1.1.6首页小调整

relax.offline.mp3.music/MP/MPPositive/ViewControllers/Home（首页，各项列表页，艺术家页）/MPPositive_HomeViewController.swift

@@ -40,10 +40,19 @@ class MPPositive_HomeViewController: MPPositive_BaseViewController, UIViewContro
             label.font = UIFont.boldSystemFont(ofSize: 20*width)
         }
         label.textColor = .white
+        label.isUserInteractionEnabled = true
+        label.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(scrollTopAction(_ :))))
         return label
     }()
     //搜索栏
     private lazy var searchView = createSearchView()
+    //导航栏内购是否展示
+    private var isBuyShow:Bool = true
+    //最后一次偏移量
+    private var lastContentOffset: CGFloat = 0
+    //是否用户滚动
+    private var isUserDragging:Bool = false
+    
     //tableView
     private lazy var tableView:UITableView = {
         let tableView = UITableView(frame: .init(x: 0, y: 0, width: screen_Width, height: screen_Height), style: .plain)
@@ -263,6 +272,7 @@ class MPPositive_HomeViewController: MPPositive_BaseViewController, UIViewContro
                 pullDownRefreshCountdown()
                 print("下拉刷新超时.")
             }
+            
         }
         MPPositive_BrowseLoadViewModel.shared.pullDownRefresh{
             [weak self] in
@@ -387,14 +397,60 @@ class MPPositive_HomeViewController: MPPositive_BaseViewController, UIViewContro
             }
         }
         iapVC.modalPresentationStyle = .fullScreen
-        
         present(iapVC, animated: true)
     }
-    
+    @objc private func scrollTopAction(_ sender:UITapGestureRecognizer) {
+        let topOffset = CGPoint(x: 0, y: 0)
+        tableView.setContentOffset(topOffset, animated: true)
+    }
 }
 //MARK: - tableView
 extension MPPositive_HomeViewController: UITableViewDataSource, UITableViewDelegate {
+    // 用户开始拖动scrollView时调用
+    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
+        isUserDragging = true
+        lastContentOffset = scrollView.contentOffset.y // 重置 lastContentOffset
+    }
         
+    // 用户停止拖动scrollView时调用
+    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
+        if !decelerate {
+            isUserDragging = false
+        }
+    }
+        
+    // scrollView停止减速时调用
+    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
+        isUserDragging = false
+    }
+    func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        guard isUserDragging, !MPPositive_BrowseLoadViewModel.shared.isRefresh, lastContentOffset >= -(self.tableView.mj_header?.frame.height ?? 0) else { return }
+        let currentOffset = scrollView.contentOffset.y
+        let scrollDiff = currentOffset - lastContentOffset
+        if scrollDiff >= 30 && isBuyShow == true {
+            //收起来
+            adjustHeight(to: 50*width)
+            isBuyShow = false
+        }else if scrollDiff <= -30 && isBuyShow == false {
+            //展示
+            adjustHeight(to: 90*width)
+            isBuyShow = true
+        }
+        // 更新最后的偏移量
+        lastContentOffset = currentOffset
+    }
+    // 调整高度方法
+    func adjustHeight(to height: CGFloat) {
+        UIView.animate(withDuration: 0.3) {[weak self] in
+            guard let self = self else {return}
+            musicLaxLabel.isHidden = !(height > (50*width))
+            vipImageView.isHidden = !(height > (50*width))
+            memuBtn.isHidden = !(height > (50*width))
+            var frame = navView.frame
+            frame.size.height = height
+            self.navView.frame = frame
+        }
+    }
     func numberOfSections(in tableView: UITableView) -> Int {
         if MPPositive_BrowseLoadViewModel.shared.libraryList.libraryViewModels.isEmpty {
             return 1