float mapNewX =  self.mapView.frame.origin.x == 0 ? 375 : 0;
float mapNewWidth = mapNewX == 0 ? self.view.frame.size.width : self.view.frame.size.width - mapNewX;

[UIView animateKeyframesWithDuration:0.1 delay:0.0 options:UIViewAnimationCurveEaseOut animations:^
 {
     CGRect mapViewFrame = self.mapView.frame;
     mapViewFrame.origin.x = (mapNewX);
     mapViewFrame.size.width = mapNewWidth;
     self.mapView.frame = mapViewFrame;
 }
completion:^(BOOL finished)
 {
     NSLog(@"OK");
 }];

@property (weak, nonatomic) IBOutlet NSLayoutConstraint *mapLeadingSpace;

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    self.mapLeadingSpace.constant = 0; // default is closed
}

- (IBAction)toggle:(id)sender
{
    self.mapLeadingSpace.constant = self.mapLeadingSpace.constant == 0
        ? self.tableView.frame.size.width    // opened
        : 0;                                 // closed

    [UIView animateWithDuration:.2 animations:^{
        [self.imageView layoutIfNeeded];
    }];
}

[subview setTranslatesAutoresizingMaskIntoConstraints:NO];
[parentview setTranslatesAutoresizingMaskIntoConstraints:NO];

[parentview addSubview:subview];

NSDictionary *views = NSDictionaryOfVariableBindings(subview);
[parentview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[subview]"
                                                                   options:0
                                                                   metrics:nil
                                                                     views:views]];

NSArray *firstConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:[subview]"
                                                                    options:0
                                                                    metrics:nil
                                                                      views:views];
[parentview addConstraints:firstConstraints];
[parentview layoutSubtreeIfNeeded];
[parentview removeConstraints:firstConstraints];

NSArray *secondConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-100-[subview]-100-|"
                                                                     options:0
                                                                     metrics:nil
                                                                       views:views];
[parentview addConstraints:secondConstraints];

subview.superview.wantsLayer = YES;
[NSAnimationContext runAnimationGroup:^(NSAnimationContext* context) {
    [context setDuration:.3];
    [context setAllowsImplicitAnimation:YES];
    [context setTimingFunction: [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut]];
    [subview layoutSubtreeIfNeeded];
} completionHandler:^{
        [[self delegate] createOptionMenuForPDFViewWithInvoice:invoice andSuperView:parentview];
}];

// update constraints…

[UIView animateWithDuration:0.5 animations:^{
    [self.view layoutIfNeeded];
}];

if ([self respondsToSelector:@selector(edgesForExtendedLayout)]) {
    self.edgesForExtendedLayout = UIRectEdgeNone;
}