Did you follow these instructions? http://trac.osgeo.org/gdal/wiki/GdalOgrInJavaBuildInstructionsUnix
this command must work: java -classpath `pwd`/gdal.jar:`pwd`:`pwd`/build/apps gdalinfo as the instruction are saying: *With luck you will see the gdalinfo usage message. * and try to see a gdalinfo of a file --Nikos Hatzopoulos On Thu, Aug 11, 2011 at 3:21 PM, Jim Pendleton <j...@ittvis.com> wrote: > > Even, > > Thanks for the suggestion, but if I've implemented your > suggestion properly, it has not solved the underlying problem. > > >I'm not sure how you've compiled the gdal_warp.cpp, but if you didn't > >use the provided swig/java/GNUmakefile, there's one point you must be > >very careful that is mentionned at the bottom of that makefile : > > To create a .so file from source in Android, you generally use the > ndk-build utility along with one or more Android.mk and Application.mk > files. I execute the standard make/make install from > within the swig/java directory, then I compile and link gdal_wrap.cpp > within the context of a separate ndk-build process. > > Android NDK Release 6 uses GNU Make 3.81 as its build utility. > > The compiler in my case is arm-linux-androideabi-g++ (GCC) 4.4.3. > > The loader is GNU ld (GNU Binutils) 2.19. > > ># Do not remove -fno-strict-aliasing while SWIG generates weird code > >in upcast methods > ># See http://trac.osgeo.org/gdal/changeset/16006 > > >That would be a plausible cause for the crash, since in your > >particular case the GetMetadataItem() method is in the MajorObject > >class, so the Dataset object needs to call the SWIGDatasetUpcast() > >method... > > Indeed I was lacking the -fno-strict-aliasing switch in the C++ flags in > my > Android.mk file. > > However, I've added this switch to both LOCAL_CFLAGS and LOCAL_CPPFLAGS > for the libgdaljni.so build and I continue to get the error during > execution. > > To add some more info to my original message, the actual error comes > from > within Java_org_gdal_gdal_gdalJNI_MajorObject_1GetMetadataItem_1_1SWIG10 > in > gdal_wrap.cpp on the call to jenv->GetStringUTFChars(jarg2, 0). First a > JNI > warning is issued, then the access violation appears to occur before > that > function can return, or at least before a debug statement I've added > after > the call can send its output to the Android LogCat output. > > The error that's issued is related to jarg2 which is supposed to be a > jstring, versus the jarg1 argument you mentioned which requires the > upcast to GDALMajorObjectShadow. > > I think I'll need to further debug the pointers that are being passed > down to the *GetMetadataItem*1SWIG10* function. None of them look > outrageous at first glance. > > Again, there's every reason to believe I'm missing something that's > otherwise obvious to the experts so please feel free to continue > sending ideas my way! > > Jim P. > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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