android - Return and access java object/class from jni -

i have java method returns instance of object/class 'readcommpacket'. call java method initiated ndk/jni side(c++ -> java-> return-> java object-> c++). how complete this, i'm struggling proper jni calls/signatures complete this. appreciated.

java object/class used return.

public class readcommpacket {      public byte[] rcpbtyeread;     public int rcpbytecount;      public readcommpacket(byte[] btyeread, int bytecount){         this.rcpbtyeread = btyeread;         this.rcpbytecount = bytecount;     } } 

java method called jni

public readcommpacket btmsgtondkcomm(){         if(bluetoothconnectedrunnable != null){             return bluetoothconnectedrunnable.readbt();//returns readcommpacket obj         }         return new readcommpacket(null, -1); } 

jni/ndk c/c++ code

void recvfrombluetooth(char * recvdbyte){  jnimethodinfo methodinfo; if (! getmethodinfo(&methodinfo, "btmsgtondkcomm", "v"))//what signature use? {     logd("cannot find method!");     return; }  //retreive btye[] , int readcommpacket here. jni calls?  } 

signature contains package name.

let’s suppose package name com.example

then signature in example be:

()lcom/example/readcommpacket 

p.s. if call method c++, make sure class name & method name not obfuscated pro guard (if use it)

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