Add buttons to right bar button item

gistfile1.m

UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 44.0f)];

self.countLabel = [[UILabel alloc] init];
self.countLabel.text = [self characterCountRemaining:0];
[self.countLabel sizeToFit];
UIBarButtonItem *countLabelItem = [[UIBarButtonItem alloc] initWithCustomView:self.countLabel];

UIBarButtonItem *tweetButtonItem = [[UIBarButtonItem  alloc] initWithTitle:@"Tweet" style:UIBarButtonItemStylePlain target:self action:@selector(onTweet)];

[toolBar setItems:@[countLabelItem, tweetButtonItem] animated:NO];

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:toolBar];