Installing OpenSceneGraph 3.0.1 for Android with OpenGE ES 1.xĭownload OpenSceneGraph-3.0.1 ( link) and extract it toĭownload the 3rd party dependencies ( link) and extract it to (ndk-r7b and ndk-r7b have been proven to work with OSG)Īfter everything has been copied to the appropriate directories, we now have a working environment for Android development. Install AT Least Android 2.2 (API 8).(I installed ALL the Android API versions from API 8 to API 15). Start Eclipse -> Help -> Install New Software -> in the field ‘Work with:’, fill in “”, then press Enter -> check “Developer Tools” -> press Next till everything is installed.Īfter restarting Eclipse: Window -> Android SDK Manager. Install the following two packages using either Synaptic or apt-get: Setup a working Android development environment in Ubuntu: Android Tablet – Acer Iconia Tab A510 (Tegra 3 Processor)."Compile thumb : NativeCode libs/armeabi/libNativeCode.To properly setup an environment for Android development using OpenSceneGraph, we need the following hardware and software: **** Build of configuration Default for project AndroidTest **** The resource activity_main.xml file containing the app window used in this example is the following:ĭuring compilation into Eclispe main window you should see (in " console" subwindow") something like this: The first get the string from native code and the second pass 0 as function param and get return of 1. ![]() Return (*jenv)->NewStringUTF(jenv, "String from native code") Īs you can see java code call native functions and show result in a toast widget. JNIEXPORT jstring JNICALL Java_com_example_androidtest_NativeCodeInterface_get_1string(JNIEnv *jenv, jobject jobj) JNIEXPORT jint JNICALL Java_com_example_androidtest_NativeCodeInterface_get_1int(JNIEnv *jenv, jobject jobj, jint param) #include "com_example_androidtest_NativeCodeInterface.h" Onceĭone create inside the jni folder a new file called " NativeCode.c" with In your project folder create a newįolder called " jni" and move the header file just generated there. ![]() In alternative you can use the extern "C" declaration before each C++ function you want to export to JNI. This mean if your code is C++ you need to create a wrapper code in C format to work with JNI and use this wrapper as interface to C++ code. Another very important note to know is JNI is able to interface java with native code compiled in C format only. ![]() If you want to use functions exported by a precompiled static library you have to develop a dynamics library linked to the static library you need to use as "wrapper" between java and the functions you require. Only dynamic libraries can be used, no static library and no standalone application. This dynamics library will export the functions with specific syntax just generated that allow to be called from Java side. However with "native code" we mean a dynamics library written in C/C++ language and compiled using a toolchain (provided inside NDK). Java language used in Android app can communicate to native code using a mechanism called JNI. Here we'll add some native C/C++ file to be integrated into the whole app project.
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