android binder 简单实例

#include <binder/Parcel.h> #include "IExample.h" using namespace android; namespace example { enum { GET_INDEX, }; class BpExample: public BpInterface<IExample> { public: BpExample(const sp<IBinder>& impl) : BpInterface<IExample>(impl) { } virtual int getIndex() { Parcel data, reply; data.writeInterfaceToken(IExample::getInterfaceDescriptor()); remote()->transact(GET_INDEX, data, &reply); return reply.readInt32(); } }; IMPLEMENT_META_INTERFACE(Example, "android.Example"); //----------------------------------------------------------------------- status_t BnExample::onTransact( uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { switch(code) { case GET_INDEX: { CHECK_INTERFACE(IExample, data, reply); reply->writeInt32(this->getIndex()); return NO_ERROR; } break; default: return BBinder::onTransact(code, data, reply, flags); } } //------------------------------------------------------------------------ };