ios - Sliding a view controller from bottom with a Gesture -

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i have question (objective-c related).

i want create sliding bottom viewcontroller on top of root map view controller click on annotation.

1) after click on annotation should slide bottom , show 10% of height;
2) after upward swipe gesture - should show 100% if user drags upwards fully;
3) on downward gesture user should able decrease visible height 10% again;
4) on mapview click bottom viewcontroller should hide.

i'm including visual scheme of process implementation.

enter image description here

any ideas very appreciated!

check demo

nhslidingcontroller

panningviewcontroller


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