UIButton Action doesn't call in Swift? - ios

Question

In my project I have create the Left View and Right View, its dynamically show two different Views, Left View side create firstView and the FirstView inside show Title, Comments, Image and Video. And Also RightView side create secondView inside show Title,Comments, Image and Video. Image and Video show only some of the Views. The design is fully created programmatically, my design is given below,
My problem is play button(UIButton) Action not Called why?
I don't know,
my code is give below, UIButton Name: btnPlay, Action Name: buttonAction:
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var scrollViewBase: UIScrollView!
var leftView = UIView()
var rightView = UIView()
var wholeYLeft = CGFloat()
var wholeYRight = CGFloat()
let btnPlay = UIButton()
var myArrayOfDict: NSArray = [
["Title": "MacBook", "Text": "Our goal with MacBook was to do the impossible: engineer a full-sized experience into the lightest and most compact Mac notebook ever. That meant reimagining every element to make it not only lighter and thinner but also better.", "Image":"MacBook1","video":""],
["Title": "OS X", "Text": "OS X is the operating system that makes it possible to do all the things you do on a Mac.", "Image":"","video":""],
["Title": "MacBook Pro", "Text": "Now with the force Touch trackpad,longer battery life and faster flash storage", "Image":"MacBookPro1","video":""],
["Title": "Mac Mini", "Text": "Mac mini is an affordable powerhouse that packs the entire Mac experience into a 19.7cm-square frame. Just connect your own display, keyboard and mouse, and you’re ready to make big things happen.", "Image":"Mini","video":""],
["Title": "iMac", "Text": "The idea behind iMac has never wavered: to craft the ultimate desktop experience. The best display, paired with high-performance processors, graphics and storage ", "Image":"","video":""],
["Title": "MacBook Air", "Text": "The 11-inch MacBook Air lasts up to 9 hours between charges and the 13-inch model lasts up to an incredible 12 hours. So from your morning coffee till your evening commute, you can work unplugged.", "Image":"VideoThumn","video":"Official Apple MacBook Air Video YouTube.mp4"]
]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.title = "Dynamic Cell"
leftView.frame = CGRectMake(0, 0, self.view.frame.width/2, self.view.frame.height)
rightView.frame = CGRectMake(self.view.frame.width/2, 0, self.view.frame.width/2, self.view.frame.height)
// leftView.backgroundColor = UIColor.lightGrayColor()
// rightView.backgroundColor = UIColor.grayColor()
self.scrollViewBase.addSubview(leftView)
self.scrollViewBase.addSubview(rightView)
self.callViewMethod()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func callViewMethod() {
var yFloatLeft : CGFloat! = 5
var yFloatRight : CGFloat! = 5
wholeYLeft = 0
wholeYRight = 0
for var i = 0; i < myArrayOfDict.count; i++ {
let isCheckImage = myArrayOfDict[i].valueForKey("Image") as! String
let isCheckVideo = myArrayOfDict[i].valueForKey("video") as! String
let str = myArrayOfDict[i].valueForKey("Text") as? String
let boundingRectHeight = str!.boundingRectWithSize(CGSizeMake(self.leftView.frame.width-10, CGFloat.max),
options:NSStringDrawingOptions.UsesLineFragmentOrigin,
attributes: [NSFontAttributeName: UIFont(name: "Arial", size: 14.0)!], context:nil).size.height + 60.0
if(i%2 == 0) {
let firstView = UIView()
print(yFloatLeft)
if(isCheckImage == "") {
firstView.frame = CGRectMake(5, yFloatLeft, self.leftView.frame.width-10, 30 + boundingRectHeight)
} else {
firstView.frame = CGRectMake(5, yFloatLeft, self.leftView.frame.width-10, 180 + boundingRectHeight)
}
// firstView.backgroundColor = UIColor.redColor()
firstView.layer.borderWidth = 2.0
firstView.layer.borderColor = UIColor.lightGrayColor().CGColor
leftView.addSubview(firstView)
let lblTitle = UILabel()
lblTitle.frame = CGRectMake(0, 0, self.leftView.frame.width-10, 30)
lblTitle.textAlignment = NSTextAlignment.Center
lblTitle.text = myArrayOfDict[i].valueForKey("Title") as? String
let lblText = lblInset()
lblText.frame = CGRectMake(0, 30, self.leftView.frame.width-10, boundingRectHeight)
lblText.text = myArrayOfDict[i].valueForKey("Text") as? String
lblText.numberOfLines = 0
lblText.lineBreakMode = .ByWordWrapping
lblText.font = UIFont(name: "Arial", size: 16)
lblText.textAlignment = NSTextAlignment.Justified
let mainImageView = UIImageView()
if(isCheckImage == "") {
mainImageView.hidden = true
yFloatLeft = yFloatLeft + 30 + boundingRectHeight + 10
} else {
mainImageView.hidden = false
mainImageView.frame = CGRectMake(0, 30 + boundingRectHeight, self.leftView.frame.width-10, 150)
mainImageView.image = UIImage(named: (myArrayOfDict[i].valueForKey("Image") as? String)!)
if(isCheckVideo == "") {
btnPlay.hidden = true
} else {
btnPlay.hidden = false
btnPlay.frame = CGRectMake((mainImageView.frame.width/2)-10, (mainImageView.frame.height/2)-10, 30, 30)
btnPlay.backgroundColor = UIColor.blackColor()
btnPlay.userInteractionEnabled = true
btnPlay.addTarget(self, action: "buttonAction:", forControlEvents: .TouchUpInside)
btnPlay.setImage(UIImage(named: "Play"), forState: .Normal)
mainImageView.addSubview(btnPlay)
}
yFloatLeft = yFloatLeft + 30 + boundingRectHeight + 160
}
firstView.addSubview(lblTitle)
firstView.addSubview(lblText)
firstView.addSubview(mainImageView)
firstView.bringSubviewToFront(btnPlay)
} else {
let secondView = UIView()
if(isCheckImage == "") {
secondView.frame = CGRectMake(5, yFloatRight, self.rightView.frame.width-10, 30 + boundingRectHeight)
} else {
secondView.frame = CGRectMake(5, yFloatRight, self.rightView.frame.width-10, 180 + boundingRectHeight)
}
// secondView.backgroundColor = UIColor.purpleColor()
secondView.layer.borderWidth = 2.0
secondView.layer.borderColor = UIColor.lightGrayColor().CGColor
rightView.addSubview(secondView)
let lblTitle = UILabel()
lblTitle.frame = CGRectMake(0, 0, self.leftView.frame.width-10, 30)
lblTitle.textAlignment = NSTextAlignment.Center
lblTitle.text = myArrayOfDict[i].valueForKey("Title") as? String
let lblText = lblInset()
lblText.frame = CGRectMake(0, 30, self.leftView.frame.width-10, boundingRectHeight)
lblText.text = myArrayOfDict[i].valueForKey("Text") as? String
lblText.numberOfLines = 0
lblText.lineBreakMode = .ByWordWrapping
lblText.font = UIFont(name: "Arial", size: 16)
lblText.textAlignment = NSTextAlignment.Justified
let mainImageView = UIImageView()
if(isCheckImage == "") {
mainImageView.hidden = true
yFloatRight = yFloatRight + 30 + boundingRectHeight + 10
} else {
mainImageView.hidden = false
mainImageView.frame = CGRectMake(0, 30 + boundingRectHeight, self.leftView.frame.width-10, 150)
mainImageView.image = UIImage(named: (myArrayOfDict[i].valueForKey("Image") as? String)!)
if(isCheckVideo == "") {
btnPlay.hidden = true
} else {
btnPlay.hidden = false
btnPlay.frame = CGRectMake((mainImageView.frame.width/2)-10, (mainImageView.frame.height/2)-10, 30, 30)
btnPlay.userInteractionEnabled = true
btnPlay.backgroundColor = UIColor.blackColor()
btnPlay.setImage(UIImage(named: "Play"), forState: .Normal)
btnPlay.addTarget(self, action: Selector("buttonAction:"), forControlEvents: .TouchUpInside)
mainImageView.addSubview(btnPlay)
}
yFloatRight = yFloatRight + 30 + boundingRectHeight + 160
}
secondView.addSubview(lblTitle)
secondView.addSubview(lblText)
secondView.addSubview(mainImageView)
secondView.bringSubviewToFront(btnPlay)
}
wholeYLeft = yFloatLeft
wholeYRight = yFloatRight
}
print(wholeYLeft)
print(wholeYRight)
leftView.frame = CGRectMake(0, 0, self.view.frame.width/2, wholeYLeft)
rightView.frame = CGRectMake(self.view.frame.width/2, 0, self.view.frame.width/2, wholeYRight)
if(wholeYRight > wholeYLeft) {
self.scrollViewBase.contentSize = CGSize(width:self.view.frame.width, height: wholeYRight)
} else {
self.scrollViewBase.contentSize = CGSize(width:self.view.frame.width, height: wholeYLeft)
}
}
func buttonAction(sender:UIButton!) {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let controller = storyboard.instantiateViewControllerWithIdentifier("PlayViewController") as! PlayViewController
controller.lblTitle.text = myArrayOfDict[5].valueForKey("Title") as? String
controller.lblComments.text = myArrayOfDict[5].valueForKey("Text") as? String
self.presentViewController(controller, animated: true, completion: nil)
}
}

Answer 1

I got an Answer, In UIButton (btnPlay) add subview give UIImageView, my problem is mainImageView.addSubview(btnPlay), so change the subView to UIView instead of UIImageView correct code is
secondView.addSubview(btnPlay)
secondView.bringSubviewToFront(btnPlay)
its working for me

Answer 2

You have to enable user interaction for dynamically created Imageview, so write one more line after,
let mainImageView = UIImageView()
mainImageView.userInteractionEnabled = true
Hope this will work.

Answer 3

You have to tag the button then only it can recognise which button is that
btnPlay.tag = 1