ios - Controller A jumps to controller B, and screen B goes black?

Question

1. There are two VCs in storyBoard, each with navigation.

2. AVC jump method to BVC, button connection method

- (IBAction)clickBtnToBvc:(id)sender {
    BViewController *vc = [[BViewController alloc]init];
    [self.navigationController pushViewController:vc animated:YES];
}

3.BVC black screen, what is the reason?

Answer 1

Your B is created in the storyboard and bound to the control, so it needs to be loaded from the storyboard

BViewController * vc = [[UIStoryboard storyboardWithName:@"storyboard" bundle:nil] instantiateViewControllerWithIdentifier:@"IDENTITY"];
[self.navigationController pushViewController:vc animated:YES];

Answer 2

Try setting a background color for the view of BViewController

Answer 3

Delete the navigation of b