Automatically resized imageview - ios

Question

I have a scrollView and imageView in it.
The app works in landscape and portrait mode.
And i use auto layout.
If i use constant for imageview.
images that I loaded into imageviev it automatically expands under its size.
What i have now:
Landscape mode:
and Portrait mode:
I want to make it as in these pictures
Landscape mode:
and Portrait mode:
How do I fix the auto resize in imageview?
P.S. App for iPad
Thank you all for answers!

Answer 1

Here is an example of code based Autolayout that should help you
#import "UniversalViewController.h"
#interface UniversalViewController ()
#property (strong, nonatomic) UIImageView *myImageView;
#end
#implementation UniversalViewController
#synthesize myImageView;
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor blackColor];
UIImage *myImage = [UIImage imageNamed:#"Velvet_Underground_and_Nico.jpg"];
myImageView = [[UIImageView alloc] initWithImage:myImage];
[myImageView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self.view addSubview:myImageView];
[self setWidth:300 andHeight:300 toView:myImageView];
[self centerView1:myImageView toView2:self.view];
}
- (void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
[self.view removeConstraints:self.view.constraints];
[self centerView1:myImageView toView2:self.view];
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {
[self setWidth:450 andHeight:250 toView:myImageView];
} else {
[self setWidth:300 andHeight:300 toView:myImageView];
}
}
#pragma mark custom Autolayout methods
- (void) setWidth:(float)width andHeight:(float)height toView:(UIView *)view {
NSLayoutConstraint *myConstraint;
myConstraint = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:width];
[self.view addConstraint:myConstraint];
myConstraint = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:height];
[self.view addConstraint:myConstraint];
}
- (void) centerView1:(UIView *)view1 toView2:(UIView *)view2 {
NSLayoutConstraint *myConstraint;
myConstraint = [NSLayoutConstraint constraintWithItem:view1 attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:view2 attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0.0];
[self.view addConstraint:myConstraint];
myConstraint = [NSLayoutConstraint constraintWithItem:view1 attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:view2 attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:0.0];
[self.view addConstraint:myConstraint];
}
You should be able to set the size of the images as you require... I hope it helps...