Android - Facebook API : post image -


i'm building app allows facebook users create new events. noticed can't create event , add image in unique graph api call. make call post image: 

 bitmap bitmap = bitmapfactory.decoderesource(getresources(), r.drawable.my_image);  bundle params = new bundle();  params.putparcelable("source", bitmap);   request postimagerequest = new request(session.getactivesession(), eventid + "/picture", params, httpmethod.post, new callback() {            @override            public void oncompleted(response response) {                 log.e("", response.tostring());                 finish();            }  });  postimagerequest.executeasync();

but error response fb servers:

httpstatus: 400, errorcode: 324, errortype: oauthexception, errormessage: (#324) missing or invalid image file}, isfromcache:false

request photoimagerequest= request.newuploadphotorequest(session.getactivesession(), bitmap, new request.callback(){  @override public void oncompleted(response response) { log.e("", response.tostring()); finish();  }});

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