Display clearColor UIViewController over UIViewController

I found the easiest way to get it to work on iOS7 and iOS8 is to add set the presentationStyle to UIModalPresentationOverCurrentContext on the modallyPresentedVC (ViewController which you want to present modally) because of iOS8:

[modallyPresentedVC setModalPresentationStyle:UIModalPresentationOverCurrentContext];
[modallyPresentedVC.navigationController setModalPresentationStyle:UIModalPresentationOverCurrentContext];

and UIModalPresentationCurrentContext on presentingVC (the controller which presents the modallyPresented) because of iOS7:

[presentingVC setModalPresentationStyle:UIModalPresentationCurrentContext];
[presentingVC.navigationController setModalPresentationStyle:UIModalPresentationCurrentContext];

Because things are handled differently on iOS7 and iOS8. Of course you don't have to set the navigationController properties if you are not using one. Hope that helps.

Just use "self.modalPresentationStyle = UIModalPresentationCurrentContext;", in presenting view

Will work fine :)

Swift2 version :

let vc = self.storyboard!.instantiateViewControllerWithIdentifier("YourViewController") as! YourViewController
vc.view.backgroundColor = UIColor.clearColor()
vc.modalPresentationStyle = UIModalPresentationStyle.OverFullScreen // orOverCurrentContext to place under navigation
self.presentViewController(vc, animated: true, completion: nil)

**iOS8+**

In iOS8+ you can now use the new modalPresentationStyle UIModalPresentationOverCurrentContext to present a view controller with a transparent background:

MyModalViewController *modalViewController = [[MyModalViewController alloc] init];
modalViewController.modalPresentationStyle = UIModalPresentationOverCurrentContext;
[self presentViewController:modalViewController animated:YES completion:nil];

So for purely visual thinkers and storyboard fans, you can do:

**1. Presenting View Controller**

![Define context][1]




**2. Presented View Controller**

![Presentation: Over Current Context][2]


[1]:

[2]:

You also can 're-add' the window to the view. <br>

OneViewController *vc = [[OneViewController alloc] init];
if ([self respondsToSelector:@selector(presentViewController:animated:completion:)]) {
[self presentViewController:vc animated:YES completion:nil];
} else {
[self presentModalViewController:vc animated:YES];
}

[[[UIApplication sharedApplication] keyWindow] insertSubview:self.view atIndex:0];

And in this way, presenting can be animated.

Swift 3 & iOS10 solution :

//create view controller
let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "RoadTripPreviewViewController")
//remove black screen in background
vc.modalPresentationStyle = .overCurrentContext
//add clear color background
vc.view.backgroundColor = UIColor.clear
//present modal
self.present(vc, animated: true, completion: nil)