ios - A控制器跳轉B控制器，B黑屏？

Question

1.storyBoard中有2個VC，分別套了導航。

#2.AVC跳轉BVC的方法，button連線的方法

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

3.BVC黑屏，請問是什麼原因？

#

Answer 1

你的B是在storyboard中建立的並綁定控件，所以要從storyboard載入

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

Answer 2

嘗試一下為BViewController的view設定一個背景顏色

Answer 3

把b的導航刪除