ios day 15-2

facebook.m

- (IBAction)tappedSendFacebook:(id)sender {
    SLComposeViewController *socialComposerSheet;
    if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
        socialComposerSheet = [[SLComposeViewController alloc] init];
        socialComposerSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
        [socialComposerSheet setInitialText:[NSString stringWithFormat:@"My Tweet!",socialComposerSheet.serviceType]];
        [self presentViewController:socialComposerSheet animated:YES completion:nil];
    }
    [socialComposerSheet setCompletionHandler:^(SLComposeViewControllerResult result) {
        NSString *output;
        switch (result) {
            case SLComposeViewControllerResultDone:
                //post worked
                break;
            case SLComposeViewControllerResultCancelled:
                //cancelled
                break;
        }
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Facebook" message:output delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
        [alert show];
    }];
}