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Android NDK

Include C++ Support

Top / Include C++ Support

Android Studio 2.2で追加

メソッド追加

• Android Studio/プロジェクト/app/src/main/java/com/example/test/myapplication/MainActivity.java

増えるファイル

• Android Studio/プロジェクト/app/src/main/cpp/native-lib.cpp

• Android Studio/プロジェクト/app/CMakeLists.txt

  # Sets the minimum version of CMake required to build the native
  # library. You should either keep the default value or only pass a
  # value of 3.4.0 or lower.
  
  cmake_minimum_required(VERSION 3.4.1)
  
  # Creates and names a library, sets it as either STATIC
  # or SHARED, and provides the relative paths to its source code.
  # You can define multiple libraries, and CMake builds it for you.
  # Gradle automatically packages shared libraries with your APK.
  
  add_library( # Sets the name of the library.
               native-lib
  
               # Sets the library as a shared library.
               SHARED
  
               # Provides a relative path to your source file(s).
               # Associated headers in the same location as their source
               # file are automatically included.
               src/main/cpp/native-lib.cpp )
  
  # Searches for a specified prebuilt library and stores the path as a
  # variable. Because system libraries are included in the search path by
  # default, you only need to specify the name of the public NDK library
  # you want to add. CMake verifies that the library exists before
  # completing its build.
  
  find_library( # Sets the name of the path variable.
                log-lib
  
                # Specifies the name of the NDK library that
                # you want CMake to locate.
                log )
  
  # Specifies libraries CMake should link to your target library. You
  # can link multiple libraries, such as libraries you define in the
  # build script, prebuilt third-party libraries, or system libraries.
  
  target_link_libraries( # Specifies the target library.
                         native-lib
  
                         # Links the target library to the log library
                         # included in the NDK.
                         ${log-lib} )
  

設定

• Android Studio/プロジェクト/app/build.gradle

  android {
      defaultConfig {
          externalNativeBuild {
              cmake {
                  cppFlags ""
              }
          }
      }
      externalNativeBuild {
          cmake {
              path "CMakeLists.txt"
          }
      }

メモ

• Instant Run? is disabled when using external native build.
• Gradle sync failed: Unable to start the daemon process.

関連

• Android Studio/プロジェクト/NDK