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iOS

Posted by Hamza Ansari
Hamza Ansari
34 Points

How do I display this data as an IBOutlet?

I've written the following function which saves a vote to my database on Parse. That much is complete, and each time a user clicks on the vote button, a vote is saved to the "VoteCount" class. Now, how do I display the number of votes in the class VoteCount as an IBOutlet? Do I need to display it as a println function, and what would it be? Here's my code under the IBAction function: 

   @IBAction func addVote() {
        var voteCount1 = PFObject(className: "VoteCount")
        voteCount1["votes"] = 0
        voteCount1["optionName"] = "crepes"
        voteCount1.saveInBackgroundWithTarget(nil, selector: nil)

    var query = PFQuery(className: "VoteCount")
    query.getObjectInBackgroundWithId("d9FwODwQeh") {
        (voteCount1: PFObject!, error: NSError!) -> Void in
        if error != nil {
            NSLog("%@", error)
        } else {
            voteCount1["votes"] = 1
            voteCount1.incrementKey("VoteCount")
        voteCount1.saveInBackgroundWithTarget(nil, selector: nil)
        }
        }
    }
}
Thorsten Herbst
Thorsten Herbst
11,935 Points

Do you have an IBOutlet?

Hamza Ansari
Hamza Ansari
34 Points

I do now, it is posted below. Do you know where I can write my text and how? I'm totally lost there.

2 Answers

Rutger Farry
Rutger Farry
10,722 Points

Just make some UILabels and set their text property to be the voteCount. If you want to add text to the label besides just a number, for example instead of saying 72, saying "The number of votes for Crepes is 72", set the text property to:

yourLabelName.text = [[NSString] stringWithFormat:@"The number of votes for Crepes is %d", voteCount1["votes"]];

Hamza Ansari
Hamza Ansari
34 Points

Is that written in Objective-C? My code is in swift. I've created the IBOutlet but I'm not sure how to set the text property, or where to put it. Is that under IBOutlet or IBAction? Here's my updated code: 

@IBOutlet weak var votesDisplay1: UILabel!


@IBAction func addVote(sender: AnyObject) {
    var voteCount1 = PFObject(className: "VoteCount")
    voteCount1["votes"] = 0
    voteCount1["optionName"] = "crepes"

    var query = PFQuery(className: "VoteCount")
    query.getObjectInBackgroundWithId("d9FwODwQeh") {
        (voteCount1: PFObject!, error: NSError!) -> Void in
        if error != nil {
            NSLog("%@", error)
        } else {
            voteCount1["votes"] = 1
            voteCount1.incrementKey("VoteCount")
        voteCount1.saveInBackgroundWithTarget(nil, selector: nil)
        }
        }
}
Rutger Farry
Rutger Farry
10,722 Points

Your IBOutlet, votesDisplay is an instance of UILabel that you laid out in storyboard. So it will be a property of votesDisplay. Check the Apple Documentation of UILabel and figure out what property it is you have to set.

PS: To quickly access the Apple Docs while in Xcode press CMD + Shift + 0.

Hamza Ansari
Hamza Ansari
34 Points

When I try to add the votesDisplay1.text under the IBOutlet I just get an Expected declaration error; are you sure the label needs to be the same as the weak variable that the IBOutlet is named as, or does it need to be named something else, like the function addVote in the IBAction? I've also tried self.votesDisplay1.text as well.

Also I don't know if that code is written in Swift, is it?

Rutger Farry
Rutger Farry
10,722 Points
Rutger Farry
Rutger Farry
10,722 Points

Sorry I only know Objective-C right now. I haven't delved into Swift syntax. You just need to find out how to change the text property using Swift code instead of my objective-c.

Hamza Ansari
Hamza Ansari
34 Points

That's fine, but thanks for the help!

Rutger Farry
Rutger Farry
10,722 Points

No problem! Good luck!