For example: TextView tv = (TextView)findViewById(R.id.my_textview) tv. It is a set of Tools that allows you to easily include native code written in C or C++. Then you can use the native function directly. NDK stands for Native Development Kit, first introduced in Android 1.5. Now complete the function JNIEXPORT jstring JNICALL Java_com_rahulprasad_www_ndksample_MainActivity_nativeFunction (JNIEnv *env, jobject obj) Everything i am finding does not support these newer ABIs, and just adding the ABIs doesnt seem to help as the builds don't seem to work with r10c.
Android ndk r10e how to#
Include header in main.c It should look like this #include "com_rahulprasad_www_ndksample_MainActivity.h" JNIEXPORT jstring JNICALL Java_com_rahulprasad_www_ndksample_MainActivity_nativeFunction (JNIEnv *, jobject) Hi, I am trying to figure out how to build a 64 bit open ssl for android ndk's use with 64 bit support. Set the permission of the file to be an executable: Run the NDK.
This will create jni folder inside src This will also create a header file called com_package_name_MainActivity.hĭuplicate the header file as main.c and remove everything except function initialization. Move the setup file into the same installation folder: mv android-ndk-r10e-darwin-x8664. Then run this command from inside /app/src/main javah -d jni -classpath /Applications/adt-20140624/sdk/platforms/android-19/android.jar././build/intermediates/classes/debug:/Applications/adt-20140624/sdk/extras/android/support/v7/appcompat/libs/android-support-v4.jar:/Applications/adt-20140624/sdk/extras/android/support/v7/appcompat/libs/android-support-v7-appcompat.jar You may still use this tutorial to understand how things work internally.Ĭreate a native method in MainActivity.java public native String nativeFunction() Android Studio 2.3+ already comes with preconfigured C++ support.
Update: This tutorial is for older version of Android Studio. Write your first Android JNI program using NDK in Android Studio
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