Background view not scaling correctly in Landscape mode - ios

Question

that for some reason, the background image on each page is about 3/4 of the way across and stretched at the top, almost like it's portrait instead of landscape, this was fine before iOS 10 / XCode 8
I am calling a lot of values from the Util file, here;
static float getDevicePosX( float PadPosX )
{
AppDelegate* appDelegate = [[UIApplication sharedApplication] delegate];
CGRect f = appDelegate.window.frame;
float width = f.size.width > f.size.height ? f.size.width : f.size.height;
return PadPosX / 2.0f * width / 1024.0f;
}
static float getDevicePosY( float PadPosY )
{
AppDelegate* appDelegate = [[UIApplication sharedApplication] delegate];
CGRect f = appDelegate.window.frame;
float height = f.size.width < f.size.height ? f.size.width : f.size.height;
return PadPosY / 2.0f * height / 768.0f;
}
static float getDevicePosW( float PadPosW )
{
AppDelegate* appDelegate = [[UIApplication sharedApplication] delegate];
CGRect f = appDelegate.window.frame;
float height = f.size.width < f.size.height ? f.size.width : f.size.height;
return PadPosW / 2.0f * height / 768.0f;
}
static float getDevicePosH( float PadPosH )
{
AppDelegate* appDelegate = [[UIApplication sharedApplication] delegate];
CGRect f = appDelegate.window.frame;
float height = f.size.width < f.size.height ? f.size.width : f.size.height;
return PadPosH / 2.0f * height / 768.0f;
}
The other buttons are generally all in the correct places, it just seems to be the background image files that are the problem.
An example of how I initialise one of the backgrounds is this;
UIImage* imageBackground = [UIImage imageNamed: #"logo_background"];
UIImageView *viewBackground = [[UIImageView alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.height, self.view.frame.size.width)];
[viewBackground setImage:imageBackground];
[self.view addSubview: viewBackground];
Exact calling is;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIImage* imageBackground = [UIImage imageNamed: #"logo_background"];
UIImageView *viewBackground = [[UIImageView alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.height, self.view.frame.size.width)];
[viewBackground setImage:imageBackground];
[self.view addSubview: viewBackground];
UIImage* imageNameText = [UIImage imageNamed: #"logo_name_textfield"];
UIImage* imageNameLabel = [UIImage imageNamed: #"logo_namelabel"];
UIImage* imageNextButton = [UIImage imageNamed: #"logo_next_button"];

Answer 1

I managed to fix this using a combination of the answer posted above by norders, but what to do is this;
Swap
UIImageView *viewBackground = [[UIImageView alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.height, self.view.frame.size.width)];
With
UIImageView *viewBackground = [[UIImageView alloc] initWithFrame:self.view.bounds];
But add the following to the top level view,
+ (CGRect)screenBounds {
CGRect bounds = CGRectMake(0, 0, 0, 0);
bounds.size = [self screenSize];
return bounds;
}
+ (CGSize)screenSizeForOrientation:(UIInterfaceOrientation)orientation {
CGSize screenSize = [UIScreen mainScreen].bounds.size;
if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1) {
UIInterfaceOrientation current = [UIApplication sharedApplication].statusBarOrientation;
if (UIInterfaceOrientationIsLandscape(current)) {
return (UIInterfaceOrientationIsLandscape(orientation)) ? screenSize : CGSizeMake(screenSize.height, screenSize.width);
} else {
return (UIInterfaceOrientationIsLandscape(orientation)) ? CGSizeMake(screenSize.height, screenSize.width) : screenSize;
}
} else {
return (UIInterfaceOrientationIsLandscape(orientation)) ? CGSizeMake(screenSize.height, screenSize.width) : screenSize;
}
}
+ (CGRect)screenBoundsForOrientation:(UIInterfaceOrientation)orientation {
CGRect bounds = CGRectMake(0, 0, 0, 0);
bounds.size = [self screenSizeForOrientation:orientation];
return bounds;
}
+ (CGSize)screenSize {
CGSize screenSize = [UIScreen mainScreen].bounds.size;
if ((NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1) && UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation)) {
return CGSizeMake(screenSize.height, screenSize.width);
} else {
return screenSize;
}
}
I credit this fix to a website, I found whilst searching the answer, here;
http://perrymitchell.net/article/ios-screen-size-bounds-normalisation/
Thank you to norders also.