Layout Issue

gistfile1.txt

-  (void)addConstraints {

    [self.view removeConstraints:self.view.constraints];
    NSDictionary *views = NSDictionaryOfVariableBindings(_contactImageProperty,_peopleAllowLabelProperty,_shareCodesDefaultMessageLabelProperty,_continueBtnProperty);
    _contactImageProperty.translatesAutoresizingMaskIntoConstraints = NO;
    _peopleAllowLabelProperty.translatesAutoresizingMaskIntoConstraints = NO;
    _shareCodesDefaultMessageLabelProperty.translatesAutoresizingMaskIntoConstraints = NO;
    _continueBtnProperty.translatesAutoresizingMaskIntoConstraints = NO;

    // contactImageProperty
    NSArray *constraints = [NSArray arrayWithObject:[NSLayoutConstraint constraintWithItem:_contactImageProperty attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0.0f]];

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_contactImageProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:200]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-30-[_contactImageProperty]" options:0 metrics:nil views:views]];


    // peopleAllowLabelProperty
    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_peopleAllowLabelProperty attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1.0f constant:0.0f]];

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_peopleAllowLabelProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:50]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_contactImageProperty]-10-[_peopleAllowLabelProperty]" options:0 metrics:nil views:views]];


    // shareCodesDefaultMessageLabelProperty

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_shareCodesDefaultMessageLabelProperty attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1.0f constant:0.0f]];

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_shareCodesDefaultMessageLabelProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:100]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[_shareCodesDefaultMessageLabelProperty]-|" options:0 metrics:nil views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_peopleAllowLabelProperty]-100-[_shareCodesDefaultMessageLabelProperty]" options:0 metrics:nil views:views]];


    // continueBtnProperty

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_continueBtnProperty attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1.0f constant:0.0f]];

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_continueBtnProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:50]];

    constraints = [constraints arrayByAddingObject:[NSLayoutConstraint constraintWithItem:_continueBtnProperty attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeWidth multiplier:1.0f constant:300]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_continueBtnProperty]-10-|" options:0 metrics:nil views:views]];

    [self.view addConstraints:constraints];

}



- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    [super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];

    NSDictionary *views = NSDictionaryOfVariableBindings(_peopleAllowLabelProperty,_shareCodesDefaultMessageLabelProperty,_continueBtnProperty);
    if (UIInterfaceOrientationIsPortrait(toInterfaceOrientation)) {
        [self.view addConstraint:[NSLayoutConstraint constraintWithItem:_contactImageProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:200.0f]];
        [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_peopleAllowLabelProperty]-200-[_shareCodesDefaultMessageLabelProperty]" options:0 metrics:nil views:views]];
    }
    else {
        [self.view addConstraint:[NSLayoutConstraint constraintWithItem:_contactImageProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:100.0f]];
        [self.view addConstraint:[NSLayoutConstraint constraintWithItem:_shareCodesDefaultMessageLabelProperty attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeHeight multiplier:1.0f constant:50]];
        [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_peopleAllowLabelProperty]-20-[_shareCodesDefaultMessageLabelProperty]-[_continueBtnProperty]" options:0 metrics:nil views:views]];
    }
    [self.view setNeedsLayout];
    [self.view setNeedsUpdateConstraints];
}