samples issue-99: Fixed layout issues in CollectionView, where the sizing was…

samples issue-99: Fixed layout issues in CollectionView, where the sizing was not correctlly being initialized.

CHANGELOG.md

+## 2.12.18
+
+* Fixed layout issues in CollectionView, where the sizing was not correctlly being initialized.
+
 ## 2.12.17
 
 * [pr-979](https://github.com/CosmicMind/Material/pull/979): Added `visibilityOff` icon and updated `TextField` to utilize it.

Sources/iOS/CollectionView.swift

@@ -114,16 +114,14 @@ open class CollectionView: UICollectionView {
      - Parameter frame: A CGRect defining the view's frame.
      */
 	public init(frame: CGRect) {
-        let layout = UICollectionViewFlowLayout()
-        layout.itemSize = CGSize(width: 100, height: 100)
-		super.init(frame: frame, collectionViewLayout: layout)
+        let layout = CollectionViewLayout()
+        super.init(frame: frame, collectionViewLayout: layout)
         prepare()
     }
 	
 	/// A convenience initializer that initializes the object.
 	public init() {
-        let layout = UICollectionViewFlowLayout()
-        layout.itemSize = CGSize(width: 100, height: 100)
+        let layout = CollectionViewLayout()
         super.init(frame: .zero, collectionViewLayout: layout)
         prepare()
 	}

Sources/iOS/CollectionViewController.swift

@@ -99,7 +99,7 @@ extension CollectionViewController {
     fileprivate func prepareCollectionView() {
         collectionView.delegate = self
         collectionView.dataSource = self
-        view.addSubview(collectionView)
+        view.layout(collectionView).edges()
     }
 }
 

Sources/iOS/CollectionViewLayout.swift

@@ -149,7 +149,7 @@ extension CollectionViewLayout {
     open override func layoutAttributesForItem(at indexPath: IndexPath) -> UICollectionViewLayoutAttributes? {
         let attributes = UICollectionViewLayoutAttributes(forCellWith: indexPath)
         let dataSourceItem = dataSourceItems![indexPath.item]
-        
+
         if 0 < itemSize.width && 0 < itemSize.height {
             attributes.frame = CGRect(x: offset.x, y: offset.y, width: itemSize.width - contentEdgeInsets.left - contentEdgeInsets.right, height: itemSize.height - contentEdgeInsets.top - contentEdgeInsets.bottom)
         } else if .vertical == scrollDirection {
@@ -157,6 +157,7 @@ extension CollectionViewLayout {
                 attributes.frame = CGRect(x: contentEdgeInsets.left, y: offset.y, width: collectionView!.bounds.width - contentEdgeInsets.left - contentEdgeInsets.right, height: h)
             
             } else if let v = dataSourceItem.data as? UIView, 0 < v.bounds.height {
+                v.updateConstraintsIfNeeded()
                 v.updateConstraints()
                 v.setNeedsLayout()
                 v.layoutIfNeeded()
@@ -171,6 +172,7 @@ extension CollectionViewLayout {
                 attributes.frame = CGRect(x: offset.x, y: contentEdgeInsets.top, width: w, height: collectionView!.bounds.height - contentEdgeInsets.top - contentEdgeInsets.bottom)
             
             } else if let v = dataSourceItem.data as? UIView, 0 < v.bounds.width {
+                v.updateConstraintsIfNeeded()
                 v.updateConstraints()
                 v.setNeedsLayout()
                 v.layoutIfNeeded()