关于ANDROID NATIVE 的No implementation found for native问题

背景：搞android framework改制，加入一个系统服务。在framework/base/service里

写一个测试程序：

xxxxxx_android_hua_HuaRadio.cpp

#define LOG_TAG "Vehicle-JNI"#include "JNIHelp.h"#include "jni.h"#include <termios.h>#include <string.h>#include <fcntl.h>#include <utils/Log.h>#define MCU_DEV "/dev/uart-mcu"using namespace std;namespace android {static void xxx_android_hua_HuaRadio_nativeInit(JNIEnv * env, jobject obj){jclass cls = env->GetObjectClass(obj);jmethodID print= env->GetMethodID(cls,"print","()V");env->CallIntMethod(obj,print);}static void xxx_android_hua_HuaRadio_nativeRun(JNIEnv *, jobject){LOGE("send data:%d",2222222);}static JNINativeMethod HuaRadioMethods [] = { {"nativeInit","()Z",(void*)xxx_android_hua_HuaRadio_nativeInit},{"nativeRun","()Z",(void*)xxx_android_hua_HuaRadio_nativeRun},};int register_xxx_android_hua_HuaRadio(JNIEnv *env){int res = jniRegisterNativeMethods(env,"cn/com/xxx/android/hua/HuaRadio",HuaRadioMethods,NELEM(HuaRadioMethods));return 0;}}

HuaRadio.java

package cn.com.xxx.android.hua;import android.content.Context;import cn.com.xxx.android.IHuaRadio;public class HuaRadio  extends IHuaRadio.Stub{private Context context;public  HuaRadio(Context ctx){System.out.println("HuaRadio init() by hua");this.context=ctx;try{nativeInit();nativeRun();}catch(Exception e){System.out.plintln("hua "+e);}}public void init(){nativeRun();}public void print(){System.out.println("HuaService print method!!!");}public native  void nativeInit();  public native void nativeRun();  }

最后编译出现

No implementation found for native问题

为什么呢？

找了许久，发现register_xxx_android_hua_HuaRadio是要自己注册的

在onload.cpp 里加入

namespace android {int register_android_server_AlarmManagerService(JNIEnv* env);int register_android_server_BatteryService(JNIEnv* env);int register_android_server_InputManager(JNIEnv* env);int register_android_server_LightsService(JNIEnv* env);int register_android_server_PowerManagerService(JNIEnv* env);int register_android_server_UsbService(JNIEnv* env);int register_android_server_VibratorService(JNIEnv* env);int register_android_server_SystemServer(JNIEnv* env);int register_android_server_location_GpsLocationProvider(JNIEnv* env);//加入这个 就OK了int register_cs2c_android_hua_HuaRadio(JNIEnv* env);};

哎！！！

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