一，前期準(zhǔn)備
首先下載Swig這個(gè)工具?
然后配置swig的環(huán)境變量
Swig這個(gè)工具在本項(xiàng)目中我們使用它來生成和第三方交互的java文件和swig jni庫，在此過程中在整個(gè)項(xiàng)目中我們配置好Swig文件之后，編輯好一個(gè)BuildJava.bat文件
創(chuàng)建BuildJava.bat文件步驟如下：
屏幕空白處任意位置單擊鼠標(biāo)右鍵，然后點(diǎn)擊新建，再然后點(diǎn)擊文本文檔
@echo off
set correctpath=%SMART_PATH%
set "correctpath=%correctpath:/=%"
rem set "var=%var://=/%"
set "correctpath=%correctpath:\=%"
echo %correctpath%
set correctpath2=%SMART_PATH%
set "correctpath2=%correctpath2://=/%"
echo %correctpath2%
rem iobject.h中的CLASS_DECLARE后面加上了;
set java_SOURCE=%correctpath%\swig\smart_swig\java\src
if not exist %correctpath%\swig\smart_swig\java\src (
mkdir %correctpath%\swig\smart_swig\java\src
echo "create dirctory for source"
)
del /f /s /q %correctpath%\swig\smart_swig\java\src*.*
swig.exe -java -c++ -package com.example.zhang.smart_kernel -outdir %SMART_PATH%\swig\smart_swig\java\src\ -o %SMART_PATH%\swig\smart_swig\java\src\smart_core_wrap.cxx -I%SMART_PATH%/include
%SMART_PATH%\swig\smart_swig\swig\swig_smart.i
Swig 參數(shù)示例如下：
swig.exe?-c++ -namespace?-outdir <c. .cs輸出路徑> -o -I 參數(shù)細(xì)節(jié)：
-package 后面跟Java的包名。
目標(biāo)語言 可以是-csharp 表示c# -java 表示java等
-namespace?主要將.cs文件約束到同一個(gè)命名空間上，方便管理和調(diào)用
則是設(shè)置生成的.cs文件的輸出路徑
xxx_wrap.cxx的生成路徑，同時(shí)xxx_wrap.h也會(huì)在此此路徑的目錄下
-I 表示include文件的路徑，就是包含頭文件的路徑 注意-I必須緊緊的連著include的路徑
表示.i文件的路徑
當(dāng)然BuildJava.bat的前面部分已經(jīng)有同事配置好了的。
到此，我們只需要執(zhí)行BuildJava.bat就行了。
二，通過swig調(diào)用第三方庫
我們將在根目錄swig文件夾下生成的javak拷貝到Android studio下Java路徑下。
然后將swig目錄下java文件夾下的*wrap.h和wrap.cxx兩個(gè)文件用Android studio生成動(dòng)態(tài)庫。
將我們需要調(diào)用的第三方庫連同剛才用*wrap.h和wrap.cxx兩個(gè)文生成的swig的jni庫一起拷貝到在Android studio工程目錄libs下創(chuàng)建的arm64-v8a目錄下。
接著在build.gradlet 文件 android 下添加如下的兩行代碼，把所有庫的路徑寫進(jìn)去，如下圖所示：
然后在CMakeLists.txt下配置Cmake,如下：
cmake_minimum_required(VERSION 2.8.1)
project(smart_kernel)
include_directories(src/main/cpp)
include_directories(C:/Users/zhang/Desktop/smartGIS/include)
#include_directories(C:/Users/zhang/Desktop/smartGIS/include/command)
include_directories(C:/Users/zhang/Desktop/smartGIS/src/smart_kernel/src/coordinate)
include_directories(C:/Users/zhang/Desktop/smartGIS/src/smart_kernel/src/map)
include_directories(C:/Users/zhang/Desktop/smartGIS/src/smart_kernel/src/app)
include_directories(C:/Users/zhang/Desktop/smartGIS/src/smart_kernel/src/providerss)
include_directories(C:/Users/zhang/Desktop/smartGIS/src/smart_kernel/src/symbology)
include_directories(C:/Users/zhang/Desktop/smartGIS/src/smart_kernel/src/providers/sqlite)
include_directories(G:/Workspace/Smart_Gis_android/gdal_arm64_v8a/include)
include_directories(G:/Workspace/Smart_Gis_android/proj.4_arm64_va8/include)
include_directories(G:/Workspace/Smart_Gis_android/geos_arm64_va8/include)
set(PROJECT_SOURCE_DIR "C:/Users/zhang/Desktop/smartGIS/src/smart_kernel")
set(LIBRARY_OUTPUT_PATH "F:/smart_kernel")
link_directories( G:/Smart_gis_android_libs)
include_directories($ENV{SMART_PATH}/include F:/soft/gis_soft/smart_core/smart_core/src/kernel)
#set(PROJECT_SOURCE_DIR "C:/Users/zhang/Desktop/smartGIS/src/smart_kernel")
#smart_kernel
aux_source_directory(${PROJECT_SOURCE_DIR}/src SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/app APP_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/coordinate COORDINATE_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/geometry GEOMETRY_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/map MAP_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/providers PROVIDERS_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/registry REGISTRY_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/render RENDER_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/symbology SYMBOLOGY_SRC_LIST)
aux_source_directory(${PROJECT_SOURCE_DIR}/src/providers/sqlite SQLITE_SRC_LIST)
#aux_source_directory(src/main/cpp SMART_GIS_SWIG_SOURCE)
list(APPEND SRC_LIST ${APP_SRC_LIST} ${COORDINATE_SRC_LIST} ${GEOMETRY_SRC_LIST} ${MAP_SRC_LIST} ${PROVIDERS_SRC_LIST} ${REGISTRY_SRC_LIST} ${RENDER_SRC_LIST} ${SYMBOLOGY_SRC_LIST} ${SQLITE_SRC_LIST})
#add_definitions(-DSMART_KERNEL_EXPORT)
#add_library(${PROJECT_NAME} SHARED ${SRC_LIST} )
MESSAGE(${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
#set(COPYITEM test_res)
add_custom_target(CopyTask ALL DEPENDS COPY_RES)
#file(TO_NATIVE_PATH "G:/Smart_gis_android_libs/*.${CMAKE_SHARED_LIBRARY_SUFFIX}" copy_source )
#set(copy_dest "$<LIBRARY_OUTPUT_PATH:${PROJECT_NAME}>")
aux_source_directory(${PROJECT_SOURCE_DIR}/src SRC_LIST)
add_definitions(-DSMART_KERNEL_EXPORT)
add_library(${PROJECT_NAME} SHARED ${SRC_LIST})
add_library(smart_gis_swig SHARED src/main/cpp/smart_core_wrap.cxx)
target_link_libraries(${PROJECT_NAME} gdalconstjni gdaljni ogrjni osrjni proj geos-3.6.3 smart_core)
ADD_CUSTOM_COMMAND(TARGET ${PROJECT_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_directory "G:/Smart_gis_android_libs" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
在這里千萬要注意最重要的一點(diǎn)是我們要將所有的第三方庫通過Cmake拷貝到app-debug.apk這個(gè)APK的libs 下的 arm64-v8a文件夾下，該路徑可以通過解壓app-debug.apk這個(gè)APK獲得。
上圖所示 F:\smart_kernel為我的該Android項(xiàng)目存放路徑。
該CMake 語句嚴(yán)格按照如下格式編寫：
ADD_CUSTOM_COMMAND(TARGET ${PROJECT_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_directory? "G:/Smart_gis_android_libs" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
其中-E copy_directory 之后的選項(xiàng) 是庫存放目錄 最后一個(gè)選項(xiàng)是需要拷貝到的目錄。
