ios - Objective-C - When I add a subview, my subview is going out of the screen at the bottom. Misunderstanding of frames? -

To practice purpose-C, and I try to do everything in the program.

I have a simple view that I add to my view of ViewController, but this subview is going out of the screen. When I set my frame, the status of X and Y is respected, but the rest do not ...

Here is a screenshot of my result:

As you can see ... the red subway is going out of the screen.

This is my loadView where I add that subview:

Home ViUi Controller M - loadview

  - (zero) loadview {self.view = [[UIView alloc] initWithFrame: [UIScreen main screen]. Bounce]; UIView * SubView = [[UIView alloc] initWithFrame: CGRactMake (15, 15, self v. U.fr. frame. Fourth-30, self.view.frame.size.height - 30)]; [Subview setbackgram color: [UIColor redColor]]; [Self.view addSubview: subview]; }  

For padding, I put 15 for the status x and y ... and for the frame, I did Remove the padding and calculate with the size of self.view ... As you see, it works well for width , but height

In my AppDelegate.h , I have set the navigation controller. Navigationbar.translucent = NO; , for that time I set the position for x and y , it starts well after the navigation bar is.

I do not understand this strange behavior for height ... if anyone has a good explanation for this, please, please.

Thank you

First, you should not rely on the value of the code < viewDidoad in self.view . It is set to a right value later, in viewWillAppear: . You can keep your code, if you change the size of your code automatically, when self.view is displayed. For that, set the autoresizingMask subview:

  subview.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;  

(If you use automatic layout, add the set of barriers.)

Also, instead of bound frame :

  UIView * subview = [[UIView alloc] initWithFrame: CGRKMakec (15, 15, self view.bound.ize.width - 30, self. View .bounds.size.height - 30)];  

It does not make any difference here, but it often happens, e.g. If you calculate the frames on the basis of the x and y the original frames.