for the first time, using the FFmpeg framework, I compiled the source code on deepin and got the include and so files. Then copy to win10 , and create the project as shown in figure

then I added the following code to CMarkLists.txt :

-sharp For more information about using CMake with Android Studio, read the
-sharp documentation: https://d.android.com/studio/projects/add-native-code.html

-sharp Sets the minimum version of CMake required to build the native library.
include_directories(libs/include)
set(DIR ../../../../libs)
cmake_minimum_required(VERSION 3.4.1)

-sharp Creates and names a library, sets it as either STATIC
-sharp or SHARED, and provides the relative paths to its source code.
-sharp You can define multiple libraries, and CMake builds them for you.
-sharp Gradle automatically packages shared libraries with your APK.

add_library( -sharp Sets the name of the library.
             native-lib

             -sharp Sets the library as a shared library.
             SHARED

             -sharp Provides a relative path to your source file(s).
             src/main/cpp/native-lib.cpp )


add_library(avcodec SHARED IMPORTED)
set_target_properties(avcodec PROPERTIES IMPORTED_LOCATION ${DIR}/armeabi-v7a/libavcodec.so)

add_library(avformat SHARED IMPORTED)
set_target_properties(avformat PROPERTIES IMPORTED_LOCATION ${DIR}/armeabi-v7a/libavformat.so)

add_library(avutil SHARED IMPORTED)
set_target_properties(avutil PROPERTIES IMPORTED_LOCATION ${DIR}/armeabi-v7a/libavutil.so)

add_library(swresample SHARED IMPORTED)
set_target_properties(swresample PROPERTIES IMPORTED_LOCATION ${DIR}/armeabi-v7a/libswresample.so)

add_library(swscale SHARED IMPORTED)
set_target_properties(swscale PROPERTIES IMPORTED_LOCATION ${DIR}/armeabi-v7a/libswscale.so)

add_library(avfilter SHARED IMPORTED)
set_target_properties(avfilter PROPERTIES IMPORTED_LOCATION ${DIR}/armeabi-v7a/libavfilter.so)


-sharp Searches for a specified prebuilt library and stores the path as a
-sharp variable. Because CMake includes system libraries in the search path by
-sharp default, you only need to specify the name of the public NDK library
-sharp you want to add. CMake verifies that the library exists before
-sharp completing its build.

find_library( -sharp Sets the name of the path variable.
              log-lib

              -sharp Specifies the name of the NDK library that
              -sharp you want CMake to locate.
              log )

-sharp Specifies libraries CMake should link to your target library. You
-sharp can link multiple libraries, such as libraries you define in this
-sharp build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( -sharp Specifies the target library.
                       native-lib
                       avfilter
                       avcodec
                       avformat
                       avutil
                       swresample
                       swscale
                       -sharp Links the target library to the log library
                       -sharp included in the NDK.
                       ${log-lib} )

the following code has been added to gradle.build :

apply plugin: "com.android.application"

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "cn.lxw.ffmpeg"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"


        sourceSets{
            main{
                jniLibs.srcDirs = ["libs"]
            }
        }

        externalNativeBuild {
            cmake {
                cppFlags ""
                abiFilters "armeabi-v7a"
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }
    externalNativeBuild {
        cmake {
            path "CMakeLists.txt"
        }
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.android.support:appcompat-v7:28.0.0"
    implementation "com.android.support.constraint:constraint-layout:1.1.3"
    testImplementation "junit:junit:4.12"
    androidTestImplementation "com.android.support.test:runner:1.0.2"
    androidTestImplementation "com.android.support.test.espresso:espresso-core:3.0.2"
}

then call the relevant method in one of the default cpp files of the project.
native-lib.cpp

-sharpinclude <jni.h>
-sharpinclude <string>
-sharpinclude <libavcodec/avcodec.h>

extern "C" JNIEXPORT jstring JNICALL
Java_cn_lxw_ffmpeg_MainActivity_stringFromJNI(
        JNIEnv* env,
        jobject /* this */) {
    std::string hello = avcodec_configuration();
    return env->NewStringUTF(hello.c_str());
}

then I tried to run the project, but the following error occurred:

Build native-lib armeabi-v7a
ninja: error: "../../../../libs/armeabi-v7a/libavfilter.so", needed by "../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libnative-lib.so", missing and no known rule to make it
:app:externalNativeBuildDebug FAILED
:app:buildInfoGeneratorDebug

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ":app:externalNativeBuildDebug".
> Build command failed.
  Error while executing process D:\Dev\sdk\cmake\3.6.4111459\bin\cmake.exe with arguments {--build D:\Dev\WorkSpace\FFmpeg\app\.externalNativeBuild\cmake\debug\armeabi-v7a --target native-lib}
  ninja: error: "../../../../libs/armeabi-v7a/libavfilter.so", needed by "../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libnative-lib.so", missing and no known rule to make it

could you tell me how to fix it? thank you!