Either the JAR you added has java.nio.CharBuffer in it or you accidentally messed up your build path to include some other Java JAR that has java.nio.CharBuffer in it. That class should only come from the android.jar supplied by the Android SDK, which is automatically put in your build path when you create an Android project (either for Eclipse or outside of Eclipse).
On Fri, May 13, 2011 at 4:01 PM, Spooky <spooky1...@gmail.com> wrote: > While trying to build the Yamba example code from "Learning Android", > I am getting the following error. I suspect that it > may have something to do with the external jar file, jtwitter.jar (the > book version which has one error from the original > patched): > > --------------------------- CUT HERE --------------------------- > > [2011-05-12 13:36:14 - Yamba] Dx > trouble processing "java/nio/CharBuffer.class": > > Ill-advised or mistaken usage of a core class (java.* or javax.*) > when not building a core library. > > This is often due to inadvertently including a core library file > in your application's project, when using an IDE (such as > Eclipse). If you are sure you're not intentionally defining a > core class, then this is the most likely explanation of what's > going on. > > However, you might actually be trying to define a class in a core > namespace, the source of which you may have taken, for example, > from a non-Android virtual machine project. This will most > assuredly not work. At a minimum, it jeopardizes the > compatibility of your app with future versions of the platform. > It is also often of questionable legality. > > If you really intend to build a core library -- which is only > appropriate as part of creating a full virtual machine > distribution, 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 be forewarned that your application > will still fail to build or run, at some point. Please be > prepared for angry customers who find, for example, that your > application ceases to function once they upgrade their operating > system. You will be to blame for this problem. > > If you are legitimately using some code that happens to be in a > core package, then the easiest safe alternative you have is to > repackage that code. That is, move the classes in question into > your own package namespace. This means that they will never be in > conflict with core system classes. JarJar is a tool that may help > you in this endeavor. If you find that you cannot do this, then > that is an indication that the path you are on will ultimately > lead to pain, suffering, grief, and lamentation. > > [2011-05-12 13:36:14 - Yamba] Dx 1 error; aborting > [2011-05-12 13:36:15 - Yamba] Conversion to Dalvik format failed with > error 1 > > --------------------------- CUT HERE --------------------------- > > Can anyone tell me what this means, and, more importantly, how I get > rid of it so the project will build? > > Thanks, > --jim > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android 3.0 Programming Books: http://commonsware.com/books -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
