Android :: Violation Of Core Library Class Not Existing In Application

Oct 29, 2009

After getting comfy with the Android 2.0 environment and emulator (for the most part), I took the next step to bind <myapp> against the latest Android 2.0 jars: android.jar and maps.jar. The existing code (working in Android 1.6) did not need any changes to compile, but the app doesn't build due to a weird error message that prevents the build. See snippet below, drawn from the Eclipse Console. I have no aspirations to run up against any core library classes, and I am not aware I do. In other words, I am not implementing SealedObject (or any other core class that I am aware of) that would run up against Dalvik. Not in the javax, java or any other namespace. Anybody got any pointers what's going on here?......

Android :: Violation of core library class not existing in application

Android :: Added Core Library

Apr 23, 2010

I am using Eclipge Ganymede for Android. While developing a project i clicked on FIX PROJECT option by mistake. Then the whole project started showing an error. I have been displayed the following log in the console...

trouble processing "java/math/RoundingMode.class": [2010-04-23 17:24:29 - Gorinka2] Attempt to include a core VM class in something other than a core library. It is likely that you have attempted to include the core library from a desktop virtual machine into an application, which will most assuredly not work. If you really intend to build a core library -- which is only appropriate as part of creating a full virtual machine binary, as opposed to compiling an application -- then use the "--core-library" option to suppress this error message. If you go ahead and use "--core-library" but are in fact building an application, then please be aware that your build will still fail at some point; you will simply be denied the pleasure of reading this helpful error message. [2010-04-23 17:24:29 - Gorinka2] 1 error; aborting [2010-04-23 17:24:29 - Gorinka2] Conversion to Dalvik format failed with error 1

Now i couldnt run the run. Its showing errors. So, help me out in setting my project to normal state...

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Android :: Core Library Error

May 8, 2009

When i am including the jaxp jar file i am getting the error as follows

Trouble processing "javax/xml/XMLConstants.class": [2009-05-08 16:53:18 - TestProject]

Attempt to include a core VM class in something other than a core library. It is likely that you have attempted to include the core library from a desktop virtual machine into an application, which will most assuredly not work. If you really intend to build a core library -- which is only appropriate as part of creating a full virtual machine binary, as opposed to compiling an application -- then use the "--core library" option to suppress this error message. If you go ahead and use "--core-library" but are in fact building an application, then please be aware that your build will still fail at some point; you will simply be denied the pleasure of reading this helpful error message.


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Android :: Core Library - Java.beans.PropertyChangeListener

Mar 17, 2009

I need to build a java.beans.PropertyChangeListener which is part of JDK (rt.jar) but not part of Dalvik.

Trying to copy the sources to my Application I get this:

Attempt to include a core VM class in something other than a core library. It is likely that you have attempted to include the core library from a desktop virtual machine into an application, which will most assuredly not work. If you really intend to build a core library -- which is only appropriate as part of creating a full virtual machine binary, as opposed to compiling an application -- then use the "--core-library" option to suppress this error message. If you go ahead and use "--core-library" but are in fact building an application, then please be aware that your build will still fail at some point; you will simply be denied the pleasure of reading this helpful error message.

My solution: 1) build a core library with consisting out of java.beans.PropertyChangeListener 2) integrate that library (jar?) into my application.

My question: - how can I build a core library using eclipse?

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Android :: Include A Core VM Class In Something Other

May 27, 2009

I am using Android SDK 1.1 Intellij idea plugin

Everything was fine. But now, error occurs during run application from idea . I am not using external libs, only android sdk. But application compliled and deployed fine using ant.


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Android :: Stack Trace Gives Hex Values Not Function Names When Core Library Crashes

Feb 12, 2009

Here my application "" calls a core library "" through JNI call. There is a segmentation fault in "". When executed I get the following log What I see is some Hex value followed by a library name. #00 pc afe0d24c /system/lib/

Also there is a Stack section 01-01 00:02:57.800: INFO/DEBUG(1600): stack: 01-01 00:02:57.800: INFO/DEBUG(1600):bef2e570 bef2e604 [stack] 01-01 00:02:57.810: INFO/DEBUG(1600):bef2e574 afe0a333 /system/ lib/

This too gives similar information. I am looking for little more informations rather than Hex values. Like the backtrace feature where the stack hex values is mapped to the function names and function names are visible.

Please provide information how to see the function names in stack rather than Hex values. Is ther any compiler options needs to be updated? Any makefile to be updated to enable backtrace?

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Android :: Core Class Access Resources At The App Layer

Sep 22, 2009

Can a core class such as "AbsListView" access resources, such as xml files, and .png's, in a 3rd party app installed in the normal way (at the app level)?

I realize this is a change in framework code, and that is fine for my purposes. So, for example, if I know that I am going to install an app called "MyApp", could I go into frameworks/base/core/java/android/ widget/ and tell it to use an xml file and .png's that live in that app? Here is the line I would want to modify: setSelector(getResources().getDrawable(;

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Android :: Removed Droid Library / Add New Like 1.6 To An Existing Project In Eclipse?

Mar 16, 2010

I am using Windows and Eclipse. Through a few mis-clicks, I removed the Android library from my project. I am able to add the android.jar file from the specific version I want but that is does not allow me to run.

In eclipse, how do I add an Android library like 1.6 to an existing project?

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Android : Class Generator For Data Classes Used In Java / Droid From Existing Wsdl File?

Apr 3, 2010

Is there any class generators to process web services in Android/Java? I may have to write my own to generate classes against WSDL but I'm trying not to. Also is there one for REST services as well?

If not providing me with discovery service suggestions like disco/wsdl are good enough.

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Android :: How To Use Media Player In Library Class?

Feb 25, 2009

I have successfully implemented the Media Player for my apps, but when I tried to use some of the callback methods I ran into a problem.What I'm trying to do is use Media Player in a reusable (library) class.This MediaPlayer is created by passing the Activity Context to it's constructor.I then use getApplicationContext to avoid any potential memory leaks.This works well and I'm quite happy with it.My problem is trying to use callbacks.When I implement MediaPlayer.OnPreparedListener in my class.I believe this is due to the class itself not being an Activity.When I implemented the callbacks in a separate test project, the mp.prepare () works fine. I cannot use a passed context to my library class, as that would require the Activity to implement the listener and not my library class. How can I create a library class that creates/uses MediaPlayer and it's callbacks without making it extend Activity?Is this not possible?

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Android :: Sending An Object To A Library Class

Aug 28, 2010

I'm attempting to make a simple homebrew game engine/framework in android. I have the "engine" as a library project that handles all of the graphics rendering, game activity, and whatnot. Essentially, the library project has a class GameMain which has a background image, an array of drawables, and a few functions (the most important is a run() function). The projects that use this library extend this class with their own unique run() function. The idea is that games that use the engine start with their own activity, launch the GameActivity from the library, and pass their unique GameMain child object into the library, which should run the unique run() method thanks to polymorphism.

Getting this to work, however, has been a struggle. I originally attempted to make the GameMain Serializable, which didn't appear to work. I'm now attempting to make it a Parcelable, but it does not appear to run the child objects run() function when called from the library. I'm wondering, are Parcelable objects actually capable of sending Object methods across activities? Am I going about this the wrong way, or am I just having some other weird bug I have not uncovered?

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Android :: Added Library Project And Now Eclipse Can't Find R Class

Jun 26, 2010

I am trying to add an 'Android Library project' I have created to another regular Android project. The Library Project had a jar dependency and was also dependent on another java project in my workspace. I had to add both of these to the my 'regular Android project' because otherwise Eclipse could not find them (Not sure if this was the right thing to do because it would mean that I will have to manually update all projects when the library gets another jar dependency). Anyway, the errors went away and now the Regular Android Project can't find the R class, I have tried a clean but it did not work. I checked in the /gen folder and both the R classes are there - from the library and the regular project.They have the correct strings inside them.

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NoClassDefFoundError For Static Inner Class In Library Jar

Dec 9, 2013

I have a thread on StackOverflow (titled: NoClassDefFoundError for Jersey 2.4.1 client in Android) but I thought I would reach out here in hope of getting a more specific/targeted audience group.I have followed instructions from other posts about the libs Android dependency fix but I still get the issue.

I am using Eclipse Juno, with an Android App targeting API 17. Basically I am getting a NoClassDefFoundError at runtime for the org. glassfish. jersey. model.internal.CommonConfig$1 class located in jersey-client-2.4.1.jar. This is when I just do a Run As... deploy from within Eclipse and it fails when I instantiate the CommonConfig class or one that depends on it internally. The start up log is given below:

[HIGH]12-10 12:25:20.657: I/dalvikvm(10170): Failed resolving Lorg/glassfish/jersey/model/internal/CommonConfig$1; interface 920 'Lcom/google/common/base/Function;'
12-10 12:25:20.657: W/dalvikvm(10170): Link of class 'Lorg/glassfish/jersey/model/internal/CommonConfig$1;' failed
12-10 12:25:20.657: E/dalvikvm(10170): Could not find class 'org.glassfish.jersey.model.internal.CommonConfig$ 1', referenced from method

It doesn't seem to find a static inner class of CommonConfig. In the SO forum I tinkered with some options in ProGuard but I've come to learn that this isn't even used in the standard debug mode, only when you do a release build (Export from Eclipse). It would appear that something is happening with the class but I can't figure out why it would not be included if its parent is. Is there some kind of 'light' ProGuard process that goes on when a debug deploy is done? how to resolve this particular case of NoClassDefFoundError?

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Android :: Access Application Class From Class Other Then Activity

Sep 8, 2010

I'm new to Java and android development. In my application I need data which is accessible for a few activities. I've read that a good solution is to use Application class for this. So I use it like this:

public class MyApplication extends Application {
private String str;
public String getStr(){
return str;
public void setStr(String s){
str = s;

and I can access this variable from activity like this:........................................

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Android :: BigFraction Class In The Apache-Commons-Math Library Return Incorrect Division Results?

May 14, 2010

In the spirit of using existing, tested and stable libraries of code, I started using the Apache-Commons-Math library and its BigFraction class to perform some rational calculations for an Android app I'm writing called RationalCalc.

It works great for every task that I have thrown at it, except for one nagging problem. When dividing certain BigFraction values, I am getting incorrect results.

If I create a BigFraction with the inverse of the divisor and multiply instead, I get the same incorrect answer but perhaps that is what the library is doing internally anyway.

Does anyone know what I am doing wrong?

The division works correctly with a BigFraction of 2.5 but not 2.51, 2.49, etc...


This was indeed a bug in the apache-commons-math 2.0 libraries. The bug is fixed in v.2.1.

It is now listed in the Fixed Issues section of the bug tracker:

When multiplying two BigFraction objects with numerators larger than will fit in an java-primitive int the result of BigFraction.ZERO is incorrectly returned..attempting to reproduce the issue and setting me on the right track.


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General :: Install Quad Core Firmware On Dual Core CPU?

Feb 12, 2014

I just want to know a couple of things (NOT that I would ever try this myself but im interested in the info).

1) Is it possible to install quad core firmware on dual core tablet?

2) Is it possible to 'spoof' the android system into thinking 2 CPUs are 4?

3)If you install dual core firmware on quad core machine will 4 cores or 2 show up?

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Importing Already Existing Android Application?

Oct 22, 2011

I am looking to develop a new android application. I want to import already existed application. But i am unable to open it. I opened in this way. New-> project->android-> create project from existing source... I gave the project name and also given the path of the existing project but i am getting an error that " An SDK target must be specified "

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Motorola Droid :: Tethering - Violation Of TOS?

Mar 24, 2010

So I'm pretty sure that I understood tethering was a violation of contract. Well I just saw a commercial for verizon and the palm preadvertising that it can tether up to 5 devices, so what's up with that??

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Android :: Add / Change Features Of Existing Application?

Aug 23, 2010

Is it possible to add or change the existing applications?

For example, I would like to add a new floating window following the current people when I open the contact manager.

I just want to change it a little bit. And I don't want to rewrite all the features of contact manager.

Is it possible to do this?

As I understanding, the view of the contact manager is controlled by the activities of the "contact manager" application. How can my application react when the user opening the contact manager?

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Android :: Procedure To Add PayPal To Existing Mobile Application

Jul 20, 2010

I am developing an Android mobile application(Shopping cart) which involves the integration with PayPal for payment functionality. Kindly inform me about the procedure/steps on how to integrate with PayPal with an existing Android application.

Also would like to know whether will Android Market approve this kind of application which uses a payment gateway other than Google Checkout.

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Android :: Create Icon For Existing Application On Droid?

Feb 10, 2009

Anybody can tell me how to create icon for existing application on Android

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Android :: Full Android Database Class For Existing SQLite Database?

Aug 23, 2010

I'm trying to deploy an application with an existing SQLite database.I've been reading though the examples that are posted but they are always missing some part of the class. I feel like I'm trying to bake muffins but no one told me to use baking powder.Can someone post a full database helper class for depoying an SQLite database on Android? Edit : Delete old code because it doesn't work.

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General :: Add Existing SQLite Databases To Application

Feb 27, 2013

I read some stuff about SQLite databases to use them within my own application. so for this point, it should work.


for most of my data stuff i need a database that i can directly put into my application. i read on stackoverflow that it's possible to put up to 1,2mb files in the assets folder and then copy them anywhere else to use them.

my question is:

is it possible to acces those databases in the assets folder directly to read from them? there's no need to insert data into this database, it's just a data storage to read from? is it possible? and if it is than how could i do this?

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Android :: Want To Use Ksoap2 Library On My Application

Jul 29, 2009

I want to use ksoap2 library on my application and i got a ksoap2 library from i add it as an external library but my application will crash when it need to use the library.

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Android :: Java Application For EPUB Library

Sep 5, 2010

Is there any ready library to read ePub format? I found ePublib in I'm still learning how to use it. I wonder if there is ePub jar which ready to use for read ePub format in android.

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Android :: Having Referencing A Library Project From An Application

Aug 7, 2010

I've been trying to do this now for 2 whole days, and am about to give up. I followed the instructions here:

but it is not working. I can see the library project is added to my application but I cannot reference anything in it. Also the file from the lib was NOT added to my application, so the lib project contains tons of errors, everywhere it tries to reference it's own file (most likely the cause of the former).

Also, in the console there are messages stating that the there is "No resource identifier found for attribute 'X' in package 'Lib Package'. The library builds just fine, and I don't get those messages in the console until I hook the library to my application.

You would think that creating and referencing a library would be a simple thing to do, as it is in most other projects, but this is turning into a real nightmare.

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Android :: Gesture Library / Application Closes Unexpectedly

Dec 23, 2009

I am a brand new developer to Android. I wrote a pretty simple application that uses the gesture library. The application itself seems to run fine in the simulator. However, when I installed the application on my Google Dev Phone 1 (G1) last night, it doesn't seem to work. I've upgraded my G1 with the 1.6 image from the htc developer site. I see the first screen/activity for about a second and the application exits without and errors. Here is what my manifest looks like:

<manifest xmlns:android=""
package="com.blahblah" android:debuggable="true"
<uses-sdk android:minSdkVersion="4" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_CONTACTS">
</ uses-permission>
<uses-permission android:name="android.permission.CALL_PHONE">
</uses- permission>
<application android:icon="@drawable/icon" android:label="@string/ application_name"> <activity android:name="Gesture1Activity"
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<activity android:name="Gesture2Activity"
android:label="@string/label_gesture_list" />
<activity android:name="Gesture3Activity"
android:label="@string/label_create_gesture" />

Here's the output for logcat:

D/AndroidRuntime(860): D/AndroidRuntime(860): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<< D/AndroidRuntime(860): CheckJNI is OFF D/AndroidRuntime(860): --- registering native functions --- I/jdwp (860): received file descriptor 20 from ADB D/ddm-heap(860): Got feature list request I/ActivityManager(101): Starting activity: Intent { flg=0x10000000 cmp=com.blahblah/.Gesture1Activity } D/AndroidRuntime(860): Shutting down VM D/dalvikvm(860): DestroyJavaVM waiting for non-daemon threads to exit E/AndroidRuntime(860): ERROR: thread attach failed D/dalvikvm(860): DestroyJavaVM shutting VM down D/dalvikvm(860): HeapWorker thread shutting down D/dalvikvm(860): HeapWorker thread has shut down D/jdwp (860): JDWP shutting down net... D/jdwp (860): +++ peer disconnected I/dalvikvm(860): Debugger has detached; object registry had 1 entries D/dalvikvm(860): VM cleaning up D/dalvikvm(860): LinearAlloc 0x0 used 677572 of 4194304 (16%) W/InputManagerService(101): Window already focused, ignoring focus gain of:$Stub $Proxy@439a9eb8

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Android :: Java Application / Native Library Integration

Apr 8, 2009

I have developed bluetooth application where native library will be initiated by Java application (using JNI wrapper). JNI will call the entry function of the native library and then it will create Pthread to for scanning the device. Once Scanning is over, i will get the callback which i registered during the entry function of the native lib (called by app). But i haven't received the callback, but if i run the same native library in the shell (executable from the shell terminal) it is working fine. Can any one help me, if there is any specific architecture needs to follow while developing Java application based on native lib?

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Android :: Create Library For Another Application To Use / Make Jar File?

Jul 19, 2010

I need to provide some SDK as third party library for other applications. We don't want to open our source code. How could make a jar file?

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Android :: Set Up Application With Library Project Dependence In Eclipse

Jun 18, 2010

I'm trying to set up an Android application with an Android library project dependence in Eclipse. I've set up a project called AnTest and a library project called AnLib. I've provided a reference to AnLib in the project properties of AnTest. Now I'm trying to refer to some library code (a static public method) from AnTest. Eclipse throws "com.anlib.Hello cannot be resolved to a type".

And it's not that the reference is dangling - I can see the resources properly merged. But from within AnTest, the only class in package com.anlib is "R".I've added AnLib to the Java build path/Projects in AnTest project properties. Now it compiles, but running throws a NoClassDefFoundError exception.

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