"The topic of .so files has come up many times, and I need to ask about it again. I’m not very familiar with them, so I have a question: how do I add a .so library in an Android build?
No matter how I try, I can’t access the methods from the .so file.
Also, wherever I add it to the .apk, ‘_test.so’ is appended to the file name.
unpacked aar
cmake from sdl example
CMakeLists.txt (6.3 KB)
A shared object file is loaded and used at runtime by the main application. You usually include .so files in your final application bundle from a Gradle dependency with an .aar file containing .so files:
When you bundle for Android and you have a dependency which includes a /jni folder with .so files we get them from the build server and include them in your .aab/.apk file. In .aab files the .so files are stored in /base/lib/PLATFORM/foobar.so:
You should be able to manually include .so files like you did by putting them in your extension in /res/android …
Although this looks a bit odd:
Shouldn’t it be:
/res/arm64-android/lib/arm64-v8a/libgadsme.so
yes! now it builds, and i can operate with code from Java side, but if i try to call same methods from C++, i got error
2024-08-27 12:37:12.762 7166-7204 om.example.todo com.example.todo A java_vm_ext.cc:591] JNI DETECTED ERROR IN APPLICATION: JNI NewGlobalRef called with pending exception java.lang.ClassNotFoundException: Didn't find class "gadsme.support.resource.Resource" on path: DexPathList[[directory "."],nativeLibraryDirectories=[/system/lib64, /system_ext/lib64, /system/lib64, /system_ext/lib64]]
java_vm_ext.cc:591] at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:259)
java_vm_ext.cc:591] at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
java_vm_ext.cc:591] at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
java_vm_ext.cc:591]
java_vm_ext.cc:591] in call to NewGlobalRef
but class gadsme.support.resource.Resource is already in dex file
also i don’t understand why i got two files _test.so and .so of lib
Me neither, that looks very strange
Can you share a bit of code how you set this up?
My cpp file:
#define EXTENSION_NAME DefGadsmeSDK
#define LIB_NAME "DefGadsmeSDK"
#define MODULE_NAME "def_gadsme_sdk"
#define DLIB_LOG_DOMAIN LIB_NAME
#include <dmsdk/sdk.h>
#include "def_gadsme_sdk.h"
#include <cmath>
#include <iostream>
// Import the SDK header on other platforms
#include "GadsmeSDK.h"
using namespace gadsme;
namespace dmGadsmeSDK {
static std::string str = "my_key";
static void set_sandbox(bool value) {
// Gadsme_setForceSandbox(true);
}
static const luaL_reg Module_methods[] =
{
{0, 0}
};
static void LuaInit(lua_State* L)
{
int top = lua_gettop(L);
luaL_register(L, MODULE_NAME, Module_methods);
lua_pop(L, 1);
assert(top == lua_gettop(L));
}
dmExtension::Result InitializeDefGadsmeSDK(dmExtension::Params* params)
{
LuaInit(params->m_L);
dmLogInfo("Registered extension DefGadsmeSDK");
Initialize_Ext();
////Delayed CRASH after calling Gadsme_setGameId
Gadsme_setGameId(Gadsme_str(str));
set_sandbox(true);
// Gadsme_init();
return dmExtension::RESULT_OK;
}
DM_DECLARE_EXTENSION(EXTENSION_NAME, LIB_NAME, 0, 0, InitializeDefGadsmeSDK, 0, 0, 0)
} //namespace
Part of GadsmeSDK.h
#define GADSME_SDK_H
#include <string>
#include <memory>
#include <functional>
#include <vector>
#include <map>
#include <utility>
#if defined(__ANDROID__)
#define GADSME_ANDROID 1
#elif defined(_WIN32)
#define GADSME_WINDOWS 1
#elif defined(__APPLE__)
#include <TargetConditionals.h>
#if TARGET_OS_IPHONE
#define GADSME_IOS 1
#else
#define GADSME_MAC 1
#endif
#endif
#if GADSME_ANDROID
#include <jni.h>
#endif
#if defined _WIN32 || defined __CYGWIN__
#ifdef BUILDING_GADSME
#ifdef __GNUC__
#define GADSME_PUBLIC __attribute__ ((dllexport))
#else
#define GADSME_PUBLIC __declspec(dllexport)
#endif
#else
#ifdef __GNUC__
#define GADSME_PUBLIC __attribute__ ((dllimport))
#else
#define GADSME_PUBLIC __declspec(dllimport)
#endif
#endif
#define GADSME_HIDDEN
#else
#if __GNUC__ >= 4
#define GADSME_PUBLIC __attribute__ ((visibility ("default")))
#define GADSME_HIDDEN __attribute__ ((visibility ("hidden")))
#else
#define GADSME_PUBLIC
#define GADSME_HIDDEN
#endif
#endif
/**
* Gadsme SDK namespace.
*
* The SDK can be initialized from any thread, but any following call
* should be done from this same thread. Calling from another thread will
* cause a crash, unless using a method which is explicitly documented as
* being thread safe, and thus can be called from any thread without issues.
*/
namespace gadsme {
/// Type aliases
#if defined(_MSC_VER) && _MSC_VER < 1900
typedef std::shared_ptr< std::vector<unsigned char> > Gadsme_Bytes;
typedef std::shared_ptr<std::string> Gadsme_String;
typedef std::shared_ptr< std::map< std::string, gadsme::Gadsme_String> > Gadsme_StringStringMap;
typedef std::shared_ptr< std::vector<int> > Gadsme_IntArray;
#else
using Gadsme_Bytes = std::shared_ptr< std::vector<unsigned char> >;
using Gadsme_String = std::shared_ptr<std::string>;
using Gadsme_StringStringMap = std::shared_ptr< std::map< std::string, gadsme::Gadsme_String> >;
using Gadsme_IntArray = std::shared_ptr< std::vector<int> >;
#endif
...............................................
GADSME_PUBLIC Gadsme_String Gadsme_str(std::string str);
...............................................
GADSME_PUBLIC void Gadsme_setGameId(Gadsme_String gameId);
...............................................
}
ext.manifest
name: "DefGadsmeSDK"
platforms:
armv7-android:
context:
defines: ['__ANDROID__']
arm64-android:
context:
defines: ['__ANDROID__']I’m pretty sure this is unnecessary.
So you are able to call the function in the library? But it crashes after a while? I’m curious to learn what the Android device log says. Have you looked for clues as to why it crashes?
got this error:
textava_vm_ext.cc:591] JNI DETECTED ERROR IN APPLICATION: JNI NewGlobalRef called with pending exception java.lang.ClassNotFoundException: Didn't find class "gadsme.support.resource.Resource" on path: DexPathList[[directory "."],nativeLibraryDirectories=[/system/lib64, /system_ext/lib64, /system/lib64, /system_ext/lib64]]
java_vm_ext.cc:591] at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:259)
java_vm_ext.cc:591] at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
java_vm_ext.cc:591] at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
java_vm_ext.cc:591]
java_vm_ext.cc:591] in call to NewGlobalRef