Android 动态库(.so)的生成.doc

路径定义以下用到的路径如下，如配有环境变量可省略:sclpath:Sourcery_CodeBench_Lite_for_ARM_GNU_Linux安装路径filepath:文件的路径jdkpath:jdk路径1安装jdk安装好后里面有个include文件夹，向里添加jawt_md.h和jni_md.h文件2下载Sourcery CodeBench Lite Edition for ARM3编译java文件例:javac filepath NativeJniAdder.javapackage com.example.dynamiclibexample;import android.util.Log;public class NativeJniAdder static try Log.i(JNI, Trying to load libNativeJniAdder.so);System.loadLibrary(NativeJniAdder); catch (UnsatisfiedLinkError ule) Log.e(JNI, WARNING:Gould not load libNativeJniAdder.so);public static native int calculate(int digit_1, int digit_2);4生成.h文件例: javah filepathom.example.dynamiclibexample.NativeJniAdder4编写c/c+文件通过上面生成的.h文件编写c/c+文件注：函数名字格式：Java_包名_类名_函数名#include com_example_dynamiclibexample_NativeJniAdder.hJNIEXPORT jint JNICALL Java_com_example_dynamiclibexample_NativeJniAdder_calculate(JNIEnv *env, jclass c, jint digit_1, jint digit_2) int sum = digit_1 + digit_2;return sum;5生成中间文件(.o)利用(.h)文件和(.c)文件生成(.o)文件例:sclpathbinarm-none-linux-gnueabi-gcc -I jdkpathinclude -I jdkpathinclude -fpic -nostdlib -c filepathcom_example_dynamiclibexample_NativeJniAdder.c6在cmd下检验(.o)文件例:sclpatharm-none-linux-gnueabi-ld filepathcom_example_dynamiclibexample_NativeJniAdder.o如果提示有error的，说明编译出问题了7生成(.so)文件例:sclpatharm-none-linux-gnueabi-ld -T sclpatharm-none-linux-gnueabilibldscriptsarmelf_linux_eabi.xsc -shared -o filepathlibN