java 7zip_Android使用7-zip库

1.在download页面http://www.7-zip.org/download.html，选Download p7zip for Linux (Posix) (x86 binaries and source code):里的p7zip at SourceForge

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2.“p7zip at sourceForge” 点击进去

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3. Tab里选“Files”页面：

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4.点击上图的“Download p7zip_16.02_src_all.tar.bz2(4.2MB)”进行下载，下载后的文件名为：

"p7zip_16.02_src_all.tar.bz2",解压成"p7zip_16.02"文件夹。

可以打开根目录下的“README”查看帮助文档。

二.在Android Studio中新建Android工程，新建时需要将“Include C++ support”勾上

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当然，你的Android Studio NDK开发环境要提前配置好，需要安装NDK、CMake、LLDB

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CMake: 外部构建工具。如果你准备只使用 ndk-build 的话，可以不使用它。LLDB: Android Studio上面调试本地代码的工具。

1.在project\app\src\main\cpp\下建一子目录“p7zip”,用来存放c/c++代码。

2.将7-zip源码目录 p7zip_16.02 下的C与CPP两个目录拷到工程中的project\app\src\main\cpp\p7zip 目录下

三.打开“p7zip_16.02\DOC\MANUAL\cmdline\index.htm”，查看命令行命令的使用

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点击“Commands”

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然后点击"a",这个是将文件添加到存档的意思，即哪些文件要压缩

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我们可以根据 “7z a archive2.zip .\subdir\*”这个命令示例来执行压缩

然后再回到“Commands”页面，选"x"

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我们可以根据“7z x archive.zip -oc:\soft *.cpp -r”这个命令示例来执行解压缩

四.创建native函数

1.新建java类：ZipUtils.javapublic class ZipUtils {

public static native int excuteCommand(String command);

}

2.根据.java生成.h的本地头文件

在Android studio的“Terminal”命令行面板里执行javah命令，先cd 到project\app\src\main\java路径下，再执行

“javah com.example.wilson.zipdemo.zipdemo.ZipUtils”

在目录树上会立即看到已经生成“com_example_wilson_zipdemo_zipdemo_ZipUtils.h”文件/* DO NOT EDIT THIS FILE - it is machine generated */

#include

/* Header for class com_example_wilson_zipdemo_zipdemo_ZipUtils */

#ifndef _Included_com_example_wilson_zipdemo_zipdemo_ZipUtils

#define _Included_com_example_wilson_zipdemo_zipdemo_ZipUtils

#ifdef __cplusplus

extern "C" {

#endif

* Class: com_example_wilson_zipdemo_zipdemo_ZipUtils

* Method: excuteCommand

* Signature: (Ljava/lang/String;)I

JNIEXPORT jint JNICALL Java_com_example_wilson_zipdemo_zipdemo_ZipUtils_excuteCommand

(JNIEnv *, jclass, jstring);

#ifdef __cplusplus

}

#endif

将它移到 project\app\src\main\cpp\p7zip目录

3.打开 project\app\src\main\cpp\p7zip\CPP\7zip\UI\Console\MainAr.cppint MY_CDECL main

(

#ifndef _WIN32

int numArgs, char *args[]

#endif

)

{

g_ErrStream = &g_StdErr;

g_StdStream = &g_StdOut;

NT_CHECK

NConsoleClose::CCtrlHandlerSetter ctrlHandlerSetter;

int res = 0;

try

{

res = Main2(

#ifndef _WIN32

numArgs, args

#endif

);

}

......

}

这个cpp文件里有main函数，即7-zip的程序入口函数，因为执行命令行命令时，实际上就是执行main函数，所以我们可以根据main函数来编写我们的native调用函数,这样从java端发送一行命令给native端执行，就如在命令行里执行了一条命令一样。

3.在project\app\src\main\cpp\p7zip目录下new一个c/c++ source file,取名“p7zip”,生成p7zip.cpp文件。再编写相关本地代码：//

// Created by wilson on 2017/5/23.

#include "com_example_wilson_zipdemo_zipdemo_ZipUtils.h"

#include "7zTypes.h"

#include

#include "android/log.h"

#define LOG_ENABLE

#ifdef LOG_ENABLE

#define LOG_TAG "p7zip_jni"

#define LOGI(...) do {__android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__);} while(0)

#define LOGD(...) do {__android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__);} while(0)

#define LOGE(...) do {__android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__);} while(0)

#else

...

#endif

#define ARGV_LEN_MAX 256

#define ARGC_MAX 32

extern int MY_CDECL main(

#ifndef _WIN32

int numArgs, const char *args[]

#endif

);

static bool str2args(const char* s,char argv[][ARGV_LEN_MAX],int* argc) {

bool in_token, in_container, escaped;

bool ret;

char container_start, c;

int len, i;

int index = 0;

int arg_count = 0;

ret = true;

container_start = 0;

in_token = false;

in_container = false;

escaped = false;

len = strlen(s);

for (i = 0; i < len; i++) {

c = s[i];

switch (c) {

case ' ':

case '\t':

case '\n':

if (!in_token)

continue;

if (in_container) {

argv[arg_count][index++] = c;

continue;

}

if (escaped) {

escaped = false;

argv[arg_count][index++] = c;

continue;

}

/* if reached here, we're at end of token */

in_token = false;

argv[arg_count++][index] = '\0';

index = 0;

break;

/* handle quotes */

case '\'':

case '\"':

if (escaped) {

argv[arg_count][index++] = c;

escaped = false;

continue;

}

if (!in_token) {

in_token = true;

in_container = true;

container_start = c;

continue;

}

if (in_container) {

if (c == container_start) { //container end

in_container = false;

in_token = false;

argv[arg_count++][index] = '\0';

index = 0;

continue;

} else { //not the same as contain start char

argv[arg_count][index++] = c;

continue;

}

LOGE("Parse Error! Bad quotes\n");

ret = false;

break;

case '\\':

if (in_container && s[i + 1] != container_start) {

argv[arg_count][index++] = c;

continue;

}

if (escaped) {

argv[arg_count][index++] = c;

continue;

}

escaped = true;

break;

default: //normal char

if (!in_token) {

in_token = true;

}

argv[arg_count][index++] = c;

if (i == len - 1) { //reach the end

argv[arg_count++][index++] = '\0';

}

break;

}

*argc = arg_count;

if (in_container) {

LOGE("Parse Error! Still in container\n");

ret = false;

}

if (escaped) {

LOGE("Parse Error! Unused escape (\\)\n");

ret = false;

}

return ret;

}

JNIEXPORT jint JNICALL Java_com_example_wilson_zipdemo_zipdemo_ZipUtils_excuteCommand

(JNIEnv *env, jclass jzz, jstring command){

int ret = -1;

const char* ccommand = (const char*)env->GetStringUTFChars(command,NULL);

LOGI("start[%s]",ccommand);

int argc = 0;

char temp[ARGC_MAX][ARGV_LEN_MAX] = {0};

char* argv[ARGC_MAX] = {0};

if (str2args(ccommand,temp,&argc)==false) {

return 7;

}

for (int i=0;i

argv[i] = temp[i];

LOGD("arg[%d]:[%s]",i,argv[i]);

}

ret = main(argc,(const char**)argv);

LOGI("end[%s]",ccommand);

env->ReleaseStringUTFChars(command,ccommand);

return ret;

}

五.编写CMakeLists.txt

新建工程后，默认使用CMAKE编译C++。编写时特别要注意，不是所有的.cpp都需要，因为有部分是GUI需要的，而且要注意有些预设定的宏必须指定，比如宏：UNIX_USE_WIN_FILE，否则编译会出错(可以参考“\src\main\cpp\p7zip\CPP\ANDROID\7za\jni\Android.mk”).# For more information about using CMake with Android Studio, read the

# documentation: https://d.android.com/studio/projects/add-native-code.html

# Sets the minimum version of CMake required to build the native library.

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 them for you.

# Gradle automatically packages shared libraries with your APK.

set(LOCAL_PATH src/main/cpp/p7zip)

include_directories(${LOCAL_PATH}/C ${LOCAL_PATH}/CPP ${LOCAL_PATH}/CPP/myWindows ${LOCAL_PATH}/CPP/include_windows ${LOCAL_PATH}/CPP/Windows ${LOCAL_PATH}/CPP/Common ${LOCAL_PATH}/CPP/7zip/Common ${LOCAL_PATH}/CPP/7zip/UI/Agent ${LOCAL_PATH}/CPP/7zip/UI/FileManager)

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DANDROID_NDK -fexceptions -DNDEBUG -D_REENTRANT -DENV_UNIX -DEXTERNAL_CODECS -DUNICODE -D_UNICODE -DUNIX_USE_WIN_FILE")

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DANDROID_NDK -fexceptions -DNDEBUG -D_REENTRANT -DENV_UNIX -DEXTERNAL_CODECS -DUNICODE -D_UNICODE -DUNIX_USE_WIN_FILE")

file(GLOB my_c_path ${LOCAL_PATH}/C/*.c)

file(GLOB my_archive_common_path src/main/cpp/p7zip/CPP/7zip/Archive/Common/*.cpp)

file(GLOB my_archive_7z_path src/main/cpp/p7zip/CPP/7zip/Archive/7z/*.cpp)

file(GLOB my_archive_cab_path src/main/cpp/p7zip/CPP/7zip/Archive/Cab/*.cpp)

file(GLOB my_archive_chm_path src/main/cpp/p7zip/CPP/7zip/Archive/Chm/*.cpp)

file(GLOB my_archive_iso_path src/main/cpp/p7zip/CPP/7zip/Archive/Iso/*.cpp)

file(GLOB my_archive_nsis_path src/main/cpp/p7zip/CPP/7zip/Archive/Nsis/*.cpp)

file(GLOB my_archive_rar_path src/main/cpp/p7zip/CPP/7zip/Archive/Rar/*.cpp)

file(GLOB my_archive_tar_path src/main/cpp/p7zip/CPP/7zip/Archive/Tar/*.cpp)

file(GLOB my_archive_udf_path src/main/cpp/p7zip/CPP/7zip/Archive/Udf/*.cpp)

file(GLOB my_archive_vim_path src/main/cpp/p7zip/CPP/7zip/Archive/Wim/*.cpp)

file(GLOB my_archive_zip_path src/main/cpp/p7zip/CPP/7zip/Archive/Zip/*.cpp)

file(GLOB my_7zip_common_path src/main/cpp/p7zip/CPP/7zip/Common/*.cpp)

file(GLOB my_7zip_crypto_path src/main/cpp/p7zip/CPP/7zip/Crypto/*.cpp)

file(GLOB my_7zip_ui_path src/main/cpp/p7zip/CPP/7zip/UI/Console/*.cpp)

file(GLOB my_common_path src/main/cpp/p7zip/CPP/Common/*.cpp)

add_library( # Sets the name of the library.

p7zip

# Sets the library as a shared library.

SHARED

# Provides a relative path to your source file(s).

${my_c_path}

${my_archive_common_path}

${my_archive_7z_path}

${my_archive_cab_path}

${my_archive_chm_path}

${my_archive_iso_path}

${my_archive_nsis_path}

${my_archive_rar_path}

${my_archive_tar_path}

${my_archive_udf_path}

${my_archive_vim_path}

${my_archive_zip_path}

${my_7zip_common_path}

${my_7zip_crypto_path}

${my_7zip_ui_path}

${my_common_path}

src/main/cpp/p7zip/CPP/7zip/Archive/ApmHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/ArHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/ArjHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/Bz2Handler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/ComHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/CpioHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/CramfsHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/DeflateProps.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/DmgHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/ElfHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/ExtHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/FatHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/FlvHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/GptHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/GzHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/HandlerCont.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/HfsHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/IhexHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/LzhHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/LzmaHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/MachoHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/MbrHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/MslzHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/MubHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/NtfsHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/PeHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/PpmdHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/QcowHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/RpmHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/SplitHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/SquashfsHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/SwfHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/UefiHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/VdiHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/VhdHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/VmdkHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/XarHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/XzHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Archive/ZHandler.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Bcj2Coder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Bcj2Register.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BcjCoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BcjRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BitlDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BranchMisc.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BranchRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ByteSwap.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BZip2Crc.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BZip2Decoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BZip2Encoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/BZip2Register.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/CodecExports.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/CopyCoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/CopyRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Deflate64Register.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/DeflateDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/DeflateEncoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/DeflateRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/DeltaFilter.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ImplodeDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ImplodeHuffmanDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzhDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Lzma2Decoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Lzma2Encoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Lzma2Register.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzmaDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzmaEncoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzmaRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzmsDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzOutWindow.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/LzxDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/PpmdDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/PpmdEncoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/PpmdRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/PpmdZip.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/QuantumDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Rar1Decoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Rar2Decoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Rar3Decoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Rar3Vm.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/Rar5Decoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/RarCodecsRegister.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ShrinkDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/XpressDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ZDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ZlibDecoder.cpp

src/main/cpp/p7zip/CPP/7zip/Compress/ZlibEncoder.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/ArchiveCommandLine.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/ArchiveExtractCallback.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/ArchiveName.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/ArchiveOpenCallback.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/Bench.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/DefaultName.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/EnumDirItems.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/Extract.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/ExtractingFilePath.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/HashCalc.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/LoadCodecs.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/OpenArchive.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/PropIDUtils.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/SetProperties.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/SortUtils.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/TempFiles.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/Update.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/UpdateAction.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/UpdateCallback.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/UpdatePair.cpp

src/main/cpp/p7zip/CPP/7zip/UI/Common/UpdateProduce.cpp

src/main/cpp/p7zip/CPP/Windows/COM.cpp

src/main/cpp/p7zip/CPP/Windows/DLL.cpp

src/main/cpp/p7zip/CPP/Windows/ErrorMsg.cpp

src/main/cpp/p7zip/CPP/Windows/FileDir.cpp

src/main/cpp/p7zip/CPP/Windows/FileFind.cpp

src/main/cpp/p7zip/CPP/Windows/FileIO.cpp

src/main/cpp/p7zip/CPP/Windows/FileName.cpp

src/main/cpp/p7zip/CPP/Windows/PropVariantConv.cpp

src/main/cpp/p7zip/CPP/Windows/PropVariant.cpp

src/main/cpp/p7zip/CPP/Windows/PropVariantUtils.cpp

#src/main/cpp/p7zip/CPP/Windows/Registry.cpp

src/main/cpp/p7zip/CPP/Windows/Synchronization.cpp

src/main/cpp/p7zip/CPP/Windows/System.cpp

src/main/cpp/p7zip/CPP/Windows/TimeUtils.cpp

src/main/cpp/p7zip/CPP/myWindows/myAddExeFlag.cpp

src/main/cpp/p7zip/CPP/myWindows/mySplitCommandLine.cpp

src/main/cpp/p7zip/CPP/myWindows/wine_date_and_time.cpp

src/main/cpp/p7zip/p7zip.cpp )

# Searches for a specified prebuilt library and stores the path as a

# variable. Because CMake includes system libraries 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 this

# build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( # Specifies the target library.

p7zip

# Links the target library to the log library

# included in the NDK.

${log-lib} )

六、配置模块的build.gradle：apply plugin: 'com.android.application'

android {

compileSdkVersion 25

buildToolsVersion "25.0.3"

defaultConfig {

applicationId "com.example.wilson.zipdemo.zipdemo"

minSdkVersion 19

targetSdkVersion 25

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

externalNativeBuild {

cmake {

cppFlags ""

}

ndk {

// Specifies the ABI configurations of your native

// libraries Gradle should build and package with your APK.

abiFilters 'armeabi-v7a'

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

}

debug {

jniDebuggable true

}

externalNativeBuild {

cmake {

path "CMakeLists.txt"

}

sourceSets.main {

jniLibs.srcDir 'src/main/libs'

}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {

exclude group: 'com.android.support', module: 'support-annotations'

})

compile 'com.android.support:appcompat-v7:25.3.1'

compile 'com.android.support.constraint:constraint-layout:1.0.2'

testCompile 'junit:junit:4.12'

}

上面只生成armeabi-v7a的so。

七、编译：

注意：在编译的过程中.有两个cpp会报错：src/main/cpp/p7zip/CPP/7zip/Archive/7z 目录下的：

7zHandler.cpp与7zExtract.cpp，都会报：

undefined reference to 'g_ExternalCodecs' 的错误

经查，主要由 src/main/cpp/p7zip/CPP/7zip/Common/CreateCoder.h中宏定义#define EXTERNAL_CODECS_VARS2 (__externalCodecs.IsSet() ? &__externalCodecs : &g_ExternalCodecs)

将其改为：#define EXTERNAL_CODECS_VARS2 ( &__externalCodecs)

即可，因为'g_ExternalCodecs' 与GUI相关，我们只用到命令行

八、测试

在manifest文件中要加上权限：

ZipUtils.java：package com.example.wilson.zipdemo.zipdemo;

public class ZipUtils {

public static native int excuteCommand(String command);

}

ZipProcess.java：package com.example.wilson.zipdemo.zipdemo;

import android.app.ProgressDialog;

import android.content.Context;

import android.os.Handler;

import android.os.Message;

import android.widget.Toast;

public class ZipProcess {

0 No error

1 Warning (Non fatal error(s)). For example, one or more files were locked by some other application,

so they were not compressed.

2 Fatal error

7 Command line error

8 Not enough memory for operation

255 User stopped the process

private static final int RET_SUCCESS = 0;

private static final int RET_WARNING = 1;

private static final int RET_FAULT = 2;

private static final int RET_COMMAND = 7;

private static final int RET_MEMORY = 8;

private static final int RET_USER_STOP = 255;

Context context = null;

Thread thread = null;

ProgressDialog dialog = null;

Handler handler = null;

String command = null;

public ZipProcess(Context context, String command) {

// TODO Auto-generated method stub

this.context = context;

this.command = command;

dialog = new ProgressDialog(context);

dialog.setTitle(R.string.progress_title);

dialog.setMessage(context.getText(R.string.progress_message));

dialog.setCancelable(false);

handler = new Handler(new Handler.Callback() {

@Override

public boolean handleMessage(Message msg) {

// TODO Auto-generated method stub

dialog.dismiss();

int retMsgId = R.string.msg_ret_success;

switch (msg.what) {

case RET_SUCCESS:

retMsgId = R.string.msg_ret_success;

break;

case RET_WARNING:

retMsgId = R.string.msg_ret_warning;

break;

case RET_FAULT:

retMsgId = R.string.msg_ret_fault;

break;

case RET_COMMAND:

retMsgId = R.string.msg_ret_command;

break;

case RET_MEMORY:

retMsgId = R.string.msg_ret_memmory;

break;

case RET_USER_STOP:

retMsgId = R.string.msg_ret_user_stop;

break;

default:

break;

}

Toast.makeText(ZipProcess.this.context, retMsgId, Toast.LENGTH_SHORT).show();

return false;

}

});

thread = new Thread(){

@Override

public void run() {

// TODO Auto-generated method stub

int ret = ZipUtils.excuteCommand(ZipProcess.this.command);

handler.sendEmptyMessage(ret); //send back return code

super.run();

}

};

}

void start(){

dialog.show();

thread.start();

}

MainActivity.java:package com.example.wilson.zipdemo.zipdemo;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

public class MainActivity extends AppCompatActivity {

// Used to load the 'native-lib' library on application startup.

static {

System.loadLibrary("p7zip");

}

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void compress(View v) {

compressProcess();

}

public void decompress(View v) {

decompressProcess();

}

private void compressProcess(){

StringBuilder sbCmd = new StringBuilder("7z a ");

// sbCmd.append("-t7z "); //7z a -t7z = 指定压缩后的文件类型

sbCmd.append("'/storage/emulated/0/7z_demo/7zdemo.zip' "); //7z a '/storage/emulated/0/7z_demo/7zdemo.zip'

// sbCmd.append("'/storage/emulated/0/wifi_config.log' "); //7z a '//storage/emulated/0/7z_demo/7zdemo.zip' '/storage/emulated/0/wifi_config.log' = 文件的压缩

sbCmd.append("'/storage/emulated/0/zp_7100' "); //7z a '//storage/emulated/0/7z_demo/7zdemo.zip' '/storage/emulated/0/zp_7100' = 文件夹的压缩

new ZipProcess(MainActivity.this, sbCmd.toString()).start();

}

private void decompressProcess() {

StringBuilder sbCmd = new StringBuilder("7z ");

sbCmd.append("x "); //7z x

//input file path

sbCmd.append("'/storage/emulated/0/7z_demo/7zdemo.zip' "); //7z x '/storage/emulated/0/7z_demo/7zdemo.zip'

//output path

sbCmd.append("'-o" + "/storage/emulated/0/' "); //7z x '/storage/emulated/0/7z_demo/7zdemo.zip' '-o/storage/emulated/0/'

sbCmd.append("-aoa "); //-aoa Overwrite All existing files without prompt.

//7z x '/storage/emulated/0/7z_demo/7zdemo.zip' '-o/storage/emulated/0/' -aoa

new ZipProcess(MainActivity.this, sbCmd.toString()).start();

}

activity_main.xml：<?xml version="1.0" encoding="utf-8"?>

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:gravity="center_horizontal"

tools:context="com.example.wilson.zipdemo.zipdemo.MainActivity">

android:layout_width="200dp"

android:layout_height="100dp"

android:text="压缩"

android:onClick="compress"/>

android:layout_width="200dp"

android:layout_height="100dp"

android:text="解压缩"

android:onClick="decompress"

tools:layout_editor_absoluteY="111dp"

tools:layout_editor_absoluteX="0dp" />

最后，在小米5S上测试成功。

4d164d012336

java 7zip_Android使用7-zip库

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