【替换】当前viewcontroller到另外一个viewcon

ByPointHigherViewController *vc = [[ByPointHigherViewController alloc] init];

NSMutableArray *ViewCtr = [NSMutableArray arrayWithArray:self.navigationController.viewControllers];

NSLog(@"navigation viewControllers is %@", ViewCtr);

int index = (int)[ViewCtr indexOfObject:self];

[ViewCtr removeObjectAtIndex:index];

[ViewCtr addObject:vc];

NSLog(@"the viewCtl is %@", ViewCtr);

[self.navigationController setViewControllers:ViewCtr animated:YES];