// 生活详情

galaxy/galaxy/Classes/Modules/Home(首页)/Life(生活)/C/YHLifeDetailViewController.swift

@@ -76,6 +76,7 @@ class YHLifeDetailViewController: YHBaseViewController {
     lazy var navBar: YHCustomNavigationBar = {
         let bar = YHCustomNavigationBar.navBar()
         bar.backgroundColor = .clear
+        bar.backButton.setImage(UIImage(named: "back_icon_white"), for: .normal)
         bar.backBlock = {
             [weak self] in
             guard let self = self else { return }
@@ -265,12 +266,28 @@ extension YHLifeDetailViewController: UIScrollViewDelegate {
         if scrollView == self.fakeTableView {
             return
         }
+        
+        var percent = scrollView.contentOffset.y/k_Height_NavigationtBarAndStatuBar
+        if percent < 0.0 {
+            percent = 0.0
+        } else if percent > 1.0 {
+            percent = 1.0
+        }
+        navView.backgroundColor = UIColor(hex: 0xFFFFFF, alpha: percent)
+        
+        if percent >= 0.5 {
+            navBar.backButton.setImage(UIImage(named: "back_icon"), for: .normal)
+            navBar.title = self.productModel.name
+
+        } else {
+            navBar.backButton.setImage(UIImage(named: "back_icon_white"), for: .normal)
+            navBar.title = ""
+        }
+ 
         if scrollView.contentOffset.y >= (self.headerHeight-k_Height_NavigationtBarAndStatuBar-45.0) {
-            navView.backgroundColor = .white
             topSegmentedView.isHidden = false
             topLine.isHidden = false
         } else {
-            navView.backgroundColor = .clear
             topSegmentedView.isHidden = true
             topLine.isHidden = true
         }
@@ -439,6 +456,7 @@ extension YHLifeDetailViewController {
         ossGroup.notify(queue: .main) {
             self.tableView.reloadData()
             self.fakeTableView.reloadData {
+                // 此处是为了计算准确自定义布局的contentSize
                 DispatchQueue.main.asyncAfter(deadline: .now()+0.3, execute: {
                     self.fakeTableView.setContentOffset(.zero, animated: false)
                     if self.imgItems.count > 0 {