Facebook android app error : Invalid key hash -

i have imported facebook sdk android project, first time logged in facebook android application worked, second time got error :

invalid key hash. key hash "..." not match stored key hashes. configure app key hashes @ http://developers.facebook.com/apps/..

i tried enter key provided in error didn't work.

edit: have used cmd command generates key , asks password "android"

as understand you've got key hash, still i'll put here code getting in console.

packageinfo info; try {     info = getpackagemanager().getpackageinfo("com.your.project.package", packagemanager.get_signatures);     (signature signature : info.signatures) {         messagedigest md;         md = messagedigest.getinstance("sha");         md.update(signature.tobytearray());         string = new string(base64.encode(md.digest(), 0));         //string = new string(base64.encodebytes(md.digest()));         log.e("hash key", something);     } } catch (packagemanager.namenotfoundexception e1) {     log.e("name not found", e1.tostring()); } catch (nosuchalgorithmexception e) {     log.e("no such algorithm", e.tostring()); } catch (exception e) {     log.e("exception", e.tostring()); } 

where "com.your.project.package" package of project =)

next thing, dont delete previous key hash, don't conflict think. example have 2 keyhashes in facebook app.

and latest thing, , think problem. go status&review of app @ developers.facebook. , switch application public.