Remove background of UIVIew - Remove The rectangle like shape

Question

I have a UIView in which i want to remove the whole background so it would take the shape of a paper. I tried setting the background to transparent from the UI and using the code but i always end up with a gray-like semi transparent background no matter what i do. Here is the current output i am getting :

How can i remove that grey background? i need it to display as a whole paper without that residue. Any Help? I tried the following :

//     self.view.backgroundColor = [UIColor clearColor];
//
//     [self.view setOpaque:YES];
//     
   //  self.view.backgroundColor = [UIColor clearColor];.
   //  self.view.layer.borderWidth = 0.0;
    // self.view.layer.masksToBounds = YES;
  //   self.view.backgroundColor=[[UIColor clearColor] colorWithAlphaComponent:.0];

And the current UI Configuration is :

How can i manage to remove it !? Any help!?

EDIT 1 This is the new output

Answer 1

Looks like your image it's inside a Modal View. If that is the case try the following:

Set the self.view.superview.backgroundColor to [UIColor clearColor]; inside the viewWillLayoutSubviews

Example

- (void)viewWillLayoutSubviews
{

    [super viewWillLayoutSubviews];
     self.view.superview.layer.masksToBounds = YES;
     self.view.superview.backgroundColor = [UIColor clearColor];
}