カスタム三角形UICollectionviewCell collectionview

Question

通常、UICollectionviewcellは長方形の箱型であり、私たちはカスタムUICollectionViewCellの外観を変更できますが、私の場合、セルは三角形や単純な長方形以外の形状にしたいこの機能は？

Answer 1

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { 
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) 
    var path = UIBezierPath(); 
    var mask = CAShapeLayer(); 




      path.moveToPoint(CGPoint(x: 0,y: 0)) 
      path.addLineToPoint(CGPoint(x: cell.bounds.size.width-(cell.bounds.size.width/2), y:cell.bounds.size.width-(cell.bounds.size.width/2))) 
      path.addLineToPoint(CGPoint(x: cell.bounds.size.width, y: 0)) 
      path.addLineToPoint(CGPoint(x: 0, y: 0)) 

      mask.frame = cell.bounds 
      mask.path = path.CGPath 
      cell.layer.mask = mask 




    cell.backgroundColor = UIColor.redColor() 
    return cell 
} 

触れたと、これは簡単な解決策であるブールプロパティを変更する場合は、はいあなたがより良い1のために行くことができ、カスタムセルに、このマスキングコードを持参した方がよいと検出よります。

カスタムセルのコード。

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { 
    super.touchesBegan(touches, withEvent: event) 
     let touch : UITouch! = touches.first 

     self.clickedLocation = touch.locationInView(touch.view) 

     print(self.clickedLocation.x) 
     print(self.clickedLocation.y) 

    //put condition on x and y here and get controller and change boolean property . 
    if self.clickedLocation.y < 100 
    { 

    ((UIApplication.sharedApplication().keyWindow?.rootViewController) as? collectionViewController)?.boole = true 
    } 
    else 
    { 
     ((UIApplication.sharedApplication().keyWindow?.rootViewController) as? collectionViewController)?.boole = false 
    } 
} 


} 

viewControllerのコード。

override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) { 

     if boole == false{ 
      print("hello") 
     } 
     else{ 
      print("bello") 
     } 
    } 

ここでbooleはコントローラの単純なブール変数です。

参照のためのカスタムセルの完全なコード。

import UIKit 

    class CollectionViewCell: UICollectionViewCell { 
     var clickedLocation = CGPoint() 
     var path : UIBezierPath! 
     var mask : CAShapeLayer! 

     override func drawRect(rect: CGRect) { 
      super.drawRect(rect) 

      path = UIBezierPath(); 
      mask = CAShapeLayer(); 

      path!.moveToPoint(CGPoint(x: 0,y: 0)) 
      path!.addLineToPoint(CGPoint(x: self.bounds.size.width-(self.bounds.size.width/2), y:self.bounds.size.width-(self.bounds.size.width/2))) 
      path!.addLineToPoint(CGPoint(x: self.bounds.size.width, y: 0)) 
      path!.addLineToPoint(CGPoint(x: 0, y: 0)) 

      mask!.frame = self.bounds 
      mask!.path = path!.CGPath 
      self.layer.mask = mask 


     } 
     override func awakeFromNib() { 
      super.awakeFr 

omNib() 
     // Initialization code 
    } 
    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { 
    super.touchesBegan(touches, withEvent: event) 
     let touch : UITouch! = touches.first 

     self.clickedLocation = touch.locationInView(touch.view) 

      if  path.containsPoint(self.clickedLocation) 
     { 
       ((UIApplication.sharedApplication().keyWindow?.rootViewController) as? collectionViewController)?.boole = true 
     } 
      else{ 
       ((UIApplication.sharedApplication().keyWindow?.rootViewController) as? collectionViewController)?.boole = false 
     } 



    } 


}