如何定制自己的native service： example (C++)

IMyService.h:

#ifndef MY_SERVICE_DEMO #define MY_SERVICE_DEMO #include <stdio.h> #include <binder/IInterface.h> #include <binder/Parcel.h> #include <binder/IBinder.h> #include <binder/ProcessState.h> #include <binder/IPCThreadState.h> #include <binder/IServiceManager.h> using namespace android; namespace android { class IMyService: public IInterface { public: DECLARE_META_INTERFACE(MyService); virtual void sayHello() = 0; }; enum { HELLO = IBinder::FIRST_CALL_TRANSACTION, }; class BpMyService: public BpInterface<IMyService> { public: BpMyService(const sp<IBinder>& impl); virtual void sayHello(); }; class BnMyService: public BnInterface<IMyService> { public: virtual status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags = 0); virtual void sayHello(); }; } #endif

IMyService.cpp:

#include "IMyService.h" namespace android { IMPLEMENT_META_INTERFACE(MyService, "android.demo.IMyService"); // client BpMyService::BpMyService(const sp<IBinder>& impl):BpInterface<IMyService>(impl) { } // to implement client's sayhello method void BpMyService::sayHello() { printf("BpMyService::SayHello\n"); Parcel data, reply; data.writeInterfaceToken(IMyService::getInterfaceDescriptor()); remote()->transact(HELLO, data, &reply); printf("get num from BnService: %d\n", reply.readInt32()); } //Server side: receive remote msg, and handle onTransact() status_t BnMyService::onTransact(uint_t code, const Parcel& data, Parcel* reply, uint32_t flags) { switch(code) { case HELLO: printf("BnMyService:: got the client hello\n"); CHECK_INTERFACE(IMyService, data, reply); sayHello(); reply->writeInt32(2016); return NO_ERROR; break; default: break; } return NO_ERROR; } // Server side: sayHello() void BnMyService::sayHello() { printf("BnMyService::sayHello\n"); }; }

ServerDemo.cpp:

#include "IMyService.h" int main() { sp <IServiceManager> sm = defaultServiceManager(); sm->addService(String16("service.myservice"), new BnMyService()); android::ProcessState::self()->startThreadPool(); IPCThreadState::self()->joinThreadPool(); return 0; }

将名为”service.myservice”的BnMyService服务添加到ServiceManager，并启动服务

ClientDemo.cpp

#include "IMyService.h" int main () { sp <IServiceManager> sm = defaultServiceManager(); sp <IBinder> binder = sm->getService(String16("service.myservice")); sp <IMyService> cs = interface_cast <IMyService> (binder); cs->sayHello(); // Remote call return 0; }

编译好后，adb push到手机目录中/system/bin

之后开2个终端：

root@:/ # /system/bin/ServerDemo BnMyService:: got the client hello BnMyService::sayHello

root@:/ # /system/bin/ClientDemo BpMyService::SayHello get num from BnService: 2016

https://www.processon.com/view/link/583feda2e4b08e313590a25d