
-dontwarn com.google.android.gms.*
-keep class android.support.v4.** { *; }
to the proguard configuration fil but with no luck. I am targeting android 17 (4.2.2) in my app and the min SDK version is 8 (2.2 I think).
Any help solving this error will be appreciated.

Make sure you have setup your project with Android 4.4.2 and you have "include android- support-v13.jar". I have the same problem but it's fixed now.

Did you add:
-keep class * extends java.util.ListResourceBundle {
protected Object[][] getContents();
}
-keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable {
public static final *** NULL;
}
-keepnames #com.google.android.gms.common.annotation.KeepName class *
-keepclassmembernames class * {
#com.google.android.gms.common.annotation.KeepName *;
}
-keepnames class * implements android.os.Parcelable {
public static final ** CREATOR;
}
In your Proguard?
http://developer.android.com/google/play-services/setup.html

Seems the google play service jar is referencing some classes from android-support-v13.jar.
So adding following line in proguard-project.txt will solve the problem:
-libraryjars <ANDROID_SDK_PATH>/extras/android/support/v13/android-support-v13.jar
You need to download this jar using Android SDK manager.

Trying to get proguard to work but it always fails

Please don't close this as a duplicate!
I have tried upgrading to proguard 4.11
I have tried adding my the libraries I use and the libraries the libraries i use use (does that make sense :O)
I have tried adding -keep class com.google.** and keeping other classes
I have tried -dontwarn fi.foyt.*
Here are the related files:
proguard-project.txt
# To enable ProGuard in your project, edit project.properties
# to define the proguard.config property as described in that file.
#
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in ${sdk.dir}/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the ProGuard
# include property in project.properties.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# Add any project specific keep options here:
-libraryjars libs/android-support-v4.jar
-libraryjars libs/crashlytics.jar
-libraryjars libs/libGoogleAnalyticsServices.jar
-libraryjars other/easyfoursquare4android/easyFoursquare4Android/bin/easyfousquareactivity.jar
-libraryjars other/foursquare-android-oauth/foursquare-oauth-library/bin/foursquare-oauth-library.jar
-libraryjars other/easyfoursquare4android/easyFoursquare4Android/libs/foursquare-api-1.0.2.jar
-libraryjars other/easyfoursquare4android/easyFoursquare4Android/libs/gson-2.2.1.jar
#-keep class com.google.** { *; }
#-keep class fi.foyt.foursquare.** { *; }
#-keep class javax.** { *; }
#-keep class org.** { *; }
#-dontwarn fi.foyt.*
#-keep class fi.foyt.**
#-keep public class android.content.Context
#-keep public interface fi.foyt.**
#-keep public class fi.foyt.**
#-dontwarn android.support.v4.**
#-keep class java.lang.reflect.**
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
project.properties
# This file is automatically generated by Android Tools.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
#
# This file must be checked in Version Control Systems.
#
# To customize properties used by the Ant build system edit
# "ant.properties", and override values to adapt the script to your
# project structure.
#
# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
# Project target.
target=android-19
android.library.reference.1=other/foursquare-android-oauth/foursquare-oauth-library
android.library.reference.2=other/easyfoursquare4android/easyFoursquare4Android
Related console log: (click me for full log)
[2014-03-26 01:25:30 - MyAppName] Note: duplicate definition of library class [com.google.gson.JsonSerializationContext]
[2014-03-26 01:25:30 - MyAppName] Reading library jar [/Users/shereef/android-sdks/platforms/android-19/android.jar]
[2014-03-26 01:25:31 - MyAppName] Note: there were 1486 duplicate class definitions.
[2014-03-26 01:25:31 - MyAppName] Initializing...
[2014-03-26 01:25:31 - MyAppName] (http://proguard.sourceforge.net/manual/troubleshooting.html#duplicateclass)
[2014-03-26 01:25:31 - MyAppName] Note: the configuration refers to the unknown class 'com.google.vending.licensing.ILicensingService'
[2014-03-26 01:25:31 - MyAppName] Note: the configuration refers to the unknown class 'com.android.vending.licensing.ILicensingService'
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions$Builder
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchServiceFactory
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchService
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions$Builder
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchServiceFactory
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchService
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchService
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Note: android.support.v4.text.ICUCompatIcs: can't find dynamically referenced class libcore.icu.ICU
[2014-03-26 01:25:32 - MyAppName] Note: com.google.gson.internal.UnsafeAllocator: can't find dynamically referenced class sun.misc.Unsafe
[2014-03-26 01:25:32 - MyAppName] Note: there were 2 references to unknown classes.
[2014-03-26 01:25:32 - MyAppName] You should check your configuration for typos.
[2014-03-26 01:25:32 - MyAppName] (http://proguard.sourceforge.net/manual/troubleshooting.html#unknownclass)
[2014-03-26 01:25:32 - MyAppName] Warning: there were 35 unresolved references to classes or interfaces.
[2014-03-26 01:25:32 - MyAppName] Note: there were 2 unresolved dynamic references to classes or interfaces.
[2014-03-26 01:25:32 - MyAppName] You should check if you need to specify additional program jars.
[2014-03-26 01:25:32 - MyAppName] (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclass)
[2014-03-26 01:25:32 - MyAppName] You may need to add missing library jars or update their versions.
[2014-03-26 01:25:32 - MyAppName] If your code works fine without the missing classes, you can suppress
[2014-03-26 01:25:32 - MyAppName] the warnings with '-dontwarn' options.
[2014-03-26 01:25:32 - MyAppName] (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedclass)
[2014-03-26 01:25:32 - MyAppName] java.io.IOException: Please correct the above warnings first.
[2014-03-26 01:25:32 - MyAppName] at proguard.Initializer.execute(Initializer.java:369)
[2014-03-26 01:25:32 - MyAppName] at proguard.ProGuard.initialize(ProGuard.java:211)
[2014-03-26 01:25:32 - MyAppName] at proguard.ProGuard.execute(ProGuard.java:86)
[2014-03-26 01:25:32 - MyAppName] at proguard.ProGuard.main(ProGuard.java:483)
[2014-03-26 01:25:32 - MyAppName] Proguard returned with error code 1. See console
[2014-03-26 01:25:32 - MyAppName] Note: there were 1486 duplicate class definitions.
[2014-03-26 01:25:32 - MyAppName] (http://proguard.sourceforge.net/manual/troubleshooting.html#duplicateclass)
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions$Builder
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchServiceFactory
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchService
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions$Builder
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.FetchOptions
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchServiceFactory
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchService
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPMethod
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.URLFetchService
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.api.io.GAEIOHandler: can't find referenced class com.google.appengine.api.urlfetch.HTTPResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletRequest
[2014-03-26 01:25:32 - MyAppName] Warning: fi.foyt.foursquare.example.AuthenticationExample: can't find referenced class javax.servlet.http.HttpServletResponse
[2014-03-26 01:25:32 - MyAppName] Warning: there were 35 unresolved references to classes or interfaces.
[2014-03-26 01:25:32 - MyAppName] You may need to add missing library jars or update their versions.
[2014-03-26 01:25:32 - MyAppName] If your code works fine without the missing classes, you can suppress
[2014-03-26 01:25:32 - MyAppName] the warnings with '-dontwarn' options.
[2014-03-26 01:25:32 - MyAppName] (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedclass)
[2014-03-26 01:25:32 - MyAppName] java.io.IOException: Please correct the above warnings first.
[2014-03-26 01:25:32 - MyAppName] at proguard.Initializer.execute(Initializer.java:369)
[2014-03-26 01:25:32 - MyAppName] at proguard.ProGuard.initialize(ProGuard.java:211)
[2014-03-26 01:25:32 - MyAppName] at proguard.ProGuard.execute(ProGuard.java:86)
[2014-03-26 01:25:32 - MyAppName] at proguard.ProGuard.main(ProGuard.java:483)
[2014-03-26 01:25:32 - EasyFousquareActivity] Using default Build Tools revision 19.0.3
Check my proguard-project.txt I have commented the lines I have tried but didn't make sense

Some classes like com.google.appengine.api.urlfetch.HTTPMethod are missing from your libraries. Apparently, your application doesn't use them anyway, so you can tell ProGuard it's okay. For instance:
-dontwarn fi.foyt.foursquare.**
-dontnote libcore.icu.ICU
-dontnote sun.misc.Unsafe
See the ProGuard manual > Troubleshooting > Warning: can't find referenced class.
Furthermore, you shouldn't specify -injars or -libraryjars options in your configuration file. The Ant/Eclipse/Gradle build process already automatically specifies all the necessary -injars, -outjars, and -libraryjars for you, based on the contents of your project.
See the ProGuard manual > Troubleshooting > Note: duplicate definition of program/library class

Build Google SDK example with Eclipse with release mode

I try to build Google Drive SDK examples in Eclipse v22.01:
(The example website is as follows:)
https://developers.google.com/drive/quickstart-android
When I used debug build,it builded fine and executed fine on my table device.
However, when I tried to build it on release mode, I failed.
My process is as follows:
1. Go to "File"->"Export"
2. Create private keystore (This step succeeded.)
3. Build apk
I've checked the post Update your Proguard and downloaded and replaced jars in Proguard
I also checked the postCheck the '"Android Private Libraries' and checked items on "Order and Export" tab. But Still failed.
[Edit 1] I found the solution.
Just Uncheck the 'Drive API' (See the picture for reference)
(I am not sure if 'Android Dependencies' is needed or not. Maybe this could also be unchecked.)
I also add '-dontwarn com.google.**' to 'proguard-android.txt'
And then it worked.
Here are the errors messages I got:
[2013-07-24 12:03:43 - MainActivity] Proguard returned with error code 1. See console
[2013-07-24 12:03:43 - MainActivity] Note: there were 1081 duplicate class definitions.
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$color
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$drawable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$color
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$color
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$drawable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$drawable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$drawable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$drawable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.internal.aa: can't find referenced class com.google.android.gms.R$string
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.maps.GoogleMapOptions: can't find referenced class com.google.android.gms.R
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.maps.GoogleMapOptions: can't find referenced class com.google.android.gms.R$styleable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.maps.GoogleMapOptions: can't find referenced class com.google.android.gms.R$styleable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.maps.model.CameraPosition: can't find referenced class com.google.android.gms.R
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.maps.model.CameraPosition: can't find referenced class com.google.android.gms.R$styleable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.android.gms.maps.model.CameraPosition: can't find referenced class com.google.android.gms.R$styleable
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$Cell: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$Cell: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$Cell: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.cache.Striped64$Cell: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.primitives.UnsignedBytes$LexicographicalComparatorHolder$UnsafeComparator$1: can't find referenced class sun.misc.Unsafe
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.util.concurrent.ServiceManager: can't find referenced class javax.inject.Inject
[2013-07-24 12:03:43 - MainActivity] Warning: com.google.common.util.concurrent.ServiceManager: can't find referenced class javax.inject.Singleton
[2013-07-24 12:03:43 - MainActivity] Warning: there were 67 unresolved references to classes or interfaces.
[2013-07-24 12:03:43 - MainActivity] You may need to add missing library jars or update their versions.
[2013-07-24 12:03:43 - MainActivity] If your code works fine without the missing classes, you can suppress
[2013-07-24 12:03:43 - MainActivity] the warnings with '-dontwarn' options.
[2013-07-24 12:03:43 - MainActivity] java.io.IOException: Please correct the above warnings first.
[2013-07-24 12:03:43 - MainActivity] at proguard.Initializer.execute(Initializer.java:330)
[2013-07-24 12:03:43 - MainActivity] at proguard.ProGuard.initialize(ProGuard.java:212)
[2013-07-24 12:03:43 - MainActivity] at proguard.ProGuard.execute(ProGuard.java:87)
[2013-07-24 12:03:43 - MainActivity] at proguard.ProGuard.main(ProGuard.java:484)

I found the answer, Please refer the "Edit 1" part.
Hope this would help anyone who got the same problem.

From your screenshot (you have the google-play-services.jar), it looks like project isn't being built correct and this will only lead to more issues in the future.
Based on the link you provided, https://developers.google.com/drive/quickstart-android that documentation Does tell you to just use the jar.
However, there are more complete instructions at https://developer.android.com/google/play-services/setup.html
Here it instructs to
use the library project at /extras/google/google_play_services/libproject/google-play-services_lib/
make proguard entries
modify your AndroidManifest.xml

Proguard exception while creating release android signed apk

I am using Google API for Google authentication in our project, but while making a release signed APK, we are facing some warnings such that we are not able to generate the signed APK. Please point out where the actual problem is.
[2013-06-01 10:32:01 - Proguard returned with error code 1. See console
[2013-06-01 10:32:01 - Note: there were 366 duplicate class definitions.
[2013-06-01 10:32:01 - Warning: library class android.net.http.AndroidHttpClient extends or implements program class org.apache.http.client.HttpClient
[2013-06-01 10:32:01 - Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R
[2013-06-01 10:32:01 - Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.auth.GoogleAuthUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can'tfind referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class com.google.android.gms.R$string
[2013-06-01 10:32:01 - Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$RemoteRequest: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$RemoteRequest: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$RemoteRequest: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 -Warning: com.google.api.services.tasks.v1.Tasks$RemoteRequest: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$RemoteRequest: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$Tasklists$Delete: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$Tasklists$Delete: can't find referenced class com.google.api.client.http.HttpMethod
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$Tasklists$Get: can't find referenced class com.google.api.client.http.json.JsonHttpParser
[2013-06-01 10:32:01 - Warning: com.google.api.services.tasks.v1.Tasks$Tasklists$Get: can't find referenced field 'com.google.api.client.http.HttpHeaders headers' in class com.google.api.client.http.HttpResponse

I got the solution simple go inside android SDK tools/progaurd directory update all the jar files.