binder c++层 服务端回调客户端
sampleClient.cpp ------------------------------------------------------------------------------------------------ #include  #include  #include  #include  #include  #include  using  namespace  android; #ifdef  LOG_TAG #undef  LOG_TAG #endif #define  LOG_TAG  "sampleCallback" #define  SAMPLE_SERIVCE_DES  "sample.hello" #define  SAMPLE_CB_SERIVCE_DES  "android.os.SampleCallback" #define  SRV_CODE 1 #define  CB_CODE 1 class  SampeCallback :  public  BBinder {       public :      SampeCallback()      {           mydescriptor = String16(SAMPLE_CB_SERIVCE_DES);      }       virtual  ~SampeCallback() {                 }       virtual  const  String16& getInterfaceDescriptor()  const {             return  mydescriptor;      }       protected :             void  callbackFunction() {           LOGI(  "Client callback function called-----------cb"  );      }             virtual  status_t onTransact( uint32_t code,                 const  Parcel& data,Parcel* reply,uint32_t flags = 0){           LOGD(  "Client onTransact, code = %d" , code);                          switch  (code){             case  CB_CODE:               callbackFunction();                 break ;             default :                 return  BBinder::onTransact(code, data, reply, flags);           }             return  0;      }       private :      String16 mydescriptor; };
int  main() {      sp sm = defaultServiceManager();      sp ibinder = sm->getService(String16(SAMPLE_SERIVCE_DES));       if  (ibinder == NULL){           LOGW(  "Client can't find Service""  );             return  -1;      }      Parcel _data,_reply;      SampeCallback *callback =  new  SampeCallback();      _data.writeStrongBinder(sp(callback));       int  ret = ibinder->transact(SRV_CODE, _data, &_reply, 0);
//     ProcessState::self()->startThreadPool(); //     IPCThreadState::self()->joinThreadPool();      while(1);       return  0; }
sampleService.cpp ------------------------------------------------------------------------------------------------ #include  #include  #include  #include  #include  using  namespace  android; #ifdef  LOG_TAG #undef  LOG_TAG #endif #define  LOG_TAG  "sampleService" #define  SAMPLE_SERIVCE_DES  "sample.hello" #define  SAMPLE_CB_SERIVCE_DES  "android.os.SampleCallback" #define  SRV_CODE 1 #define  CB_CODE 1 class  SampleService:  public  BBinder { public :      SampleService() {           mydescriptor = String16(SAMPLE_SERIVCE_DES);      }             virtual  ~SampleService() {      }
      virtual  const  String16& getInterfaceDescriptor()  const  {             return  mydescriptor;      }       protected :             void  callFunction() {           LOGE(  "Service callFunction-----------" );      }             virtual  status_t onTransact(uint32_t code,  const  Parcel& data,               Parcel* reply, uint32_t flags = 0) {           LOGD(  "Service onTransact, code = %d"  , code);             switch  (code) {             case  SRV_CODE:               callback = data.readStrongBinder();                 if  (callback != NULL)               {                    Parcel _data, _reply;                    _data.writeInterfaceToken(String16(SAMPLE_CB_SERIVCE_DES));                      int  ret = callback->transact(CB_CODE, _data, &_reply, 0);               }               callFunction();                 break ;             default :                 return  BBinder::onTransact(code, data, reply, flags);           }             return  0;      } private :      String16 mydescriptor;      sp callback; };
int  main() {      sp < IServiceManager > sm = defaultServiceManager();      SampleService* samServ =  new  SampleService();      status_t ret = sm->addService(String16(SAMPLE_SERIVCE_DES), samServ);      LOGD( "Service addservice" );      ProcessState::self()->startThreadPool(); //     IPCThreadState::self()->joinThreadPool(  true );      while(1);       return  0; }
Android.mk ------------------------------------------------------------------------------------------------ LOCAL_PATH: =  $(call my-dir) include  $(CLEAR_VARS)
LOCAL_MODULE_TAGS : = eng
LOCAL_SRC_FILES: = \        sampleClient.cpp
LOCAL_C_INCLUDES + = \          $(LOCAL_PATH)  \
LOCAL_SHARED_LIBRARIES :  = \     libcutils \     libbinder \     libutils \     libhardware
LOCAL_CFLAGS : = -DRIL_SHLIB
LOCAL_MODULE: = sampleClient
include  $(BUILD_EXECUTABLE)
include  $(CLEAR_VARS)
LOCAL_MODULE_TAGS : = eng
LOCAL_SRC_FILES: = \            sampleService.cpp
LOCAL_C_INCLUDES + = \          $(LOCAL_PATH)  \
LOCAL_SHARED_LIBRARIES :  = \     libcutils \     libbinder \     libutils \     libhardware
LOCAL_CFLAGS : = -DRIL_SHLIB
LOCAL_MODULE: = sampleService
include  $(BUILD_EXECUTABLE)
------------------------------------------------ 1、新建文件夹binderSample 2、将以上三个文件放入ics-4.x\external\binderSample 3、编译，拷贝到开发环境中，chmod，然后各自运行  4、看log

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