SwiftUI Custom Dropdown Tutorial

In this SwiftUI tutorial, you’ll learn how to build a custom dropdown menu from scratch using GeometryReader, animations, and reusable layout techniques .
We’ll walk through each step in a simple and visual way — from measuring view sizes, controlling alignment, and animating transitions, to building a complete interactive dropdown component .
By the end of this video, you’ll understand how to create a fully dynamic and polished dropdown menu that works on any screen size and adapts to its content automatically .
Perfect for iOS apps that need flexible UI components without relying on UIKit or third-party libraries .
Let’s build it together — clean, reusable, and SwiftUI all the way .

Source code

Follow Me for More SwiftUI Content

note the voiceover created with AI

[akversii]

Fire! Nice work bro, this AI voice really complimented the video.

[CarlaSophie]

I noticed something illogical with fromTop. With your code, when setting fromTop to true it actually does the opposite, it comes up from the bottom. So what I did was just change the variable name to fromBottom, which makes more sense and is less work than changing all bits that work with "if fromBottom" to do the opposite.

[FabricioMTL]

Hey I have a question do you know how to make custom swipe action work with scroll view 4:15

[Private-]

Why not make it easy by explaining in Xcode?