android - C++ 生成器 : Include JAR files

Question

我正在使用 C++ Builder 10.1 Berlin Enterprise 开发移动应用程序。该应用程序的目标是扫描条形码，我使用带有条形码扫描仪的 Android PDA。与扫描器相关的功能包含在一个 JAR 文件中。

如何在我的项目中使用这些功能？

编辑

我已经将 Jar 添加到我的项目中，但我不知道我必须包含什么才能使用扫描功能。

编辑 2

我用 Java2OP 创建了一个桥接文件。根据 Embarcadero 文档，我必须手动将其翻译成 C++，但我不了解 Delphi。这是代码:

unit Android.JNI.ATLib;

interface

uses
  Androidapi.JNIBridge,
  Androidapi.JNI.JavaTypes;

type
// ===== Forward declarations =====

  JATLib = interface;//com.atid.lib.ATLib

// ===== Interface declarations =====

  JATLibClass = interface(JObjectClass)
    ['{E264906A-B076-4960-9EAE-17DF2D2AEE74}']
    {class} function _GetINTERNAL_PATH: JString;
    {class} procedure _SetINTERNAL_PATH(Value: JString);
    {class} property INTERNAL_PATH: JString read _GetINTERNAL_PATH write _SetINTERNAL_PATH;
  end;

  [JavaSignature('com/atid/lib/ATLib')]
  JATLib = interface(JObject)
    ['{EFCFE579-FB94-432F-8DBB-851521F1EED7}']
  end;
  TJATLib = class(TJavaGenericImport<JATLibClass, JATLib>) end;

implementation

procedure RegisterTypes;
begin
  TRegTypes.RegisterType('Android.JNI.ATLib.JATLib', TypeInfo(Android.JNI.ATLib.JATLib));
end;

initialization
  RegisterTypes;
end.

你能给我一些建议将它翻译成 C++ 吗？

我也尝试包含 pas 文件，但是当我编译项目时出现此错误:

Compiler for "Delphi.Personality" and the platform "Android" is missing or unavailable.

编辑 3

多亏了这个 post，我成功地将我的桥接文件翻译成 C++ .我试图像这样在我的应用程序中使用该函数:

TJATScanLib* scan = new TJATScanLib();
_di_JATScanLib scanner = scan->JavaClass->init();

编译过程中没有问题，但在链接步骤中出现以下错误:

[ldandroid Erreur] C:\Users\Public\Documents\Embarcadero\Studio\18.0\CatalogRepository\AndroidNDK-9c_x86_GIB.Build.22858.6822\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\bin\arm -linux-androideabi-ld.exe: .\Android\Debug\Connexion.o: 在函数 TForm_Connexion::TForm_Connexion(System::Classes::TComponent*):C:\Users\dylan\Documents\Embarcadero\Studio\Projets\PDA_Android/Connexion.cpp:28:错误:

对“Androidapi::Jnibridge::TJavaGenericImport__2, System::DelphiInterface >::GetJavaClass()'”的 undefined reference

和“[ldandroid Erreur] C:\Users\Public\Documents\Embarcadero\Studio\18.0\CatalogRepository\AndroidNDK-9c_x86_GIB.Build.22858.6822\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\bin\arm-linux-androideabi-ld.exe: .\Android\Debug\Connexion.o: 在函数 TForm_Connexion::TForm_Connexion(System::Classes::TComponent*):C:\Users\dylan\Documents\Embarcadero\Studio\Projets\PDA_Android/Connexion.cpp:30:错误:

对“Android::Jni::Atscanlib::TJATScanLib 的 vtable”的 undefined reference ”

我的桥接文件:

#ifndef Android_JNI_ATScanLibH
#define Android_JNI_ATScanLibH

#pragma delphiheader begin
#pragma option push
#pragma option -w-      // All warnings off
#pragma option -Vx      // Zero-length empty class member
#pragma pack(push,8)

#include <Androidapi.JNIBridge.hpp>
#include <Androidapi.JNI.JavaTypes.hpp>

#include <System.hpp>
#include <SysInit.hpp>

namespace Android{
namespace Jni{
namespace Atscanlib{

__interface JAsyncTask;
typedef System::DelphiInterface<JAsyncTask> _di_JAsyncTask;

__interface JAsyncTaskClass;
typedef System::DelphiInterface<JAsyncTaskClass> _di_JAsyncTaskClass;

__interface JAsyncTask_Status;
typedef System::DelphiInterface<JAsyncTask_Status> _di_JAsyncTask_Status;

__interface JAsyncTask_StatusClass;
typedef System::DelphiInterface<JAsyncTask_StatusClass> _di_JAsyncTask_StatusClass;

__interface JATScanLib;
typedef System::DelphiInterface<JATScanLib> _di_JATScanLib;

__interface JATScanLibClass;
typedef System::DelphiInterface<JATScanLibClass> _di_JATScanLibClass;

__interface JATScanLib_OnResponseListener;
typedef System::DelphiInterface<JATScanLib_OnResponseListener> _di_JATScanLib_OnResponseListener;

__interface JATScanLib_OnResponseListenerClass;
typedef System::DelphiInterface<JATScanLib_OnResponseListenerClass> _di_JATScanLib_OnResponseListenerClass;

__interface JATScanLib_TagSequenceTask;
typedef System::DelphiInterface<JATScanLib_TagSequenceTask> _di_JATScanLib_TagSequenceTask;

__interface JATScanLib_TagSequenceTaskClass;
typedef System::DelphiInterface<JATScanLib_TagSequenceTask> _di_JATScanLib_TagSequenceTaskClass;

__interface JVoid;
typedef System::DelphiInterface<JVoid> _di_JVoid;

__interface JVoidClass;
typedef System::DelphiInterface<JVoid> _di_JVoidClass;

__interface  INTERFACE_UUID("{73C141D6-F8D7-4FE4-BFA3-3441B6367189}") JAsyncTaskClass  : public Androidapi::Jni::Javatypes::JObjectClass
{
public:
    virtual JExecutor _GetSERIAL_EXECUTOR() = 0;
    virtual JExecutor _GetTHREAD_POOL_EXECUTOR() = 0;
    HIDESBASE virtual _di_JAsyncTask __cdecl init() = 0;
    HIDESBASE virtual void __cdecl execute(JRunnable runnable) = 0;

    __property JExecutor SERIAL_EXECUTOR = {read = _GetSERIAL_EXECUTOR};
    __property JExecutor THREAD_POOL_EXECUTOR = {read = _GetTHREAD_POOL_EXECUTOR};

};

__interface  INTERFACE_UUID("{73C141D6-F8D7-4FE4-BFA3-3441B6367189}") JAsyncTask  : public Androidapi::Jni::Javatypes::JObject
{
public:
    virtual bool __cdecl cancel(bool mayInterruptIfRunning) = 0;
    HIDESBASE virtual JObject __cdecl get() = 0;
    HIDESBASE virtual JObject __cdecl get(__int64 timeout, JTimeUnit unit_) = 0;
    virtual _di_JAsyncTask_Status __cdecl getStatus() = 0;
    virtual bool __cdecl isCancelled() = 0;

};
#pragma pack(push,4)

class PASCALIMPLEMENTATION TJAsyncTask : public Androidapi::Jnibridge::TJavaGenericImport__2<_di_JAsyncTaskClass, _di_JAsyncTask>{
    typedef Androidapi::Jnibridge::TJavaGenericImport__2<_di_JAsyncTaskClass, _di_JAsyncTask> inherited;
    public:
        inline __fastcall TJAsyncTask() : Androidapi::Jnibridge::TJavaGenericImport__2<_di_JAsyncTaskClass, _di_JAsyncTask> (){}
        inline __fastcall virtual ~TJAsyncTask(void){}
};

#pragma pack(pop)


__interface  INTERFACE_UUID("{16452E24-44D5-4E84-990E-3C1916FB372B}") JAsyncTask_StatusClass  : public Androidapi::Jni::Javatypes::JEnumClass
{
public:
    virtual _di_JAsyncTask_Status _GetFINISHED() = 0;
    virtual _di_JAsyncTask_Status _GetPENDING() = 0;
    virtual _di_JAsyncTask_Status _GetRUNNING() = 0;
    virtual _di_JAsyncTask_Status __cdecl valueOf(JString name) = 0;
    virtual TJavaObjectArray__1<_di_JAsyncTask_Status> __cdecl values() = 0;


    __property _di_JAsyncTask_Status FINISHED = {read = _GetFINISHED};
    __property _di_JAsyncTask_Status PENDING = {read = _GetPENDING};
    __property _di_JAsyncTask_Status RUNNING = {read = _GetRUNNING};

};

__interface  INTERFACE_UUID("{96B0BCE7-1312-49B9-9F33-43541680B0E7}") JAsyncTask_Status  : public Androidapi::Jni::Javatypes::JEnum
{
};
#pragma pack(push,4)

class PASCALIMPLEMENTATION TJAsyncTask_Status : public Androidapi::Jnibridge::TJavaGenericImport__2<_di_JAsyncTask_StatusClass, _di_JAsyncTask_Status>{
    typedef Androidapi::Jnibridge::TJavaGenericImport__2<_di_JAsyncTask_StatusClass, _di_JAsyncTask_Status> inherited;
    public:
        inline __fastcall TJAsyncTask_Status() : Androidapi::Jnibridge::TJavaGenericImport__2<_di_JAsyncTask_StatusClass, _di_JAsyncTask_Status> (){}
        inline __fastcall virtual ~TJAsyncTask_Status(void){}
};

#pragma pack(pop)

__interface  INTERFACE_UUID("{9A209D1D-07C6-4309-88AD-8A2EF359CF34}") JATScanLibClass  : public Androidapi::Jni::Javatypes::JObjectClass
{
public:
    virtual int _GetREAD_ENCODING_ERROR() = 0;
    virtual int _GetREAD_ERROR() = 0;
    virtual int _GetREAD_OK() = 0;
    virtual int _GetREAD_TIMEOUT() = 0;
    HIDESBASE virtual _di_JATScanLib __cdecl init() = 0;

    __property int READ_ENCODING_ERROR = {read = _GetREAD_ENCODING_ERROR};
    __property int READ_ERROR = {read = _GetREAD_ERROR};
    __property int READ_OK = {read = _GetREAD_OK};
    __property int READ_TIMEOUT = {read = _GetREAD_TIMEOUT};

};

__interface  INTERFACE_UUID("{74B37E9E-F88A-4EB0-AEDF-538A472223A0}") JATScanLib  : public Androidapi::Jni::Javatypes::JObject
{
public:
    virtual int __cdecl Read(TJavaArray__1<Byte> P1) = 0;
    virtual JString __cdecl getReadResults() = 0;
    virtual void __cdecl init() = 0;
    virtual void __cdecl setEncoding(JString P1) = 0;
    virtual void __cdecl setOnResponseListener(_di_JATScanLib_OnResponseListener P1) = 0;
    virtual void __cdecl start() = 0;
    virtual void __cdecl stop() = 0;
};
#pragma pack(push,4)

class PASCALIMPLEMENTATION TJATScanLib : public Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLibClass, _di_JATScanLib>{
    typedef Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLibClass, _di_JATScanLib> inherited;
    public:
        inline __fastcall TJATScanLib() : Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLibClass, _di_JATScanLib> (){}
        inline __fastcall virtual ~TJATScanLib(void){}
};

#pragma pack(pop)

__interface  INTERFACE_UUID("{654B87BA-B4EE-4102-85E9-9FDFF3C82BAA}") JATScanLib_OnResponseListenerClass  : public Androidapi::Jnibridge::IJavaClass
{
};

__interface  INTERFACE_UUID("{35AC182B-7684-47EA-9BA8-07B504F85943}") JATScanLib_OnResponseListener  : public Androidapi::Jnibridge::IJavaInstance
{
public:
    virtual void __cdecl onResponse(int P1) = 0;
};
#pragma pack(push,4)

class PASCALIMPLEMENTATION TJATScanLib_OnResponseListener : public Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLib_OnResponseListenerClass, _di_JATScanLib_OnResponseListener>{
    typedef Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLib_OnResponseListenerClass, _di_JATScanLib_OnResponseListener> inherited;
    public:
        inline __fastcall TJATScanLib_OnResponseListener() : Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLib_OnResponseListenerClass, _di_JATScanLib_OnResponseListener> (){}
        inline __fastcall virtual ~TJATScanLib_OnResponseListener(void){}
};

#pragma pack(pop)

__interface  INTERFACE_UUID("{1CF84DF6-6115-4FB5-9967-B55E74A3155C}") JATScanLib_TagSequenceTaskClass  : public _di_JAsyncTaskClass
{
};

__interface  INTERFACE_UUID("{B83D8A9F-C1C4-4023-B1D8-3D9ABFB1FD2C}") JATScanLib_TagSequenceTask  : public _di_JAsyncTask
{
};
#pragma pack(push,4)

class PASCALIMPLEMENTATION TJATScanLib_TagSequenceTask : public Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLib_TagSequenceTaskClass, _di_JATScanLib_TagSequenceTask>{
    typedef Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLib_TagSequenceTaskClass, _di_JATScanLib_TagSequenceTask> inherited;
    public:
        inline __fastcall TJATScanLib_TagSequenceTask() : Androidapi::Jnibridge::TJavaGenericImport__2<_di_JATScanLib_TagSequenceTaskClass, _di_JATScanLib_TagSequenceTask> (){}
        inline __fastcall virtual ~TJATScanLib_TagSequenceTask(void){}
};

#pragma pack(pop)

__interface  INTERFACE_UUID("{E5AB6B2B-2580-469B-BBF6-C226984DFEBE}") JVoidClass : public Androidapi::Jni::Javatypes::JObjectClass
{
public:
    virtual Jlang_Class _GetTYPE() = 0;
    __property Jlang_Class TYPE = {read = _GetTYPE};

};

__interface  INTERFACE_UUID("{013CC63A-938C-46BE-ACAC-BA854F2F6AC8}") JVoid  : public Androidapi::Jni::Javatypes::JObject
{
};
#pragma pack(push,4)

class PASCALIMPLEMENTATION TJVoid : public Androidapi::Jnibridge::TJavaGenericImport__2<_di_JVoidClass, _di_JVoid>{
    typedef Androidapi::Jnibridge::TJavaGenericImport__2<_di_JVoidClass, _di_JVoid> inherited;
    public:
        inline __fastcall TJVoid() : Androidapi::Jnibridge::TJavaGenericImport__2<_di_JVoidClass, _di_JVoid> (){}
        inline __fastcall virtual ~TJVoid(void){}
};
#pragma pack(pop)
}
}
}
#if !defined(DELPHIHEADER_NO_IMPLICIT_NAMESPACE_USE) && !defined(NO_USING_NAMESPACE_ANDROID_JNI_ATLIB)
    using namespace Android::Jni::Atscanlib;
#endif

#if !defined(DELPHIHEADER_NO_IMPLICIT_NAMESPACE_USE) && !defined(NO_USING_NAMESPACE_ANDROID_JNI)
    using namespace Android::Jni;
#endif

#if !defined(DELPHIHEADER_NO_IMPLICIT_NAMESPACE_USE) && !defined(NO_USING_NAMESPACE_ANDROID)
    using namespace Android;
#endif

#pragma pack(pop)
#pragma option pop

#pragma delphiheader end.
#endif

Answer 1

这个主题包含在 Embarcadero 的文档中:

Using a Custom Set of Java Libraries In Your RAD Studio Android Apps

RAD Studio allows you to use your own or third-party Java libraries in RAD Studio applications.

To use a custom set of libraries in your RAD Studio Android applications:

1. Ensure that your Java libraries meet the RAD Studio requirements for Java libraries.

2. Create a native bridge file that your Delphi or C++ applications can use to access the APIs of your Java libraries.

3. Add your Java libraries to your application.

您的项目中缺少的是第 2 步。您可以使用 Embarcadero 的 Java2OP生成该桥接文件的工具。