connecting twitter

I am developing an iPhone application in which i need to connect with twitter. can i do this using twiter api key? If possible how开发者_C百科 to get the twitter api key?

http://apiwiki.twitter.com

After you register your application at twitter.com/developer and get the token, its access level by default is read-only. If you want to send tweet as well, you need to change the access level to read-write and recreate your personal token.