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Getting unexpectedly found nil while unwrapping an Optional value


Getting unexpectedly found nil while unwrapping an Optional value

By : irem
Date : November 14 2020, 04:51 PM
With these it helps I am very new to programming, and I have been looking online for a few days now trying to address this issue that I have been have with my Swift programming. I am new to all of this; and, I have tried my earnest to try and find a solution on my own. But, after this frustrating time, I though that it would be okay to ask the experts. , The error occurs here
code :
myTime = NSUserDefaults.standardUserDefaults().objectForKey("two")!
*import UIKit
class ViewController: UIViewController {

//here I added ? which means optional value
    var myTime: AnyObject? = NSUserDefaults() //creates a var called myTime that can be used to save the time parameter.
    var timer = NSTimer() // creates a variable used by the timer loop.

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

// here I removed ! because value for key "two" may not been set so it is optional value
        myTime = NSUserDefaults.standardUserDefaults().objectForKey("two") //sets timer value to last saved value

//here we check myTime object for nil before converting to NSInteger and checking for 0
        if ( myTime == nil || myTime as NSNumber == 0){ //if the initial value doesnt exhist the if statement creates one.
            NSUserDefaults.standardUserDefaults().setInteger(0, forKey: "two") //sets timer to zero and saves parameter
        }

        timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("action"), userInfo: nil, repeats: true) // Creates a timer at 1 second time interval which then performs function called 'action' and will continue until boolean is set to false or NSTimer is invalidated.
    }

    func action(){

        myTime = Int(myTime as NSNumber) + 1 // increases myTime by 1
        println(myTime) //println(time) // prints myTime

        NSUserDefaults.standardUserDefaults().setInteger(myTime as Int, forKey: "two") // saving variable two with value of 2
        NSUserDefaults.standardUserDefaults().synchronize() // Added synchronize as suggested by LAMMERT WESTERHOFF
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}*


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fatal error: unexpectedly found nil while unwrapping an Optional value (cannot force unwrap value of non-optional type '

fatal error: unexpectedly found nil while unwrapping an Optional value (cannot force unwrap value of non-optional type '


By : Brer Ruthven
Date : March 29 2020, 07:55 AM
wish of those help You should change the method parameter name to func textFieldDidUpdate(sender: UITextField), use guard to unwrap your optional textfield text property and add percent escapes also to your string using query allowed character set.
code :
func textFieldDidUpdate(sender: UITextField) {
    guard
        let text = sender.text,
        query = text.stringByAddingPercentEncodingWithAllowedCharacters(.URLQueryAllowedCharacterSet()),
        url = NSURL(string: "https://google.com/#q=\(query)")
    else { return }
    webView.hidden = false
    webView.loadRequest(NSURLRequest(URL: url))
}
Fatal error: unexpectedly found nil while unwrapping an Optional values Unwrapping

Fatal error: unexpectedly found nil while unwrapping an Optional values Unwrapping


By : Imy
Date : March 29 2020, 07:55 AM
This might help you I have a problem which causes fatal error: unexpectedly found nil while unwrapping an Optional values i must unwrap the cell index in the print("\(cellindex)"). I know this code if let index = cell index {}but it didn't work, it didn't print anything. , You could try something like this:
code :
if cellIndex != nil {
    print(cellIndex)
}
Swift unexpectedly found nil while unwrapping an Optional value - Post Unwrapping my optional variables

Swift unexpectedly found nil while unwrapping an Optional value - Post Unwrapping my optional variables


By : Fikile Makhaye
Date : March 29 2020, 07:55 AM
may help you . I am using the below code and getting an unwrappning , Your temp1 and temp2 Strings aren't properly formatted Doubles.
Assigning Optional String to UILabel in UITableView ends in unexpectedly found nil while unwrapping an Optional value

Assigning Optional String to UILabel in UITableView ends in unexpectedly found nil while unwrapping an Optional value


By : ninmashelly
Date : March 29 2020, 07:55 AM
will help you I have a UITableView in my Swift-written iOS app. This UITableView has 2 classes: TableViewController, to control the table, and TableViewCell, to control the cells of the UITableView. , Possibilities.
There might be two possibilities of this Crash.
Despite multiple unwrapping attempts, fatal error: unexpectedly found nil while unwrapping an Optional value

Despite multiple unwrapping attempts, fatal error: unexpectedly found nil while unwrapping an Optional value


By : Dahlgren
Date : March 29 2020, 07:55 AM
Does that help in viewDidLoad(), you call
var ref = Database.database().reference()
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