UITableViewCell Class Layout funktioniert nicht programmgesteuert

Question

Was ich frage ist, dass, wenn ich constraint programmatisch ändern die Ausgabe falsch ist, aber wenn gleiche Einschränkung in Storyboard-Ausgabe geändert wird, ist perfekt für mehr Ich lade Bild hoch.

Change of constraints programmatically and the output is smashed

Change the constraint with same constant '0' in storyboard and o/p is perfect

Dies ist mein Code eine bestimmte Zelle:

@IBOutlet var imageView1: UIImageView! 
@IBOutlet var imageView2: UIImageView! 
@IBOutlet var imageView3: UIImageView! 
@IBOutlet var imageView4: UIImageView! 
@IBOutlet var imageView5: UIImageView! 

@IBOutlet var bttnImageCover1: UIButton! 
@IBOutlet var bttnImageCover2: UIButton! 
@IBOutlet var bttnImageCover3: UIButton! 
@IBOutlet var bttnImageCover4: UIButton! 
@IBOutlet var bttnImageCover5: UIButton! 

@IBOutlet var image1HeightCR: NSLayoutConstraint! 
@IBOutlet var image1HeightRR: NSLayoutConstraint! 
@IBOutlet var image2HeightCR: NSLayoutConstraint! 
@IBOutlet var image2HeightRR: NSLayoutConstraint! 
@IBOutlet var image3HeightCR: NSLayoutConstraint! 
@IBOutlet var image3HeightRR: NSLayoutConstraint! 
@IBOutlet var image4HeightCR: NSLayoutConstraint! 
@IBOutlet var image4HeightRR: NSLayoutConstraint! 
@IBOutlet var image5HeightCR: NSLayoutConstraint! 
@IBOutlet var image5HeightRR: NSLayoutConstraint! 

/* StoryBoard Outlets End */ 

var imagesArr    = [UIImageView]() 
var imagesConstraintsArr = [NSLayoutConstraint]() 
var imagesRRConstraintsArr = [NSLayoutConstraint]() 
var bttnCoverArr = [UIButton]() 
var totalImages  = Int() 

override func awakeFromNib() { 
    super.awakeFromNib() 
    // Initialization code 

    imagesArr  = [imageView1,imageView2,imageView3,imageView4,imageView5] 
    imagesConstraintsArr = [image1HeightCR,image2HeightCR,image3HeightCR,image4HeightCR,image5HeightCR] 
    imagesRRConstraintsArr = [image1HeightRR,image2HeightRR,image3HeightRR,image4HeightRR,image5HeightRR] 

    bttnCoverArr   = [bttnImageCover1,bttnImageCover2,bttnImageCover3,bttnImageCover4,bttnImageCover5] 

} 

override func setSelected(_ selected: Bool, animated: Bool) { 
    super.setSelected(selected, animated: animated) 

    // Configure the view for the selected state 
} 

override func layoutSubviews() { 
    print("totalImages in Static cell:\(totalImages)") 
    for i in (totalImages..<imagesConstraintsArr.count){ 
     print("i:\(i)") 
     imagesConstraintsArr[i].constant = 0 **strong text**// This is the devil. I want to change it to 0 to make it disappear but it stretching his upper neighbour view. 
     imagesRRConstraintsArr[i].constant = 0 **strong text**// Another brother of devil 
    } 
} 

Answer 1

Sie müssen imageView.layoutIfNeeded abzufeuern, nachdem Sie die NSLayoutConstraint in Ihrer for-Schleife auf Ihrem UIImageViews aktualisieren, die Sie wollen Aktualisieren Sie die Einschränkungen für.