#Github android ndk samples how to
#Github android ndk samples for android
#Github android ndk samples code

With Android Studio: 'Open An Existing Android Studio Project' or 'File' > 'Open', then navigate to & select project's adle file.For Studio related issues, refer to Android Studio known issues pageįor samples using Android.mk build system with ndk-build see the android-mk branch.

#Github android ndk samples for android

Configure NDK for Android Studio/Gradle Plugin.Google Play Game Samples with Android Studio.When starting new project, please use CMake or ndk-build plugin. Note that gradle-experimental does not work with unified headers yet: use NDK version up to r15 and Android Studio up to version 2.3.

for gradle-experimental plugin, refer to directory other-builds/experimental.

for ndk-build with Android Studio, refer to directory other-builds/ndkbuild.

Samples could also be built with other build systems: These samples use the new CMake Android plugin with C++ support. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.This repository contains Android NDK samples with Android Studio C++ integration.

#Github android ndk samples code

Return (*env)->NewStringUTF(env, 'Hello from JNI !Ĭontent and code samples on this page are subject to the licenses described in the Content License. That is, the string that the function on the Java side had requested. The following line calls the VM API (*env), and passes it a return value: Jobject is a pointer to the implicit this object passed from Hellojni/src/com/example/hellojni/HelloJni.java. This name refers to a Javaįunction called stringFromJNI(), which resides in Java_com_example_hellojni_HelloJni_stringFromJNI.

After the last underscore, append the function name.įollowing these rules, this example uses the function name.

Use underscores in place of forward slashes.

Describe the filepath relative to the top-level source directory.

Java function name and the path to the file containing it.

It is not actually a string, but aĪfter jstring comes the function name, which is based on the The return type, jstring, is a data type defined This declaration corresponds to the native function declared in the Java_com_example_hellojni_HelloJni_stringFromJNI( JNIEnv* env, Returns a string that the Java side requested). The hello-jni.c file is located in hello-jni/jni/. They are presented here in the order in which they are used, rather than by The source code contains three lines of particular interest to the NDK user. It callsĪ function to retrieve a string from the native side, then displays it on the screen. The helloJNI.java file is located in hellojni/src/com/example/hellojni/.

#Github android ndk samples how to

In thisĮxample, the build system builds for all supported architectures.įor more information about the Application.mk file, and how to use it, see This line tells the build system the CPU and architecture against which to build. Library is libhello-jni.so, once the build system adds theįor more information about what the Android.mk file does, and how to use it, see With the name of the shared library to build. The following two lines provide the name of the native source file, along

Of ndk-samples repo, inside android-mk branch. This sample guides you through hello-jni, a minimalĬ/C++ application built with the NDK.