// 待完善清单

galaxy/galaxy/Classes/Modules/IntelligentService(服务中心)/FileList(文件清单)/C/YHMyFileListViewController.swift

@@ -16,7 +16,6 @@ import TYSnapshotScroll
 class YHMyFileListViewController: YHBaseViewController {
 
     let topSegmentHeight = 48.0
-    
     var orderId : Int = 0
     var items:[YHFileListModel] = []
     lazy var titles:[String] = []
@@ -51,7 +50,6 @@ class YHMyFileListViewController: YHBaseViewController {
     lazy var tableView: UITableView = {
         let tableView = UITableView(frame: CGRect.zero, style:.grouped)
         tableView.contentInsetAdjustmentBehavior = .never
-        tableView.estimatedSectionHeaderHeight = 1.0
         tableView.showsVerticalScrollIndicator = false
         tableView.backgroundColor = UIColor.init(hex: 0xDCE4F1)
         tableView.separatorStyle = .none
@@ -60,7 +58,21 @@ class YHMyFileListViewController: YHBaseViewController {
         tableView.delegate = self
         tableView.dataSource = self
         tableView.tableHeaderView = self.headerView
-        tableView.isHidden = true
+        return tableView
+    }()
+    
+    lazy var fakeTableView: UITableView = {
+        let tableView = UITableView(frame: CGRect.zero, style:.grouped)
+        tableView.contentInsetAdjustmentBehavior = .never
+        tableView.showsVerticalScrollIndicator = false
+        tableView.backgroundColor = UIColor.init(hex: 0xDCE4F1)
+        tableView.separatorStyle = .none
+        tableView.register(YHMyFileListCell.self, forCellReuseIdentifier: YHMyFileListCell.cellReuseIdentifier)
+        tableView.register(YHMyFileListNoneCell.self, forCellReuseIdentifier: YHMyFileListNoneCell.cellReuseIdentifier)
+        tableView.delegate = self
+        tableView.dataSource = self
+        let view = UIView(frame: self.headerView.frame)
+        tableView.tableHeaderView = view
         return tableView
     }()
     
@@ -170,11 +182,17 @@ class YHMyFileListViewController: YHBaseViewController {
        }
        return view
     }()
+    
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        self.tableView.contentSize = self.fakeTableView.contentSize
+    }
         
     override func viewDidLoad() {
         super.viewDidLoad()
         gk_navigationBar.isHidden = true
         self.view.backgroundColor = UIColor.init(hex: 0xDCE4F1)
+        self.view.addSubview(self.fakeTableView)
         self.view.addSubview(self.tableView)
         self.view.addSubview(self.bottomView)
         self.view.addSubview(self.navStatusBar)
@@ -196,6 +214,11 @@ class YHMyFileListViewController: YHBaseViewController {
             make.left.right.equalToSuperview()
             make.bottom.equalTo(self.bottomView.snp.top)
         }
+        fakeTableView.snp.makeConstraints { make in
+            make.top.equalToSuperview()
+            make.left.right.equalToSuperview()
+            make.bottom.equalTo(self.bottomView.snp.top)
+        }
         bottomView.snp.makeConstraints { make in
             make.left.right.bottom.equalToSuperview()
             make.height.equalTo(k_Height_safeAreaInsetsBottom()+64.0)
@@ -231,22 +254,22 @@ class YHMyFileListViewController: YHBaseViewController {
     
     func scrollToSection(_ section:Int) {
         if 0 <= section && section < self.items.count {
-            self.tableView.scrollToRow(at: IndexPath(row: 0, section: section), at: .top, animated: true)
-            DispatchQueue.main.asyncAfter(deadline: .now() + 0.3, execute: {
+            // 自定义布局contentSize计算不准导致setContentOffset失效故采用此方法
+            // fakeTableView 设计目的 1、每次刷新数据自动滚动到底部才能算完contentSize 2、scrollToRow后更正偏移会有抖动
+            printLog("fakeTableView.contentSize \(self.fakeTableView.contentSize)")
+            self.tableView.contentSize = self.fakeTableView.contentSize
+            
+            self.fakeTableView.scrollToRow(at: IndexPath(row: 0, section: section), at: .top, animated: false)
+            
+            DispatchQueue.main.asyncAfter(deadline: .now() + 0.2, execute: {
                 var gap = 0.0
                 // 此处处理内容总长度不够滚到相应tab的差距
-                let sectionRect = self.tableView.rectForHeader(inSection: section)
-                if self.tableView.contentOffset.y >= 0.0, sectionRect.origin.y > self.tableView.contentOffset.y {
-                    gap = sectionRect.origin.y - self.tableView.contentOffset.y
+                let sectionRect = self.fakeTableView.rectForHeader(inSection: section)
+                if self.fakeTableView.contentOffset.y >= 0.0, sectionRect.origin.y > self.fakeTableView.contentOffset.y {
+                    gap = sectionRect.origin.y - self.fakeTableView.contentOffset.y
                 }
-                let offsetY = self.tableView.contentOffset.y-k_Height_NavigationtBarAndStatuBar-self.topSegmentHeight+gap
-                let maxOffSetY = self.tableView.contentSize.height-self.tableView.frame.size.height
-//                if abs(offsetY) <= maxOffSetY  {
-                    // 此处+2是弥补section结合处偏差与tab显示
-                    self.tableView.setContentOffset(CGPointMake(0, offsetY+4), animated: false)
-//                } else {
-//                    self.tableView.setContentOffset(CGPointMake(0, maxOffSetY-1), animated: false)
-//                }
+                let offsetY = self.fakeTableView.contentOffset.y-k_Height_NavigationtBarAndStatuBar-self.topSegmentHeight+gap
+                self.tableView.setContentOffset(CGPointMake(0, offsetY+4), animated: true)
             })
         }
     }
@@ -377,39 +400,19 @@ extension YHMyFileListViewController : UITableViewDelegate, UITableViewDataSourc
         return 0.01
     }
     
+    
     func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        
+        if scrollView == self.fakeTableView {
+            return
+        }
+        
         printLog("offset: \(scrollView.contentOffset.y)")
         let segmentHeight = self.items.count <= 1 ? 0.0 : 46.0
         let gap = self.consentInsetTop-k_Height_NavigationtBarAndStatuBar-self.topSegmentHeight+segmentHeight
         self.navStatusBar.backgroundColor = scrollView.contentOffset.y > gap ? UIColor.white : UIColor.clear
         self.topSegmentView.backgroundColor = scrollView.contentOffset.y > gap ? UIColor.white : UIColor.clear
         self.topSegmentView.isHidden = scrollView.contentOffset.y < gap
-        
-        // 滚动到哪个section 对应的segment要显示相应的index
-//        if items.count > 0 {
-//            var arr:[Double] = []
-//            for index in 0..<items.count {
-//                let rect = self.tableView.rectForHeader(inSection: index)
-//                let y = rect.origin.y-k_Height_NavigationtBarAndStatuBar-self.topSegmentHeight
-//                arr.append(y)
-//            }
-//                
-//            for (index, offY) in arr.reversed().enumerated() {
-//                if index == arr.count-1 {
-//                    self.topSegmentView.updateSelectIndex(arr.count-index-1)
-//                    self.segmentView.updateSelectIndex(arr.count-index-1)
-//                    break
-//                    
-//                } else {
-//                    if scrollView.contentOffset.y >= offY+2 {
-//                        self.topSegmentView.updateSelectIndex(arr.count-index-1)
-//                        self.segmentView.updateSelectIndex(arr.count-index-1)
-//                        break
-//                    }
-//                }
-//            }
-//        }
-        
         var find:Bool = false
         if items.count > 0 {
             for index in 0..<items.count {
@@ -439,40 +442,34 @@ extension YHMyFileListViewController {
     @objc func clickSaveBtn() {
         
         YHHUD.show(.progress(message: "正在生成图片"))
-        
         self.tableView.snp.remakeConstraints { make in
             make.top.equalToSuperview()
             make.left.right.equalToSuperview()
+            printLog("contentSize 000:\(self.tableView.contentSize.height)")
             make.height.equalTo(self.tableView.contentSize.height)
         }
-        
         let originY = self.tableView.contentOffset.y
-       
-        
-        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, execute: {
-        
-            TYSnapshotScroll.screenSnapshot(self.tableView) {
-                [weak self] image in
-                YHHUD.hide()
-                guard let self = self  else { return }
-                self.tableView.setContentOffset(CGPoint(x: 0, y: originY), animated: false)
-                self.tableView.snp.remakeConstraints { make in
-                    make.top.equalToSuperview()
-                    make.left.right.equalToSuperview()
-                    make.bottom.equalTo(self.bottomView.snp.top)
-                }
+        TYSnapshotScroll.screenSnapshot(self.tableView) {
+            [weak self] image in
+            YHHUD.hide()
+            guard let self = self  else { return }
+            self.tableView.setContentOffset(CGPoint(x: 0, y: originY), animated: false)
+            self.tableView.snp.remakeConstraints { make in
+                make.top.equalToSuperview()
+                make.left.right.equalToSuperview()
+                make.bottom.equalTo(self.bottomView.snp.top)
+            }
+            
+            if let img = image {
+                // 裁剪
+                let targetFrame = CGRectMake(0, k_Height_NavigationtBarAndStatuBar-30, img.size.width, img.size.height-k_Height_NavigationtBarAndStatuBar)
+                let croppedImage = img.cropped(to: targetFrame)
+                self.saveImage(croppedImage)
                 
-                if let img = image {
-                    // 裁剪
-                    let targetFrame = CGRectMake(0, k_Height_NavigationtBarAndStatuBar-30, img.size.width, img.size.height-k_Height_NavigationtBarAndStatuBar)
-                    let croppedImage = img.cropped(to: targetFrame)
-                    self.saveImage(croppedImage)
-                    
-                } else {
-                    YHHUD.flash(message: "生成图片失败")
-                }
+            } else {
+                YHHUD.flash(message: "生成图片失败")
             }
-        })
+        }
     }
 
     func saveImage(_ image: UIImage) {
@@ -513,7 +510,6 @@ extension YHMyFileListViewController {
             self.items.removeAll()
             self.titles.removeAll()
             var isHaveData = false
-            self.tableView.isHidden = true
             if success == true {
                 for (_, item) in self.viewModel.arrFileListData.enumerated() {
                     let arr = item?.supplement_list.filter { (item) -> Bool in
@@ -544,16 +540,15 @@ extension YHMyFileListViewController {
             self.segmentView.isHidden = self.items.count <= 1
             self.headerView.height = self.items.count > 1 ?  self.originHeaderHeight : self.originHeaderHeight-self.topSegmentHeight
             self.tableView.reloadData()
-            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, execute: {
-                if self.items.count > 0 {
-                    let model = self.items[self.items.count-1]
-                    let lastRow = model.supplement_list.count > 0 ? model.supplement_list.count-1 : 0
-                    // 此处因为tableView.contentSize计算不准
-                    self.tableView.scrollToRow(at: IndexPath(row: lastRow, section: self.items.count-1), at: .top, animated: true)
+            self.fakeTableView.tableHeaderView?.height = self.headerView.height
+            self.fakeTableView.reloadData {
+                let lastSection = self.items.count-1
+                if 0 <= lastSection && lastSection < self.items.count {
+                    let model = self.items[lastSection]
+                    let lastRow = model.supplement_list.count-1
+                    self.fakeTableView.scrollToRow(at: IndexPath(row: lastRow, section: lastSection), at: .top, animated: true)
                 }
-                self.tableView.scrollToTop()
-                self.tableView.isHidden = false
-            })
+            }
         }
     }