Sharing my message with share kit to twitter

Question

i imported sharekit library in my project and i write following codes

SHKItem *item = [SHKItem text:@"sample message"];
SHKTwitter* twt = [[SHKTwitter alloc] init];
[twt setItem:item];
[twt share];

or

SHKItem *item = [SHKItem text:@"sample message"];
[SHKTwitter shareItem:item];

as you know, first authentication window appears. i want to share text when i enter my user name and password. but it redirect my redirect url and window don't close automatically