YiJiAdviseViewController *yiji= [self.storyboard instantiateViewControllerWithIdentifier:@“yiJiAdviseViewController”];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:yiji]; //增加导航栏
//nav.modalPresentationStyle = UIModalPresentationFormSheet;
nav.modalPresentationStyle = 0; //全屏
[self presentViewController:nav animated:YES completion:NULL];