Send image data to android app from App Engine -

in app engine backend have method gets image google cloud storage

@apimethod(         name = "getprofileimage",         path = "image",         httpmethod = apimethod.httpmethod.get) public image getprofileimage(@named("imagename")string imagename){     try{         httptransport httptransport = googlenethttptransport.newtrustedtransport();         googlecredential credential = googlecredential.getapplicationdefault();          storage.builder storagebuilder = new storage.builder(httptransport,new jacksonfactory(),credential);         storage storage = storagebuilder.build();          storage.objects.get getobject = storage.objects().get("mybucket", imagename);          bytearrayoutputstream out = new bytearrayoutputstream();         // if you're not in appengine, download whole thing in 1 request, if possible.         getobject.getmediahttpdownloader().setdirectdownloadenabled(false);         getobject.executemediaanddownloadto(out);          byte[] oldimagedata = out.tobytearray();         out.close();          imagesservice imagesservice = imagesservicefactory.getimagesservice();          return imagesservicefactory.makeimage(oldimagedata);     }catch(exception e){         logger.info("error getting image named "+imagename);     }     return null; } 

the issue having how image data when call in android app?

since cant return primitives app engine converted image call getimagedata() in app byte[].

however image object returned app not same 1 in app engine there no getimagedata().

how can image data android app?

if create object had byte[] variable in set byte[] variable string data , return object method work?

update

the image gets sent android app. (this code may or may not correct, have not debugged yet)

@workerthread     public string startresumablesession(){         try{             file file = new file(mfilepath);             long filesize = file.length();             file = null;             string surl = "https://www.googleapis.com/upload/storage/v1/b/lsimages/o?uploadtype=resumable&name="+mimgname;             url url = new url(surl);             httpurlconnection urlconnection = (httpurlconnection)url.openconnection();             urlconnection.setrequestproperty("authorization","");             urlconnection.setrequestproperty("x-upload-content-type","image/png");             urlconnection.setrequestproperty("x-upload-content-length",string.valueof(filesize));             urlconnection.setrequestmethod("post");              if(urlconnection.getresponsecode() == httpurlconnection.http_ok){                 return urlconnection.getheaderfield("location");             }         }catch(exception e){             e.printstacktrace();         }         return null;     }      private long sendnextchunk(string surl,file file,long skip){         int bytesread, bytesavailable, buffersize;         byte[] buffer;         int maxbuffersize = 524287;         long totalbytessent = 0;         try{             long filesize = file.length();             fileinputstream fileinputstream = new fileinputstream(file);             skip = fileinputstream.skip(skip);              bytesavailable = fileinputstream.available();             buffersize = math.min(bytesavailable, maxbuffersize);             totalbytessent = skip + buffersize;             buffer = new byte[buffersize];              bytesread = fileinputstream.read(buffer, 0, buffersize);             try {                 while (bytesread > 0) {                      try {                         url url = new url(surl);                         httpurlconnection urlconnection = (httpurlconnection)url.openconnection();                         urlconnection.setdoinput(true);                         urlconnection.setdooutput(true);                         urlconnection.setusecaches(false);                         urlconnection.setchunkedstreamingmode(524287);                         urlconnection.setrequestmethod("post");                         urlconnection.setrequestproperty("connection", "keep-alive");                         urlconnection.setrequestproperty("content-type","image/png");                         urlconnection.setrequestproperty("content-length",string.valueof(bytesread));                         urlconnection.setrequestproperty("content-range", "bytes "+string.valueof(skip)+"-"+string.valueof(totalbytessent)+"/"+string.valueof(filesize));                          dataoutputstream outputstream = new dataoutputstream(urlconnection.getoutputstream());                         outputstream.write(buffer, 0, buffersize);                          int code = urlconnection.getresponsecode();                          if(code == 308){                             string range = urlconnection.getheaderfield("range");                             return integer.parseint(range.split("-")[1]);                         }else if(code == httpurlconnection.http_created){                             return -1;                         }                          outputstream.flush();                         outputstream.close();                         outputstream = null;                     } catch (outofmemoryerror e) {                         e.printstacktrace(); //                        response = "outofmemoryerror"; //                        return response;                         return -1;                     }                     fileinputstream.close();                 }             } catch (exception e) {                 e.printstacktrace(); //                response = "error"; //                return response;                 return -1;             }         }catch(exception e){             e.printstacktrace();         }         return -1;     } 

edit 2:

apparently not clear people using endpoints in android app

what ended doing/finding out need call execute() on api call endpoints , returns real data passed api

example

the api call returns image

public image getprofileimage(@named("id") long id, @named("imagename")string imagename){         try{             profilerecord pr = get(id);             httptransport httptransport = googlenethttptransport.newtrustedtransport();             googlecredential credential = googlecredential.getapplicationdefault();              storage.builder storagebuilder = new storage.builder(httptransport,new jacksonfactory(),credential);             storage storage = storagebuilder.build();              storage.objects.get getobject = storage.objects().get("mybucket", imagename);          bytearrayoutputstream out = new bytearrayoutputstream();         // if you're not in appengine, download whole thing in 1 request, if possible.         getobject.getmediahttpdownloader().setdirectdownloadenabled(false);         getobject.executemediaanddownloadto(out);          byte[] oldimagedata = out.tobytearray();         out.close();         return imagesservicefactory.makeimage(oldimagedata);     }catch(exception e){         logger.info("error getting image named "+imagename);     }     return null; } 

then on client side call it

image = pr.profileimage(id,"name.jpg").execute(); byte[] data = i.decodeimagedata();