如果无法将 *.so 库从包含的 *.jar 打包到最终的 *.apk 中，我会为自己解决这个问题。
我编写了 LibraryLoader，它：
尝试使用 System.loadLibrary() 加载库。
如果失败，则在应用程序存储中加载搜索库，如果找到则使用 System.load() 加载它。
如果在应用程序存储中没有找到库，它会找到 .apk 文件，在那里进行搜索，如果加载器找到库 - 将其复制到应用程序存储，然后使用 System.load() 加载它。
在这里发布代码 - 可能对某人有帮助。
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import android.content.Context;
import android.util.Log;
public class SharedLibraryLoader
{
private static Context context;
private static String libDir = "lib";
private static String shortLibName;
private static String fullLibName;
static public boolean loadLibrary(String libName, Context ctx)
{
context = ctx;
shortLibName = libName;
fullLibName = "lib" + libName + ".so";
try
{
Log.d("SharedLibraryLoader", "Trying to load library");
System.loadLibrary(shortLibName);
Log.d("SharedLibraryLoader", "Library was loaded from default location");
return true;
}
catch(UnsatisfiedLinkError e)
{
Log.d("SharedLibraryLoader","Lib wasn't found at default location. Trying to find in application private storage");
String path = null;
path = findInAppStorage(fullLibName);
if(path != null)
{
Log.d("SharedLibraryLoader","Lib was found in application private storage. Loading lib...");
System.load(path);
return true;
}
else
{
Log.d("SharedLibraryLoader","Lib was not found in application private storage. Trying to find in apk...");
path = findInApkAndCopyToAppStorage(fullLibName);
if(path != null)
{
Log.d("SharedLibraryLoader","Lib was found in apk and copied to application private storage. Loading lib...");
System.load(path);
return true;
}
else
{
Log.d("SharedLibraryLoader", "FAILED TO LOAD LIBRARY");
return false;
}
}
}
}
static private String findInAppStorage(String libName)
{
Log.d("SharedLibraryLoader","enter findInAppStorage()");
String basePath = context.getApplicationInfo().dataDir;
File dataDir = new File(basePath);
String[] listFiles;
String lib = null;
listFiles = dataDir.list();
for(int i=0; i < listFiles.length; i++)
{
lib = findInStorage(basePath + "/" +listFiles[i], libName);
if(lib != null)
{
return lib;
}
}
Log.d("SharedLibraryLoader", "Lib wasn't found.");
return null;
}
static private String findInStorage(String path, String nameOfLib)
{
File file = new File(path);
if(file.isDirectory())
{
Log.d("SharedLibraryLoader","Strorage__dir: " + path + "/");
String[] list = file.list();
String target = null;
for(int i = 0; i < list.length; i++)
{
target = findInStorage(path + "/" + list[i], nameOfLib);
if(target != null)
{
return target;
}
}
}
else
{
Log.d("SharedLibraryLoader","Strorage_file: " + path);
if(path.contains(nameOfLib))
{
Log.d("SharedLibraryLoader","Lib was found in: " + path);
return path;
}
}
return null;
}
static private String findInApkAndCopyToAppStorage(String libName)
{
Log.d("SharedLibraryLoader", "Enter findInApkAndCopyToStorage()");
// ---------------- ZIP - find path to .so inside .apk ------------------
String apkPath = context.getPackageResourcePath();
Log.d("SharedLibraryLoader", String.format("Path to Package resource is: %s", apkPath));
try
{
ZipFile zf = new ZipFile(apkPath);
Enumeration<ZipEntry> zipFiles = (Enumeration<ZipEntry>) zf.entries();
ZipEntry soZipEntry = null;
ZipEntry tempZipEntry;
String tmpString;
for ( ; zipFiles.hasMoreElements();)
{
tempZipEntry = zipFiles.nextElement();
tmpString = tempZipEntry.getName();
if(tmpString.contains(libName))
{
Log.d("SharedLibraryLoader", "Library " + fullLibName + " was found in: " + tmpString);
soZipEntry = tempZipEntry;
}
}
//----------now copy library---------------
Log.d("SharedLibraryLoader", "soZipEntry = " + soZipEntry.toString());
if(soZipEntry != null)
{
InputStream soInputStream = zf.getInputStream(soZipEntry);
File fileDir;
File soFile;
OutputStream outStream;
fileDir = context.getApplicationContext().getDir(libDir, Context.MODE_PRIVATE); // but "app_lib" was created!
String fullSoFilePath = fileDir.getAbsolutePath() + "/" + libName;
Log.d("SharedLibraryLoader", "New libpath is "+ fullSoFilePath);
soFile = new File(fullSoFilePath);
Log.d("SharedLibraryLoader", "Is file already exists? - " + soFile.exists());
outStream = new BufferedOutputStream(new FileOutputStream(soFile));
Log.d("SharedLibraryLoader", "Start copying library...");
byte[] byteArray = new byte[256];
int copiedBytes = 0;
while((copiedBytes = soInputStream.read(byteArray)) != -1)
{
outStream.write(byteArray, 0, copiedBytes);
}
Log.d("SharedLibraryLoader", "Finish copying library");
outStream.close();
soInputStream.close();
return fullSoFilePath;
}
else
{
Log.d("SharedLibraryLoader", "Library not Found in APK");
return null;
}
}
catch (IOException e)
{
e.printStackTrace();
return null;
}
}
}