How to present a half modal view controller over the top with iOS 7 custom transitions

Question

How would I go about presenting a \"half view\" controller over the top of main view controller?

Requirements: - Present a second view controller that slides over the to

Answer 1

One way to do it is to add the "half modal" controller as a child view controller, and animate its view into place. For this example, I created the "half modal" controller in the storyboard with a frame that's half the height of a 4" iPhone screen. You could use more dynamic methods to account for different screen sizes, but this should get you started.

@interface ViewController ()
@property (strong,nonatomic) UIViewController *modal;
@end

@implementation ViewController


- (IBAction)toggleHalfModal:(UIButton *)sender {
    if (self.childViewControllers.count == 0) {
        self.modal = [self.storyboard instantiateViewControllerWithIdentifier:@"HalfModal"];
        [self addChildViewController:self.modal];
        self.modal.view.frame = CGRectMake(0, 568, 320, 284);
        [self.view addSubview:self.modal.view];
        [UIView animateWithDuration:1 animations:^{
            self.modal.view.frame = CGRectMake(0, 284, 320, 284);;
        } completion:^(BOOL finished) {
            [self.modal didMoveToParentViewController:self];
        }];
    }else{
        [UIView animateWithDuration:1 animations:^{
            self.modal.view.frame = CGRectMake(0, 568, 320, 284);
        } completion:^(BOOL finished) {
            [self.modal.view removeFromSuperview];
            [self.modal removeFromParentViewController];
            self.modal = nil;
        }];
    }
}