What is the difference between pushing and presenting a new view?

Sources & Resources

Main Source: 🔗 Ace the iOS Interview

Additional Sources:

Further Reading:

TL/DR

Both pushing and presenting presentation styles have their own default behavior and conventions, so it’s important to understand the differences between the two.

A push transition will add another UIViewController to aUINavigationController’s view hierarchy. The UIViewController that originates thepush should belong to the same UINavigationControlleras the UIViewController thatis being added to the stack.

With a push transition, you will automatically get a back button from the new UIViewController to the previous one. Additionally,you’ll also get the ability to swipe to the right to pop the new UIViewController from the UINavigationController’s view hierarchy without writing any additional code.

Push transitions are only available to UIViewControllers that are embedded in a UINavigationController instance.

Now, turning to presenting a UIViewController(i.e.modal transition).

This is simply the case of one UIViewController presentinganother UIViewController vertically over itself - neither of these UIViewControllers have to be embedded in a UINavigationController.

The modally presented UIViewController will typically appear without a UINavigationBar or UITabBar unless specified otherwise. Remember,though, that different versions of iOS havedifferent default styling for modally presented views.

Finally, the presenting UIViewController is generally responsible for dismissing any modallypresented UIViewController it presents.