UIView Fixed Height is different in iphone 6 plus, iphone 8 plus

Code Block 
- (void)viewDidLayoutSubviews{
  [super viewDidLayoutSubviews];
  UIButton* button =[[UIButton alloc] initWithFrame:CGRectMake(0, 200, [UIScreen mainScreen].bounds.size.width, 300)];
  [button setBackgroundColor:[UIColor orangeColor]];
  [button addTarget:self action:@selector(clicked:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
}