// 兴趣话题

galaxy/galaxy/Classes/Modules/Community(社区)/V/YHInterestTopicLayout.swift

@@ -9,7 +9,9 @@
 import UIKit
 
 class YHInterestTopicLayout: UICollectionViewFlowLayout {
-        
+     
+    var dataSource:[String] = []
+    weak var layoutDelegate: UICollectionViewDelegateFlowLayout? = nil
     var interItemSpacing: CGFloat = 12.0 // 相邻单元格之间的水平间距
     override func prepare() {
         super.prepare()
@@ -48,4 +50,44 @@ class YHInterestTopicLayout: UICollectionViewFlowLayout {
         }
         return arrCell
     }
+    
+    override var collectionViewContentSize: CGSize {
+        get {
+            let width = self.collectionView?.width ?? 0.0
+            let height = self.calculateHeight()
+            return CGSize(width: width, height: height)
+        }
+    }
+    
+    func calculateHeight() ->CGFloat {
+        if self.dataSource.count <= 0 {
+            return 0.0
+        }
+    
+       guard let delegate = self.layoutDelegate else {
+            return 0.0
+        }
+        let itemHeight = 24.0
+        var currentX = 0.0
+        var height = itemHeight
+        
+        for (index, _) in self.dataSource.enumerated() {
+            if delegate.responds(to: #selector(UICollectionViewDelegateFlowLayout.collectionView(_:layout:sizeForItemAt:))) {
+               let size = delegate.collectionView!(self.collectionView!, layout: self, sizeForItemAt: IndexPath(item: index, section: 0))
+                if index == 0 {
+                    currentX = size.width
+                    height = itemHeight
+                } else {
+                    let targetX = currentX + self.minimumInteritemSpacing + size.width
+                    if targetX <= self.collectionView!.width {
+                        currentX = targetX
+                    } else {
+                        currentX = 0
+                        height += self.minimumLineSpacing + itemHeight
+                    }
+                }
+            }
+        }
+        return height
+    }
 }

galaxy/galaxy/Classes/Modules/Community(社区)/V/YHMyInterestTopicCell.swift

@@ -49,7 +49,6 @@ class YHMyInterestTopicCell: UITableViewCell {
     typealias EditBlock = () -> ()
     var editBlock: EditBlock?
     static let cellReuseIdentifier = "YHMyInterestTopicCell"
-    weak var tableView: UITableView?
     var topicArr:[String] = []
     var userModel:YHUserNameCardInfo = YHUserNameCardInfo() {
         didSet {
@@ -71,23 +70,21 @@ class YHMyInterestTopicCell: UITableViewCell {
                 if self.userModel.topics.count > 0 {
                     self.topicArr.append(contentsOf: self.userModel.topics)
                 }
-                
+                self.layout.dataSource = self.topicArr
                 self.collectionView.reloadData {
-                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, execute: {
-                        let height = self.collectionView.contentSize.height
-                        self.collectionView.snp.remakeConstraints { make in
-                            make.height.equalTo(height)
-                            make.left.equalTo(16)
-                            make.right.equalTo(-16)
-                            make.bottom.equalTo(-16)
-                            make.top.equalTo(self.titleLabel.snp.bottom).offset(12)
-                        }
-                        self.detailLabel.snp.removeConstraints()
-                        self.superview?.setNeedsLayout()
-                        self.superview?.layoutIfNeeded()
-                    })
+                    let height = self.layout.collectionViewContentSize.height
+                    printLog("ABC: \(height)")
+                    self.collectionView.snp.remakeConstraints { make in
+                        make.height.equalTo(height)
+                        make.left.equalTo(16)
+                        make.right.equalTo(-16)
+                        make.bottom.equalTo(-16)
+                        make.top.equalTo(self.titleLabel.snp.bottom).offset(12)
+                    }
                 }
                 
+                self.detailLabel.snp.removeConstraints()
+                
             } else {
                 
                 self.detailLabel.snp.remakeConstraints { make in
@@ -131,6 +128,8 @@ class YHMyInterestTopicCell: UITableViewCell {
     lazy var layout:YHInterestTopicLayout = {
         let layout = YHInterestTopicLayout()
         layout.scrollDirection = .vertical
+        layout.dataSource = self.topicArr
+        layout.layoutDelegate = self
         return layout
     }()