Example
UIView *view = [[UIView alloc] init];
[self.view addSubview:view];
//Use the function if you want to use height as constraint
[self addView:view onParentView:self.view withHeight:200.f];
//Use this function if you want to add view with respect to parent and should resize with it
[self addFullResizeConstraintForSubview:view addedOnParentView:self.view];
Functions
Function to add view with fixed height using autolayout constraints
-(void)addView:(UIView*)subView onParentView:(UIView*)parentView withHeight:(CGFloat)height{
subView.translatesAutoresizingMaskIntoConstraints = NO;
NSLayoutConstraint *trailing =[NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeTrailing
multiplier:1.0
constant:10.f];
NSLayoutConstraint *top = [NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:10.f];
NSLayoutConstraint *leading = [NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeLeading
multiplier:1.0
constant:10.f];
[parent addConstraint:trailing];
[parent addConstraint:top];
[parent addConstraint:leading];
NSLayoutConstraint *heightConstraint =[NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeHeight
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:0
multiplier:0.0
constant:height];
[subView addConstraint:heightConstraint];
}
Function add full resize constraint for created UIView.
-(void)addFullResizeConstraintForSubview:(UIView*)subView addedOnParentView:(UIView*)parentView{
subView.translatesAutoresizingMaskIntoConstraints = NO;
NSLayoutConstraint *trailing =[NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeTrailing
multiplier:1.0
constant:10.f];
NSLayoutConstraint *top = [NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:10.f];
NSLayoutConstraint *leading = [NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeLeading
multiplier:1.0
constant:10.f];
NSLayoutConstraint *bottom =[NSLayoutConstraint
constraintWithItem:subView
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:parent
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:0.f];
[parent addConstraint:trailing];
[parent addConstraint:top];
[parent addConstraint:leading];
[parent addConstraint:bottom];
}
