モーダルでの画面遷移方法

-(IBAction)showSettingView{
    //古い書き方みたい
    //SettingViewController * viewController =
    //    [[SettingViewController alloc]initWithNibName:@"SettingViewController"
    //                                           bundle:nil];
　　
    //こっちでOK
    SettingViewController * viewController = [SettingViewController new];
    [self presentViewController:viewController
                       animated:YES
                     completion:nil];
}