NEW! Pre-order my latest book, Testing Swift! >>

How to share content with UIActivityViewController

Paul Hudson       @twostraws

Before iOS 6.0 was released there were a number of third-party libraries that tried to simplify the sharing of content, but even with those libraries in place it was still far too hard. Fortunately, Apple added UIActivityViewController, a class that makes sharing to any service as simple as telling it what kind of content you have.

The nice thing about UIActivityViewController is that it automatically takes advantage of the apps the user has installed. If they have configured Twitter, they can post tweets; if they have configured Facebook, they can post to their timeline; if they have a printer configured, they can print your images; and more. It takes no extra work from you: you just tell iOS what kind of content you want to share, and it does the rest.

Here's how you share an image:

if let image = UIImage(named: "myImage") {
    let vc = UIActivityViewController(activityItems: [image], applicationActivities: [])
    present(vc, animated: true)
}

And here's an example of sharing a text and an image:

let shareText = "Hello, world!"

if let image = UIImage(named: "myImage") {
    let vc = UIActivityViewController(activityItems: [shareText, image], applicationActivities: [])
    present(vc, animated: true)
}

If you want to share a URL to a website, make sure you wrap it up in a URL first.

Available from iOS 6 – see Hacking with Swift tutorial 3

Did this solution work for you? Please pass it on!

Other people are reading…

About the Swift Knowledge Base

This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

Get my latest video for free

Learn about value types, functional programming, and protocol-oriented programming in this new video – it's free!

MASTER SWIFT NOW
Buy Testing Swift Buy Practical iOS 12 Buy Pro Swift Buy Swift Design Patterns Buy Swift Coding Challenges Buy Server-Side Swift (Vapor Edition) Buy Server-Side Swift (Kitura Edition) Buy Hacking with macOS Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with Swift Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let me know!

Average rating: 3.0/5

Click here to visit the Hacking with Swift store >>