I am creating custom table view cell class.But I have a problem.
My code:
import UIKit
let incomingTag = 0, outgoingTag = 1
let bubbleTag = 8
class MessageCell: UITableViewCell {
let bubbleImageView: UIImageView
let messageLabel: UILabel
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
bubbleImageView = UIImageView(image: bubbleImage.incoming, highlightedImage: bubbleImage.incomingHighlighed)
bubbleImageView.tag = bubbleTag
bubbleImageView.userInteractionEnabled = true // #CopyMesage
messageLabel = UILabel(frame: CGRectZero)
messageLabel.font = UIFont.systemFontOfSize(15)
messageLabel.numberOfLines = 0
messageLabel.userInteractionEnabled = false // #CopyMessage
super.init(style: .Default, reuseIdentifier: reuseIdentifier)
selectionStyle = .None
contentView.addSubview(bubbleImageView)
bubbleImageView.addSubview(messageLabel)
bubbleImageView.setTranslatesAutoresizingMaskIntoConstraints(false)
messageLabel.setTranslatesAutoresizingMaskIntoConstraints(false)
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Left, relatedBy: .Equal, toItem: contentView, attribute: .Left, multiplier: 1, constant: 10))
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Top, relatedBy: .Equal, toItem: contentView, attribute: .Top, multiplier: 1, constant: 4.5))
bubbleImageView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Width, relatedBy: .Equal, toItem: messageLabel, attribute: .Width, multiplier: 1, constant: 30))
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Bottom, relatedBy: .Equal, toItem: contentView, attribute: .Bottom, multiplier: 1, constant: -4.5))
bubbleImageView.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterX, relatedBy: .Equal, toItem: bubbleImageView, attribute: .CenterX, multiplier: 1, constant: 3))
bubbleImageView.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterY, relatedBy: .Equal, toItem: bubbleImageView, attribute: .CenterY, multiplier: 1, constant: -0.5))
messageLabel.preferredMaxLayoutWidth = 218
bubbleImageView.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Height, relatedBy: .Equal, toItem: bubbleImageView, attribute: .Height, multiplier: 1, constant: -15))
}
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func configureWithMessage(message: Message) {
messageLabel.text = message.text
if message.incoming != (tag == incomingTag) {
var layoutAttribute: NSLayoutAttribute
var layoutConstant: CGFloat
if message.incoming {
tag = incomingTag
bubbleImageView.image = bubbleImage.incoming
bubbleImageView.highlightedImage = bubbleImage.incomingHighlighed
messageLabel.textColor = UIColor.blackColor()
layoutAttribute = .Left
layoutConstant = 10
} else { // outgoing
tag = outgoingTag
bubbleImageView.image = bubbleImage.outgoing
bubbleImageView.highlightedImage = bubbleImage.outgoingHighlighed
messageLabel.textColor = UIColor.whiteColor()
layoutAttribute = .Right
layoutConstant = -10
}
let layoutConstraint: NSLayoutConstraint = bubbleImageView.constraints()[1] as NSLayoutConstraint // `messageLabel` CenterX
layoutConstraint.constant = -layoutConstraint.constant
let constraints: NSArray = contentView.constraints()
let indexOfConstraint = constraints.indexOfObjectPassingTest { (var constraint, idx, stop) in
return (constraint.firstItem as UIView).tag == bubbleTag && (constraint.firstAttribute == NSLayoutAttribute.Left || constraint.firstAttribute == NSLayoutAttribute.Right)
}
contentView.removeConstraint(constraints[indexOfConstraint] as NSLayoutConstraint)
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: layoutAttribute, relatedBy: .Equal, toItem: contentView, attribute: layoutAttribute, multiplier: 1, constant: layoutConstant))
}
}
// Highlight cell #CopyMessage
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
bubbleImageView.highlighted = selected
}
}
let bubbleImage = bubbleImageMake()
func bubbleImageMake() -> (incoming: UIImage, incomingHighlighed: UIImage, outgoing: UIImage, outgoingHighlighed: UIImage) {
let maskOutgoing = UIImage(named: "MessageBubble")!
let maskIncoming = UIImage(CGImage: maskOutgoing.CGImage, scale: 2, orientation: .UpMirrored)!
let capInsetsIncoming = UIEdgeInsets(top: 17, left: 26.5, bottom: 17.5, right: 21)
let capInsetsOutgoing = UIEdgeInsets(top: 17, left: 21, bottom: 17.5, right: 26.5)
let incoming = coloredImage(maskIncoming, 229/255.0, 229/255.0, 234/255.0, 1).resizableImageWithCapInsets(capInsetsIncoming)
let incomingHighlighted = coloredImage(maskIncoming, 206/255.0, 206/255.0, 210/255.0, 1).resizableImageWithCapInsets(capInsetsIncoming)
let outgoing = coloredImage(maskOutgoing, 43/255.0, 119/255.0, 250/255.0, 1).resizableImageWithCapInsets(capInsetsOutgoing)
let outgoingHighlighted = coloredImage(maskOutgoing, 32/255.0, 96/255.0, 200/255.0, 1).resizableImageWithCapInsets(capInsetsOutgoing)
return (incoming, incomingHighlighted, outgoing, outgoingHighlighted)
}
func coloredImage(image: UIImage, red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat) -> UIImage! {
let rect = CGRect(origin: CGPointZero, size: image.size)
UIGraphicsBeginImageContextWithOptions(image.size, false, image.scale)
let context = UIGraphicsGetCurrentContext()
image.drawInRect(rect)
CGContextSetRGBFillColor(context, red, green, blue, alpha)
CGContextSetBlendMode(context, kCGBlendModeSourceAtop)
CGContextFillRect(context, rect)
let result = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return result
}
My app is crashing with this line:
fatal error: init(coder:) has not been implemented:
How can I prevent from this error ? I am using swift.What should I do ? I researched the stackoverflow,I found similiar questions but I couldn't resolve this problem.
