How to read from a plist with Swift 3 iOS app

Question

-Disclaimer-
I'm extremely new to iOS and Swift development, but I'm not particularly new to programming.

I have a basic iOS application with Swift3 elements in it.
I've created a plist file with some entries I want to read and display in my application. (No write access is necessary)

How can you read a value for a given key for a bundled plist file, in Swift3?

This seems like a really simple question to me, but a bunch of searching is making me question my whole conceptual approach.

Helpful tips would be appreciated.

Answer 1

Same way you have done in Swift 2.3 or lower just syntax is changed.

if let path = Bundle.main.path(forResource: "fileName", ofType: "plist") {

    //If your plist contain root as Array
    if let array = NSArray(contentsOfFile: path) as? [[String: Any]] {

    }

    ////If your plist contain root as Dictionary
    if let dic = NSDictionary(contentsOfFile: path) as? [String: Any] {

    }
}

Note: In Swift it is better to use Swift's generic type Array and Dictionary instead of NSArray and NSDictionary.

Edit: Instead of NSArray(contentsOfFile: path) and NSDictionary(contentsOfFile:) we can also use PropertyListSerialization.propertyList(from:) to read data from plist file.

if let fileUrl = Bundle.main.url(forResource: "fileName", withExtension: "plist"),
   let data = try? Data(contentsOf: fileUrl) {
       if let result = try? PropertyListSerialization.propertyList(from: data, options: [], format: nil) as? [[String: Any]] { // [String: Any] which ever it is 
            print(result)
       }
}