- title: Android NDK之增量更新
- public class Diffutils {
- static {
- System.loadLibrary("native-lib");
- }
- /**
- * @param oldPath 旧的安装包路径
- * @param newPath 新的安装包路径
- * @param patchPath 差分包路径
- * @return 生成的结果
- */
- public static native int generateDiffApk(String oldPath, String newPath, String patchPath);
- /**
- * @param oldPath 旧的安装包路径
- * @param newPath 新的安装包路径
- * @param patchPath 差分包路径
- * @return 生成的结果
- */
- public static native int mergeDiffApk(String oldPath, String newPath, String patchPath);
- }
)
- # 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.c )
- #include src/main/cpp/include目录下的所有文件
- include_directories(src/main/cpp/include)
- # 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} )
- #include <jni.h>
- #include "include/bsdiff.c"
- #include "include/bspatch.c"
- JNIEXPORT jint JNICALL
- Java_com_nick_bsdiff_Diffutils_generateDiffApk(JNIEnv *env, jclass type, jstring oldPath_,
- jstring newPath_, jstring patchPath_) {
- int argc = 4;
- char *argv[argc];
- argv[0] = (char *) "bspatch";
- argv[1] = (char *) (*env)->GetStringUTFChars(env, oldPath_, 0);
- argv[2] = (char *) (*env)->GetStringUTFChars(env, newPath_, 0);
- argv[3] = (char *) (*env)->GetStringUTFChars(env, patchPath_, 0);
- jint result = generateDiffApk(argc, argv);
- (*env)->ReleaseStringUTFChars(env, oldPath_, argv[1]);
- (*env)->ReleaseStringUTFChars(env, newPath_, argv[2]);
- (*env)->ReleaseStringUTFChars(env, patchPath_, argv[3]);
- return result;
- }
- JNIEXPORT jint JNICALL
- Java_com_nick_bsdiff_Diffutils_mergeDiffApk(JNIEnv *env, jclass type, jstring oldPath_,
- jstring newPath_, jstring patchPath_) {
- int argc = 4;
- char *argv[argc];
- argv[0] = (char *) "bspatch";
- argv[1] = (char *) (*env)->GetStringUTFChars(env, oldPath_, 0);
- argv[2] = (char *) (*env)->GetStringUTFChars(env, newPath_, 0);
- argv[3] = (char *) (*env)->GetStringUTFChars(env, patchPath_, 0);
- printf("old apk = %s \n", argv[1]);
- printf("patch = %s \n", argv[3]);
- printf("new apk = %s \n", argv[2]);
- jint result = mergeDiffApk(argc, argv);
- (*env)->ReleaseStringUTFChars(env, oldPath_, argv[1]);
- (*env)->ReleaseStringUTFChars(env, newPath_, argv[2]);
- (*env)->ReleaseStringUTFChars(env, patchPath_, argv[3]);
- return result;
- }
来源: http://www.cnblogs.com/mc-ksuu/p/6481730.html