I want the presentview and its contents to be on scroll view when orientation occurs to landscape mode - objective-c

Question

when i shift from portrait mode to landscape mode the view should expand widely but the length should be the same and in scrollview so that when i scroll the fullcontents should be displayed:
if (([[UIDevice currentDevice]orientation] == UIInterfaceOrientationLandscapeLeft) ||
([[UIDevice currentDevice]orientation] == UIInterfaceOrientationLandscapeRight))
{
UIScrollView *scrollView=[[UIScrollView alloc] init];
UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 480, 480)];
view1 = self.view;
[scrollView addSubview:view1];
scrollView.frame = CGRectMake(0, 0, 480, 480);
scrollView.contentSize = CGSizeMake(480, 480);
scrollView.delegate = self;
scrollView.alwaysBounceVertical = YES;
[self.view addSubview:scrollView];
}

Answer 1

if(([[UIDevice currentDevice]orientation] == UIInterfaceOrientationLandscapeLeft) || ([[UIDevice currentDevice]orientation] == UIInterfaceOrientationLandscapeRight)) {
UIScrollView * scrollView=[[UIScrollView alloc] init]; UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 480, 480)];
view1 = self.view; [scrollView addSubview:view1]; scrollView.frame = CGRectMake(0, 0, 480, 480);
scrollView.contentSize = CGSizeMake(480, 480); scrollView.delegate = self;
scrollView.alwaysBounceVertical = YES; [self.view addSubview:scrollView];
}

Answer 2

Please update your question with more information for example - what is and is not working? Don't add updates as comments, edit your question.
In your existing code, at least this is wrong/confused:
UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 480, 480)];
view1 = self.view;
you are assigning a pointer to a new view in the first line, then reassigning it to your existing self.view in the second line. Then here:
[self.view addSubview:scrollView];
you are adding a scrollview containing a content view to that same content view. That's not going to work.
As a cleaner solution, why don't you set up your scrollview/subview combo for both orientations. Then when you rotate, you just need to alter your scrollview's contentsize.
For the normal upright orientation:
self.scrollview.contentSize = self.scrollview.bounds.size;
For landscape:
self.scrollview.contentSize =
CGSizeMake(self.scrollView.bounds.size.width, self.contentView.bounds.size.height
(assuming your content is in a view called contentView contained inside your scrollView)
You should be able to get the contentOffset to work correctly for both orientations in the storyboard, but if not your can set it in code for each orientation.