How to connect to a connecting C ++ service in java?

Question

I want to create a binding service in C ++ and be able to bind to this service from java. My question is: how? I emulated an implementation under / base / camera / tests / CameraServiceTest / CameraServiceTest.cpp. It compiles easily without any warnings, and I can run it. But how do I connect to it?

The service code is here:

/* Imitating frameworks/base/camera/tests/CameraServiceTest/
CameraServiceTest.cpp */

#include <binder/IInterface.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/ProcessState.h>
#include <binder/IBinder.h>

using namespace android;


class IPokeService : public IInterface {
        protected:
                enum {
                        POKE = IBinder::FIRST_CALL_TRANSACTION
                };

        public:
                DECLARE_META_INTERFACE(PokeService);
                virtual void poke() = 0;
};

class BnPokeService : public BnInterface<IPokeService> {
        virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags = 0);
};

class BpPokeService : public BpInterface<IPokeService> {
        public:
                BpPokeService(const sp<IBinder>& impl) :
BpInterface<IPokeService>(impl) {
                }

                virtual void poke() {
                        Parcel data, reply;
                        remote()->transact(POKE, data, &reply);
                }
};

IMPLEMENT_META_INTERFACE(PokeService, "PokeService");

status_t BnPokeService::onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags) {
        switch(code) {
                case POKE: {
                          poke();
                          return NO_ERROR;
                } break;
                default:
                        return BBinder::onTransact(code, data, reply, flags);
        }
}

class PokeService : public BnPokeService {
        virtual void poke() {
                printf("Poked\n");
        }
};

int main(int argc, char **argv)
{
        defaultServiceManager()->addService(String16("PokeService"), new
PokeService());
        ProcessState::self()->startThreadPool();

        android::ProcessState::self()->startThreadPool();
        LOGI("Poke service is now ready");
        IPCThreadState::self()->joinThreadPool();

        return 0;
}

And here is my Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := main.cpp

LOCAL_CFLAGS += -DPLATFORM_ANDROID

LOCAL_MODULE := poke

# for now, until I do a full rebuild.
LOCAL_PRELINK_MODULE := false

LOCAL_SHARED_LIBRARIES += liblog
LOCAL_SHARED_LIBRARIES += libutils libui libcutils
LOCAL_SHARED_LIBRARIES += libbinder

include $(BUILD_EXECUTABLE)

The service will not be displayed when I record in java:

Context context = getBaseContext();
ActivityManager am = (ActivityManager)
context.getSystemService(Activity.ACTIVITY_SERVICE);

List<RunningServiceInfo> serviceInfos = am.getRunningServices(50);

for (RunningServiceInfo service : serviceInfos) {
        Log.i("Service", "Process " + service.process + " with component " + service.service.getClassName());
}

This will only give me logcat:

I/Service (  715): Process system with component
com.android.internal.service.wallpaper.ImageWallpaper
I/Service (  715): Process com.android.phone with component
com.android.phone.BluetoothHeadsetService
I/Service (  715): Process com.android.inputmethod.latin with
component com.android.inputmethod.latin.LatinIME

Any help would be appreciated!

Regards, Samuel

Answer 1

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Answer 2

Service getSystemService(), . JNI

sm = defaultServiceManager();       
binder=sm->getService(String16("SERVICENAME"));
itf=interface_cast<IMul>(binder);

Yoou API, itf.