CODEWITHSUNDEEP
iosxcodeswift
rezamagnet
rezamagnet

Reputation: 7

how highlight bar button item? (Swift)

i use toolbar items for using action properties, i want when i tapped on on of the items, images be change to highlighted image.

this is my all three buttons :

@IBAction func audio(sender: AnyObject) {
    self.scView.contentOffset = CGPointMake(0,0);
}

@IBAction func mainBtn(sender: AnyObject) {
    self.scView.contentOffset = CGPointMake(415,0);
}

@IBAction func videoBtn(sender: AnyObject) {
    self.scView.contentOffset = CGPointMake(830,0);
}

@IBOutlet var inpt: UITextField!
@IBOutlet var scView: UIScrollView!

this is my app picture: image

thanks

Upvotes: 0

Views: 783

Answers (1)

Russell
Russell

Reputation: 5554

If all you want is to show the button with a highlighted images while you are pressing the button - you can do that through the storyboard - you can set the image for each button in the default state and also in highlighted - but when you release the button, it goes back to the original image.

If you want the image to toggle when you select the button, you're going to have to add outlets for the buttons, and a button state variable (if it only changes once, and never goes back to the original, then you don't need the state)

Here's an example of how you might do it - updated to reset the 'other' button

@IBOutlet weak var mainButton: UIButton!
@IBOutlet weak var videoButton: UIButton!

var mainButtonSelected : Bool = false
var videoButtonSelected : Bool = false

@IBAction func mainButton(sender: AnyObject)
{
    mainButtonSelected = !mainButtonSelected // toggle state
    if mainButtonSelected
    {
        // highlight the mainButton
        mainButton.setImage(UIImage(named: "imageMainHighlight.png"), forState: .Normal)

        // clear the highlight (if any) on videoButton
        videoButton.setImage(UIImage(named: "imageVideoDefault.png"), forState: .Normal)

        // UPDATED
        // make sure the videoButtonSelected flag is correct
        videoButtonSelected = false
        // UPDATED
    }
    else
    {
        // clear the highlight on mainButton, no need to do anything with videoButton
        mainButton.setImage(UIImage(named: "imageMainDefault.png"), forState: .Normal)
    }

    // add any other code you need here
}

@IBAction func videoButton(sender: AnyObject)
{
    videoButtonSelected = !videoButtonSelected // toggle state
    if videoButtonSelected
    {
        // highlight videoButton
        videoButton.setImage(UIImage(named: "imageVideoHighlight.png"), forState: .Normal)
        // clear the highlight (if any) on mainButton
        mainButton.setImage(UIImage(named: "imageMainDefault.png"), forState: .Normal)

        // UPDATED
        // make sure the mainButtonSelected flag is correct
        mainButtonSelected = false
        // UPDATED
    }
    else
    {
        // clear the highlight on videoButton, no need to do anything for mainButton
        videoButton.setImage(UIImage(named: "imageVideoDefault.png"), forState: .Normal)
    }

    // add any other code you need here
}

Upvotes: 1

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