Sliding a view controller from bottom with a Gesture - ios

Question

I have a question (Objective-C related).
I want to create a sliding from bottom ViewController on top of the Root Map View Controller by a click on the annotation.
1) After a click on the annotation it should slide from bottom and show 10% of the height;
2) after an upward swipe gesture - it should show up to 100% if the user drags it upwards fully;
3) on the downward gesture user should be able to decrease its visible height to 10% again;
4) on the MapView click the bottom ViewController should hide.
I'm including the Visual scheme of the process implementation.
Any ideas are very very appreciated!

Answer 1

check this demo
NHSlidingController
PanningViewController

Answer 2

You can always try to write your own segue animation to transition between ViewControllers. Just make a custom UIStoryboardSegue, and override its perform method. Here is a snippet to start with:
#interface HorizontalSegue : UIStoryboardSegue
#property CGPoint originatingPoint;
#end
#implementation VerticalSegue
- (void)perform {
UIViewController *sourceViewController = self.sourceViewController;
UIViewController *destinationViewController = self.destinationViewController;
NSArray* windowArray = [UIApplication sharedApplication].windows;
if (windowArray.count > 0) {
UIWindow* appWindow = [windowArray lastObject];
[appWindow insertSubview:destinationViewController.view aboveSubview:sourceViewController.view];
}
else
[sourceViewController.view addSubview:destinationViewController.view];
// Store original centre point of the destination view
CGPoint originalCenter = destinationViewController.view.center;
// Set center to start point of the button
destinationViewController.view.center = CGPointMake(self.originatingPoint.x, self.originatingPoint.y*3);
[UIView animateWithDuration:0.25
delay:0.0
options:UIViewAnimationOptionCurveEaseInOut
animations:^{
destinationViewController.view.center = originalCenter;
}
completion:^(BOOL finished){
[sourceViewController presentViewController:destinationViewController animated:NO completion:NULL]; // present VC
}];
}
#end
Using this you can easily make custom animations. I am not totally sure if the part with adding the ViewController to the window is correct, but this is something that you could try and check/correct yourself.
Another way of animating segues is using CATransition:
-(void)perform
{
UIViewController *sourceViewController = (UIViewController*)[self sourceViewController];
UIViewController *destinationController = (UIViewController*)[self destinationViewController];
CATransition* transition = [CATransition animation];
transition.duration = 0.25;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = kCATransitionMoveIn; //kCATransitionMoveIn; //, kCATransitionPush, kCATransitionReveal, kCATransitionFade
transition.subtype = kCATransitionFromLeft; //kCATransitionFromLeft, kCATransitionFromRight, kCATransitionFromTop, kCATransitionFromBottom
[destinationController.view.layer addAnimation:transition forKey:kCATransition];
[sourceViewController presentViewController:destinationController animated:NO completion:nil];
}