Android Jni For Mac
2013-08-07 This post falls into the category of “write it down before I forget it”. I know next to nothing about Android/Java development (approx 12 hours worth) but I knew I needed a certain C library for an upcoming app. I managed to get the C library working from java after 20+ attempts, 4 coffees and the better part of an evening. References Most of the code here is cobbled together from these sources:., and included documentation. My Setup Android Studio v0.23, NDK release 9, target SDK version of 8.
Overview These are the steps:. Compile your library for Android. Write the C/C wrapper for your library. Configure gradle to package up your library. Test from java 1. Compile your library for Android First, grab the.
This includes a toolchain for cross-compiling C/C to Android. Extract the NDK somewhere sane, and add the tools to your path. $ mkdir /AndroidStudioProjects/YourAppNameProject/AppName/prebuild $ cp build/lib/yourLibrary.a /AndroidStudioProjects/YourAppNameProject/AppName/prebuild $ cp -r build/include /AndroidStudioProjects/YourAppNameProject/AppName/prebuild 2. Write the C/C wrapper for your library This will depend on which library you are wrapping. Modify one of the following to carry out some simple task using the library you are wrapping. These are derived from the hello-jni sample app in the NDK - check there for more info on how they work. Your wrapper files and the.mk files should be placed in the projectroot/jni folder.
I am trying to make VTK compile on a Mac Air machine. I am using CMake 2.8-9, using Xcode4 as the generator. If I press the Configure button with VTKWRAPJAVA not checked, it will go with no errors. However I definitely need to use the wrap java since my main program is in Java and I need to get to VTK which is c. As soon as I check the wrap Java, I get Could NOT find JNI. It apparently is looking for jni.h which in Linux there is no problem finding, but in the Mac it apparently can't find it.
Android Jni For Mac Free
I am trying to use SWIG to create a Java interface to a C numerical algorithm I've developed. I was able to successfully do this in work (on a Linux blade) but had a problem doing it on my mac at home because when I would run my small build script to compile the SWIG wrapper class, I would likewise get a complaint about the inability to find jni.h. After hunting around doc pages and apple support I was able to locate jni.h on my system here: /System/Library/Frameworks/JavaVM.framework/Headers/jni.h (this may also be a result of having previously installed the Java developer tools and runtime) when I added this include path in my build script: g -fpic -I.I/System/Library/Frameworks/JavaVM.framework/Headers -c.cpp this error complaint went away. Not exactly the same development issue but maybe if you reference this location for jni.h your build error may likewise go away.