C/C++ with Android Studio version 2.2

Question

With Android Studio 2.2, and the new C++ support they added; can I now write and compile inside android studio, or do I need to compile and import my libraries separately

Answer 1

Short answer: Yes, you can.

Here is what you can do 1
1) In Android Studio, right click on your module ==> New ==> Package
2) name the package (folder) cpp (or you can name it jni )
3) you will see the cpp directory on the left.
4) You can create .cpp , .h and other files within that folder.

Nowm you have to tell gradle how to build that.
You need install CMake . 2
1) Go to Preferences ==> Android SDK ==> SDK Tools ==> CMake
2) Select that and click Apply and Ok

Now, you need to add a CMakeLists.txt file to your project.
Path: my_project/app/CMakeLists.txt

This is what the file should look like:

# https://developer.android.com/studio/projects/add-native-code.html#create-cmake-script


# Minimum version of CMake
cmake_minimum_required(VERSION 3.4.1)


# adding CEC library
# add_library structure:    add_library(lib_name  lib_type_STATIC_or_SHARED  source_file_path)
add_library(my_lib_name SHARED src/main/jni/my_cpp_file.cpp)


# include_directories is to provide the path to you native lib code
# include_directories structure:    include_directories(native_lib_folder_path)
include_directories(src/main/jni/)


# adding Android log library
# find_library is used to find NDK API libraries (built in NDK libs)
# find_library structure:   find_library(name_you_want_to_call_the_lib  lib_name_in_ndk_api)
find_library(log-lib log)


# linking log lib to our native lib
# once you find the library, you have to link that library with your native library
# target_link_libraries structure:  target_link_libraries(you_native_lib  lib_found_using_find_library)
target_link_libraries(my_lib_name ${log-lib})

And final step: add the following to your build.gradle :

externalNativeBuild {
    cmake {
        path 'CMakeLists.txt'
    }
}

You should be able to build it now.

Answer 2

th3pat3l's answer is works fine, but the official documentation for how to add C++ to a project is a little different. Here it is:

https://developer.android.com/studio/projects/add-native-code.html#create-sources

The main difference is the use of file->new->package. The package concept is for adding a java package and has a side effect of creating a folder.

You can do the same thing more directly by switching to project view and just creating the folder where you want it in the directory.