Please look at the docs and samples bundled with the NDK. You can also read an overview here: http://developer.android.com/sdk/ndk/1.6_r1/index.html
If you have more specific questions regarding the ndk, you should post on the android-ndk Google Group. Xav On Thu, Nov 5, 2009 at 4:48 PM, cvance383 <[email protected]> wrote: > i downloaded and installed the ndk but how do i recompile the fast md5 > library? do i also need a line within my project like... > > static > { > System.loadLibrary(x); > } > > ?? thanks for all your help so far. > > On Nov 5, 3:57 pm, Xavier Ducrohet <[email protected]> wrote: >> ah I understand now. >> >> Here's what happens: >> >> fast-md5.jar is not 100% java and has a native component to it. That >> native component is in multiple form for different os >> (linux/mac/windows) and architectures (x86/ppc). >> >> Just this is going to not make it work. You would have to make sure to >> recompile the native library with our NDK, and make sure it's packaged >> properly with the apk (NDK does this for you) and make sure the java >> code of the jar loads it like other NDK libraries. >> >> The problem that you are seeing is that packaging 3rd party jar files >> has 2 steps: >> - take the .class files inside the jar file and dex them into >> classes.dex with the other code from the project (or other jar files) >> - take the non .class files from the java and put them into the apk >> (which is a zip file like jar files), with the same folder structure >> so that Java code accessing resources through >> Class.getResourceAsStream() (or similar) can find and load those >> resources >> >> So it looks like fast-MD5.jar contains lib/arch/darwin_x86/MD5.jnilib >> and other libraries. The problem is that this conflicts with where the >> NDK libraries are supposed to be and the package manager on the device >> complains. >> >> Note that in 1.5 this check is not there but the app will only work if >> it doesn't call into method of this jar file that uses native >> implementation. >> >> On our side we should definitively check this during packaging and >> generate a warning/error when we detect a potential conflict. >> >> Xav >> >> >> >> >> >> On Thu, Nov 5, 2009 at 10:54 AM, cvance383 <[email protected]> wrote: >> > when i extract the apk, in the lib/arch/darwin_ppc/ is a file: >> > MD5.jnilib . In my project the files in my lib folder are commons- >> > httpclient-3.1.jar , fast-md5.jar, gson-1.2.3.jar . Is this where my >> > problem is stemming from? >> >> > O Nov 4, 8:44 pm, Xavier Ducrohet <[email protected]> wrote: >> >> what is all that lib/arch/darwin_ppc/ stuff? >> >> >> It looks like you're putting native code compiled for >> >> mac/linux/windows in your apk? >> >> >> It works on 1.5 because the package manager back then didn't check for >> >> native code. >> >> Starting with 1.6, it only accepts an apk if the native code packaged >> >> in the apk match the device. The emulator emulates a basic ARMv5 >> >> device and expects native code to be in lib/armeabi/libfoo.so >> >> >> Do you happen to have a libs folder in your project that contains this >> >> "arch" folder (and subfolders)? >> >> >> Xav >> >> >> On Wed, Nov 4, 2009 at 5:08 PM, cvance383 <[email protected]> wrote: >> >> > correction it works fine on 1.5, but not 1.6 or 2.0 , im thinking this >> >> > is an sdk issue, but i still dont know. any help is greatly >> >> > appreciated. >> >> >> > On Nov 4, 7:51 pm, cvance383 <[email protected]> wrote: >> >> >> it prints out all the drawable files and this >> >> >> >> 2540 2009-11-03 19:26 AndroidManifest.xml >> >> >> 61100 2009-11-03 18:57 resources.arsc >> >> >> 719304 2009-11-03 19:26 classes.dex >> >> >> 453 2009-11-03 19:26 assembly-descriptor.xml >> >> >> 12580 2009-11-03 19:26 lib/arch/darwin_ppc/MD5.jnilib >> >> >> 9040 2009-11-03 19:26 lib/arch/darwin_x86/MD5.jnilib >> >> >> 7346 2009-11-03 19:26 lib/arch/linux_x86/MD5.so >> >> >> 13312 2009-11-03 19:26 lib/arch/win32_x86/MD5.dll >> >> >> 25714 2009-11-03 19:26 META-INF/MANIFEST.MF >> >> >> 25767 2009-11-03 19:26 META-INF/CERT.SF >> >> >> 980 2009-11-03 19:26 META-INF/CERT.RSA >> >> >> --------- ------- >> >> >> 1955356 303 files >> >> >> >> ... btw this is the first time i have had a problem installing the >> >> >> apk, if i switch back to 1.5 or 1.6, there isnt any issues. >> >> >> >> On Nov 4, 7:09 pm, David Turner <[email protected]> wrote: >> >> >> >> > hmm, can you tell us the content of your .apk, i.e. what does >> >> >> > running "unzip >> >> >> > -l <yourapplication>.apk" prints out ? >> >> >> > (feel free to obfuscate names if needed, but the first four >> >> >> > characters of >> >> >> > each line are important). >> >> >> >> > thanks in advance >> >> >> >> > On Wed, Nov 4, 2009 at 3:17 PM, cvance383 <[email protected]> >> >> >> > wrote: >> >> >> > > downloaded the new 2.0 sdk the other day, and tried testing my app >> >> >> > > on >> >> >> > > 2.0 via the emulator. I am using eclipse, and when i click run, the >> >> >> > > new emulator runs with my 2.0 avd. but when eclipse tries to >> >> >> > > install >> >> >> > > it i get this in the console... >> >> >> >> > > Installation error: INSTALL_FAILED_CPU_ABI_INCOMPATIBLE >> >> >> > > Please check logcat output for more details. >> >> >> >> > > the log has this >> >> >> > > 11-04 18:16:01.818: ERROR/PackageManager(53): Package com. >> >> >> > > (package).android has mismatched uid: 10025 on disk, 10026 in >> >> >> > > settings; read messages: >> >> >> > > 11-04 18:16:01.818: ERROR/PackageManager(53): Read completed >> >> >> > > successfully: 41 packages, 6 shared uids >> >> >> >> > > 11-04 18:16:01.906: WARN/PackageManager(53): Install failed: .apk >> >> >> > > has >> >> >> > > native code but none for arch armeabi >> >> >> > > 11-04 18:16:01.932: WARN/PackageManager(53): Package couldn't be >> >> >> > > installed in /data/app/com.(packagename).android.apk >> >> >> >> > > I can not figure out why it does this. I have searched aimlessly >> >> >> > > for >> >> >> > > answer and this is one of my last resorts. Thanks for any help >> >> >> >> > > -- >> >> >> > > You received this message because you are subscribed to the Google >> >> >> > > Groups "Android Developers" group. >> >> >> > > To post to this group, send email to >> >> >> > > [email protected] >> >> >> > > To unsubscribe from this group, send email to >> >> >> > > [email protected]<android-developers%2Bunsubs >> >> >> > > [email protected]> >> >> >> > > For more options, visit this group at >> >> >> > >http://groups.google.com/group/android-developers?hl=en >> >> >> > -- >> >> > You received this message because you are subscribed to the Google >> >> > Groups "Android Developers" group. >> >> > To post to this group, send email to [email protected] >> >> > To unsubscribe from this group, send email to >> >> > [email protected] >> >> > For more options, visit this group at >> >> >http://groups.google.com/group/android-developers?hl=en >> >> >> -- >> >> Xavier Ducrohet >> >> Android SDK Tech Lead >> >> Google Inc. >> >> >> Please do not send me questions directly. Thanks! >> >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Android Developers" group. >> > To post to this group, send email to [email protected] >> > To unsubscribe from this group, send email to >> > [email protected] >> > For more options, visit this group at >> >http://groups.google.com/group/android-developers?hl=en >> >> -- >> Xavier Ducrohet >> Android SDK Tech Lead >> Google Inc. >> >> Please do not send me questions directly. Thanks! > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Xavier Ducrohet Android SDK Tech Lead Google Inc. Please do not send me questions directly. Thanks! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
