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android 新增native binder service 方式（三）

news 2025/9/13 9:22:19

书接上回，继续第三种方式，是手动生成 service binder 的方法,项目结构

1，编译aidl

aidl 文件保持不变，如何生成Bn和Bp 文件呢。

aidl -I ./libserviceaidl/aidl -h ./ -o ./ --lang=cpp libserviceaidl/aidl/com/test/IService.aidl

aidl -I ./libserviceaidl/aidl -h ./ -o ./ --lang=cpp libserviceaidl/aidl/com/test/IServiceCallback.aidl

　　-I　aidi 文件目录　　-h头文件生成路径　　-o cpp文件存放路径

2，Native service 差别不大

#define LOG_TAG "testservverfirst"
#include <log/log.h>#include <unistd.h>
#include <stdlib.h>
#include <utils/RefBase.h>
#include <utils/Log.h>
#include <binder/TextOutput.h>
#include <binder/IInterface.h>
#include <binder/IBinder.h>
#include <binder/ProcessState.h>
#include <binder/IServiceManager.h>
#include <binder/IPCThreadState.h>
#include <termios.h> 
#include <utils/String16.h>
#include "com/test/BnService.h"
#include "com/test/BnServiceCallback.h"using namespace std;
using namespace android;class TestService : public com::test::BnService 
{public:TestService(){}binder::Status nativecall(int i) {ALOGI("server nativecall function is running %d",i);if(mycallback != nullptr){mycallback->onEventString(4,String16("callbacksuccuess"));}return binder::Status();}binder::Status  callMcu(int32_t file,const vector<uint8_t>& type, int32_t* _aidl_return){*_aidl_return = 1;ALOGI("server callMcu function is running _aidl_return",*_aidl_return);return binder::Status();}binder::Status  call(int32_t type){ALOGI("server call function is running call %d",type);return binder::Status();}// 实现回调注册binder::Status registerCallback(const sp<com::test::IServiceCallback>& callback){mycallback  = callback;return binder::Status();}private:sp<::com::test::IServiceCallback> mycallback;};int main(int argc, char const *argv[])
{ALOGD("Server is runing");defaultServiceManager()->addService(String16("TestService"), new TestService());ProcessState::self()->startThreadPool();IPCThreadState::self()->joinThreadPool();return 0;
}

C++ 调用前面有介绍，最后补充下java 的调用方式。

3，Java 调用

try {Class<?> clazz = Class.forName("android.os.ServiceManager");Method method = clazz.getMethod("getService",String.class);IBinder binder = (IBinder) method.invoke(null,"TestService");if (binder != null){IService iservice = IService.Stub.asInterface(binder);// 千万不要忘记注册iservice.registerCallback(mycallback);iservice.call(1);}
} catch (ClassNotFoundException | NoSuchMethodException e) {e.printStackTrace();
} catch (IllegalAccessException e) {e.printStackTrace();
} catch (InvocationTargetException e) {e.printStackTrace();
} catch (RemoteException e) {e.printStackTrace();
}

或者系统里面

IService.Stub.asInterface(ServiceManager.getService("TestService"));

参考

[Android AIDL系列 1] 手动编译aidl文件，生成Java、C++[android]、C++[ndk]、Rust接口_aidl c++-CSDN博客

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