UISegmentedControl

UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:@[@"normal", @"custom"]];    [segment setSelectedSegmentIndex:0];    [segment addTarget:self action:@selector(changeMapAction:) forControlEvents:UIControlEventValueChanged];    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:segment];