Three ways to record Android studio JNI development (recommended)

  first step: createnaticeLocal method
       Step 2: In engineeringApp模块目录下createjniFolders
       Step 3: existjinFolders中create.cThe endingcdocument,writecCode,existc语言中定义existJavaCode中create的Local method(naticemethod)
        ,To followjni的规范定义method(Java_Package name_Class Name_naticemethod名,其中Package name中的点用_replace)
       Step 4: existjniFolders中createdocument,documentThe content is as follows
       LOCAL_PATH := $(call my-dir)
       include $(CLEAR_VARS)
       LOCAL_MODULE  := hello #Specify the generated library name lib library name.so       LOCAL_SRC_FILES :=  #Specify the C language source file to be compiled. Multiple spaces are arranged       include $(BUILD_SHARED_LIBRARY) #Specify the generated library type (static library dynamic library independent program) dynamic library       Step 5: existsrcFolders下create,The content is as follows
       APP_ABI := all #Specify the generation library platform       Step 6: CompilationcCode生成soLibrary,arrivecCode所exist的目录里面按住shiftRight-click,
        选中exist此处打开命令窗口(First of all, you have tondk-build配置arrive环境变量中),implementndk-build,
        The configuration will be automatically generatedsoLibrary
       Step 7: existAppModule configurationjinLibs的路径implementlibs
             sourceSets{
              main{
                    =[“libs”]
                 }
                }
        Step 8: 静态Code块加载
            Static{
                    (“hello”)
               }
       Step 9:run

first step: createnaticeLocal method
Step 2: SelectAPPClick the mouse to select the modulenew->folder->JNI folder->finish
Will be heremainGenerate a directoryjniFolders
Step 3: existjinFolders中create.cThe endingcdocument,writecCode,existc语言中定义existJavaCode中create的Local method(naticemethod),
To followjni的规范定义method(Java_Package name_Class Name_naticemethod名,其中Package name中的点用_replace)
Step 4: exist模块的 deflautConfigConfigure library name in the tag and specify the generated platform
 ndk{
   moduleName “hello”//The generated library name   abiFilters “armeabi”,”armeabi-v7a”,”x86”//The generated platform }
Step 5: 静态Code块加载
  Static{
     (“hello”)
  }
Step 6:run

first step: createnaticeLocal method
Step 2:existmain下面createcppFolders,再existcppFolders中穿件cSource File
  according tojniStandardized writingjavaCalled method
Step 3:create文件,The generated library name and connected library name are configured in it.cThe path to the code(Generate method
,To create a new project, you must selectinclude c++ suppot,Select之后create的工程中就会有文件,
And there isGoogleExample given)
Step 4: Right click on the mouse when selecting the module,Selectlink c++ progect with gradlePopup laterCmakeDialog Box,chooseCMakeWay,
After finding the generated moduleok
If an error is reported, check whether the configuration is wrong.,If there is no error, it will be added successfully,会exist生成externalNativeBuildLabel
Step 5:Configuration generatedsoLibrary Platform,existdeflautConfigLabel下面createexternalNativeBuildLabel
 externalNativeBuild{
  cmake{
    abiFilters “armeabi”,”armeabi-v7a”,”x86”//The generated platform  }
 }
配置完成用静态代码块的Way加载soLibrary
  Static{
    (“hello”)
  }

1, No implementation found for
  It means that the function is not implemented,
            1,examinecIs the method correct?(according tojnispecification)
            2,Is the library loaded statically,Is the library name written incorrectly

2, > Error: Your project contains C++ files but it is not using a supported native build system.
Consider using CMake or ndk-build integration with the stable Android Gradle plugin:

It probably means yoursndkNot the latest

          1,Download the latest versionndk
          2,Configure in
          =true(Permitted to use outdatedndk)