How to Print a String from Plist Without "Optional"

How to print a string from plist without Optional ?

One way to get rid of the Optional is to use an exclamation point:

println(todayTitle!)

However, you should do it only if you are certain that the value is there. Another way is to unwrap and use a conditional, like this:

if let theTitle = todayTitle {
    println(theTitle)
}

Paste this program into runswiftlang for a demo:

let todayTitle : String? = "today"
println(todayTitle)
println(todayTitle!)
if let theTitle = todayTitle {
    println(theTitle)
}

Printing value of a optional variable includes the word Optional in Swift

Optional chaining is used here:

let age = self.clientDetail?.getAge()

So return of getAge() is optional value. Try optional binding:

if let age = age {
    println("age.....\(age)")
}

or simply unwrap the age with age!, but this will crash your app if age is nil.

Swift Array is printing word optional from my array dont want to force unwrap

If you print out an optional, you will always have Optional(...) in there. The only way to lose that is to unwrap. That's the only solution.

If you are worried about nil values, check for nil and then unwrap.

Xcode Swift how do I print a value form my custom plist file?

First of all please never use the NSArray/NSDictionary related API in Swift to read a property list. You are throwing away the type information.

However you can read the values with

let array = NSArray(contentsOfFile: path!) as! [[String:Any]]
for item in array {
    let name = item["name"] as! String
    let active = item["active"] as! Bool
    print(name, active)
}

The dedicated and recommended API is PropertyListSerialization :

let url = Bundle.main.url(forResource: "test", withExtension: "plist")!
let data = try! Data(contentsOf: url)
let array = try! PropertyListSerialization.propertyList(from: data, format: nil) as! [[String:Any]]

A better way is the Codable protocol and PropertyListDecoder

struct User : Decodable {
    let name : String
    let active : Bool
}


override func viewDidLoad() {
    super.viewDidLoad()
    
    let url = Bundle.main.url(forResource: "test", withExtension: "plist")!
    let data = try! Data(contentsOf: url)
    let array = try! PropertyListDecoder().decode([User].self, from: data)
    for item in array {
       print(item.name, item.active)
    } 
}

The code must not crash. If it does you made a design mistake

Editor or way to print plist in a clean way without Xcode

There is a "Property List Editor" app as part of OS X (or there used to be, I'm away from my machine at the moment so can't check).

Failing that, you could write one in about half an hour!

indexPath.row printing optional text

Does this work?

print(the_object[indexPath.row].name)

I can't Unwrap a value from a plist key value

Depending on your style preference...

var nsDictionary: NSDictionary?
if let path = Bundle.main.path(forResource: "AppData", ofType: "plist") {
    nsDictionary = NSDictionary(contentsOfFile: path)
}
if let dict = nsDictionary {
    let vTitle = dict["LbVacationsTitle"] as? String
    if let vt = vTitle {
        // ...
    }
}

...or...

var nsDictionary: NSDictionary?
if let path = Bundle.main.path(forResource: "AppData", ofType: "plist") {
    nsDictionary = NSDictionary(contentsOfFile: path)
}
guard let dict = nsDictionary else {
    print("Couldn't get a valid dictionary")
    return
}
let vTitle = dict["LbVacationsTitle"] as? String
guard let vt = vTitle else {
    print("Couldn't find a string matching LbVacationsTitle")
    return
}
// ...

---

Related Topics