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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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.
CODE:..............
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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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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?......
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Feb 12, 2009
Here my application "com.android.hello" calls a core library "libvt.so" through JNI call. There is a segmentation fault in "libvt.so". When executed I get the following log What I see is some Hex value followed by a library name. #00 pc afe0d24c /system/lib/libc.so
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/libc.so
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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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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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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Nov 11, 2010
I have an Android library project that makes calls to PreferencesManager.getDefaultSharedPreferences.
I have 2 version of my app, paid/free, and they are not able to access the preferences stored by the library code.
Can someone tell me the right way to store values in SharedPreferences in library code and have the values available to projects that include the library?
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Aug 17, 2010
According to this SDK guide, unit-testing a Library project can be achieved by creating a standard application project, reference the Library project and then instrument the application for unit testing. However, when I do this and launch the test application I get the message.No tests found with test runner 'JUnit 3".I'm using Eclipse and the Android ADT plugin, all latest versions.the projects compile just fine. The test project also installs fine to the emulator. But in the console I can see that it looks for <library>.apk, which of course doesn't exist since I'm compiling this as a library into the test project.
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Aug 26, 2009
I created a jni library which depends the third shared library, I must copy the third shared library to /system/lib, otherwise, Java application can't load jni library. But you know, on G1 with official OS image, /system/lib is readonly. I tried to call System.setProperty to set java.library.path to the location stored the thired shared library before load jni library, but the issue still exists.
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Jul 15, 2010
As I understand, the three ways of distributing my application are via Jar, Android Library and Android Library Project.Jar - cannot contain resources or XML layouts (so this is out for me)Android Library - I don't really know how this works but the Google API uses it..Android Library Project - includes resources but allows the client free rein on the code as it is distributed as source.If I am to create a closed source application that requires drawables and XML files that I want to distribute to other Android programmers, what should I use? And can someone direct me to a tutorial on creating an Android Library?
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Apr 26, 2010
Android AMF client library Aftek has extensive experience in developing enterprise Flex applications. We have used BlazeDS extensively and we believe that it would nice to provide all the benefits provided by AMF for Android applications as well. We have developed an Android AMF client library which would enable Android application developers use the same extensively. The Android AMF client library supports remoting and secured remoting. This will allow all android applications to use the existing backend like .NET, Java, or PHP. The implementation is asynchronous in nature providing success and failure callbacks. This allows application to perform other tasks without blocking the application. We are currently performing some performance benchmarking and plan to release our library very soon. We would also be incorporating the messaging feature as well.
Android RTMP client library:Aftek has extensive experience in developing voip and audio/video and media applications. Media applications has a huge market and there would be quite a few people eager to develop the medial applications on Android. We believe that it would nice to provide all the benefits provided by RTMP for Android applications as well. We are developing an Android RTMP client library which would enable Android application developers use the same extensively. Our Android RTMP client library would support some add-ons that would help developers to deliver robust media solutions.
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Dec 26, 2009
I have to add java libraries javax.xml to the my android project, while I am trying to add them it shows the error "Conversion to Dalvik format failed with error ".
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Jul 15, 2009
I know this topic has been covered a lot, so apologies if this is redundant. I would like to work in the SDK and simply extend a core app that already exists, and then override some functionality. For example, I would like to extend Contacts, but then overwrite the entire ContactsListActivity class, for my own experimental MyContacts.apk.
In this youtube video: http://www.youtube.com/watch?v=3aUjukCdPyQ
Dianne talks about the ringtone picker, did she just extend the core ringtone picker and work in the SDK?
I DO have the entire platform source code, and have made some changes to core apps there, but rebuilding takes awhile (even useing mmm, and snod), so I was hoping to speed up development by working in the SDK (where building and running the emulator seems to go faster). Not sure if this is realistic or not.
This is all just for some internal experimentation, I am not looking to contribute the the core apps.
In another post, someone had referred to ".... classes available in the SDK....". How can we see what classes we have access to, in the SDK.
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Jun 15, 2009
I want to pass the build process the --core-libary option. But in ADT I don't see such an option. So in Version 1.1 --core-library could be inserted into the build.xml and build was successfull when using ant. It looked like this:
CODE:..........
In 1.5 build.xml as well as the hole build process was heavitly altered. Now even the dx.jar is gone. The build.xml works differently, and I dont see where to put --core-library. There is also no documentation for where to put it.
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Nov 22, 2010
I'm installing the Android SDK on a fresh installation of Fedora 14 (Linux).
I installed eclipse, and ran the tools/android sdk tool to install all the Eclipse components for the SDK.
I was able to get DDMS to install when selecting it by itself.
And for the last component - the Android developer tools, I'm getting the ugly error message pasted below.
Now I'm Stuck in Eclipse dependency hell.
I've searched through the available packages in Fedora and I can't find the one that has the files necessary to satisfy this Eclipse dependency...
Can anybody please translate what it is that Eclipse is asking for and what Fedora package it lives in?
The error:
Cannot complete the install because one or more required items could not be found.
CODE:.................
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May 27, 2009
I am using Android SDK 1.1 Intellij idea plugin Android_Support_6812.zip
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.
CODE:................
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Oct 26, 2010
Anyone hearing any news on upcoming dual core releases. I'm eligible for upgrade on 12-1-10 but if something new is coming out I'd wait a few months. I'm with sprint and would like to stay with them, hoping they will have one of the new dual core releases.
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Dec 12, 2009
We ran core tests by the command "/development/testrunner/runtest.py - v --coverage core" and got coverage report successfully. But the reports says all are 0%. We ran apidemos and got coverage report which looks good.
Below is the console output for core tests:
CODE:.............
So I wonder why core tests's coverage report says 0% and how can I make the report make sense.
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May 26, 2009
I will be soon working on porting Android OS to some custom hardware. Has any one in the group done this before? If yes, what are typical guidelines, roadblocks to watch out for?
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Jul 30, 2010
How do I build and debug the cores apps in Android source tree, like AlarmClock and Settings, located under:
${ROOT}/packages/apps?
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Nov 24, 2009
What is the quickest way to restart or re-init the launcher a core process without the "you've killed the a core process unexpectedly" notification message?
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Nov 24, 2010
I am interested in integrating Scala (or some other non-Java JVM-language) into the android platform. I am not referring to writing an android application with Scala, that I did early early on, but actually hooking into the build process that builds the android platform source tree. I imagine this will be a matter of hooking into the makefiles and such. Does anyone have insight into this?
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Nov 12, 2010
We are running the DALVIK Virtual Machine tests from 057-iteration- performance/ suite, and we don't
There is a static table in test script which defines the various test timming. This table has hard coded values for al lthe expected results. Does this table have to be changed based on the platform whether its a Dual Core or single core? It's always failing with timeout errors.
We believe these errors are to do with how the nano seconds are measured. We have been seeing some issues regarding the API System.nanoTime(); when we run on a Dual Core architecture.
Has anyone seen problems with this API on a dual core architecture?
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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/AbsListView.java 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( com.android.internal.R.drawable.list_selector_background));
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Jun 28, 2013
Is there any way to access core Android functions like app switching (holding down the Home button for a few seconds), to be used in other contexts? Similar to how you can access Activities from the apps installed and use them as Shortcuts.
What I'd like to do is this:
press Home -> bring up app switching interface
long-press Home -> go to Home screen
Basically I want to reverse the two functions that short and long pressing the Home button does.
If not that, I'm also interested in being able to access the "app switching interface" via a Shortcut (like a Shortcut you place on your Home screen), or via an app.
For example, you can long-press on the Home screen and add a Shortcut (different than adding a shortcut to an App) which basically includes various context functions of some of the apps you have installed. I want to be able to do this - add a Shortcut - in which the Shortcut I add launches the "app switching interface" that you normally get by long-pressing the Home button. That way I can put that Shortcut in Wavelauncher or wherever else I want to be able to app switch without the annoyance of having to long-press something.
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Sep 23, 2010
I just did the new update, and the fps is up in the 50s on gears andfps2d. The issue is if I run Neo core it oly shows 28 fps.
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Nov 6, 2009
There is this xml file under frameworks/base.
/frameworks/base/core/res/res/layout/simple_dropdown_item_2line.xml
How can I inflate that in my own android application?
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Mar 16, 2010
I am now reading contentProvider.java( under the base/core/java/android/content)
Ln 127 looks following:
CODE:..........
I'm really confused about that contentProvider invoke this.query()
CODE:.................
where is it implement? How can i find it? anyone can tell me?
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Jun 18, 2010
I am 6 months experience in Android, use to develop simple UI based application. Now i want to write application targeting the Android core Kernel.For example i want to develop a Framework which is not present in Android.To achieve that we have to write the code for the Kernel. I dont know where and how to start the Android Kernel Programming. If anybody knows the way to start it.
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