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    你的位置：在路上 > 工作和技术 > OS_Platform > MobilePlatform > iOS > 【已解决】iOS11中UITableView显示不出来

    【已解决】iOS11中UITableView显示不出来

    iOS crifan 2821浏览 0评论

    代码中，对于UITableView，已经通过autolayout设置了frame的约束条件

    也设置了datasource和viewdelegate的代理

    class NewsDetailViewController: UIViewController, UITableViewDelegate,UITableViewDataSource {
        let attachFileListTableView:UITableView
        init(singleNews: SingleNews) {
            attachFileListTableView = UITableView()
            scrollView.addSubview(attachFileListTableView)
            constrain(self.dateNameLabel, self.attachFileListTableView) { (dateNameLabel, attachFileListTableView) in
                attachFileListTableView.top == dateNameLabel.bottom + 25
                attachFileListTableView.left == attachFileListTableView.superview!.left
                attachFileListTableView.right == attachFileListTableView.superview!.right
                //attachFileListTableView.bottom == attachFileListTableView.superview!.bottom
                attachFileListTableView.height == ScreenHeight – 10 – 20 – 13 – 25
            }
            scrollView.backgroundColor = UIColor.white//UIColor(hexString: “#E6E6E6”)
            //for debug
            self.scrollView.backgroundColor = UIColor.blue
            self.attachFileListTableView.backgroundColor = UIColor.yellow
            scrollView.isScrollEnabled = true
        }
        override func viewDidLoad() {
            self.attachFileListTableView.delegate = self
            self.attachFileListTableView.dataSource = self
            updateNewsInfo()
    }
        override func viewWillAppear(_ animated: Bool) {
            super.viewWillAppear(animated)
            getDetailNewsInfo()
        }
        /***************************************************************************
         * UITableViewDataSource Functions
         ***************************************************************************/
        func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
            let attachFileCount = self.singleNews.filesInfo.count
            return attachFileCount
        }
        
        func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            var curFileItemCell = FileTableViewCell(reuseIdentifier: FileTableViewCellId)
            if(indexPath.row < self.singleNews.filesInfo.count) {
                let curFileItem = self.singleNews.filesInfo[indexPath.row]
                curFileItemCell = FileTableViewCell(
                    reuseIdentifier: FileTableViewCellId,
                    fileName: curFileItem.name,
                    fileType: curFileItem.type
                )
            }
            return curFileItemCell
        }
        
        func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
            let cellHeight:CGFloat = UITableViewAutomaticDimension
            return cellHeight
        }
        
        /***************************************************************************
         * UITableViewDelegate functions
         ***************************************************************************/
        func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
            gLog.debug(“indexPath=\(indexPath)”)
            if(indexPath.row < self.singleNews.filesInfo.count) {
                let curFileItem = self.singleNews.filesInfo[indexPath.row]
                let fileId = curFileItem.id
                if let downloadFileUrl = NSURL(string: ServerApi.getDownloadFileUrl(id: fileId))  {
                    UIApplication.shared.openURL(downloadFileUrl as URL)
                }
            }
        }
        
        //get detail news info, include attachment file list
        func getDetailNewsInfo(){
            self.pleaseWait()
            
            getUrlRespJson_async(
                httpMethod: .get,
                url:  ServerApi.getNoticeInfoUrl(noticeId: singleNews.id),
                parameters: nil,
                //respJsonHandle: { [weak self] (response) in
                respJsonHandle: { (response) in
                    self.clearAllNotice()
                    if response.isSuccess {
                        let singleNewsJson = response.successValue
                        gLog.debug(“singleNewsJson=\(singleNewsJson)”)
                        self.singleNews = SingleNews(fromJson: singleNewsJson)
                        self.updateNewsInfo()
                    } else if response.isFailure {
                        self.noticeInfo(response.failedMessage)
                    }
            })
        }
        
        func updateNewsInfo(){
            dispatchMain_async {
                self.titleLabel.text = self.singleNews.title
                self.subtitleLabel.text = self.singleNews.subtitle
                if let publishDate = self.singleNews.publishDate, let publisherName = self.singleNews.publisherName {
                    self.dateNameLabel.text = “\(publishDate) 发布人：\(publisherName)”
                }
                self.attachFileListTableView.reloadData()
            }
        }

    但是tableview显示不出来：

    以为是没有给tableview设置高度，所以去改为：

                attachFileListTableView.height == ScreenHeight – 10 – 20 – 13 – 25

    问题依旧。

    关键是：

    cellForRowAt

    heightForRowAt

    都没有执行到。

    此处确保numberOfRowsInSection返回不是空，是6了。

    ios 11 uitableview now show

    ios 11 uitableview changes

    ios 11 uitableview now display

    Apple releases iOS 11 developer beta 9 and public beta 8 | 9to5Mac

    swift – iOS 11 UITableView bug – Stack Overflow

    去把相关的attachFileListTableView的代码，布局的代码等，

    从init换到viewDidLoad

    结果问题依旧。

    改为：

    //        attachFileListTableView = UITableView()

            attachFileListTableView = UITableView(frame: CGRect.zero)

    结果：问题依旧。

    加上frame的定义：

            attachFileListTableView.frame = CGRect(x: 0, y:90 , width: ScreenWidth, height: 44 * 6)

    结果：问题依旧。

    难道是：

    scrollView中不能加入UITableView？

    ios11 uitableview scrollview

    ios11 uitableview UIscrollview

    uitableview inside uiscrollview

    iphone – How to use UITableView inside UIScrollView and receive a cell click? – Stack Overflow

    就不应该把UITableView放到UIScrollView中

    ios – I want a UITableView inside of a UIScrollView to extend to the bottom of the UIScrollView and not get cut off by initial screen – Stack Overflow

    objective c – Scrolling a UITableView inside a UIScrollView – Stack Overflow

    【总结】

    所以此处之所以UITableView不显示，不是iOS11中有何变化，而是之前就知道的：

    UITableVIew是继承自UIScrollView，所以官网不允许UITableVIew嵌套在UIScrollView里面，否则会出现各种奇怪的问题。

    所以此处去掉UIScrollView

    import UIKit
    import Cartography
    //let NewsBackgoudColor = UIColor(hexString: “#E6E6E6”)!
    let NewsBackgoudColor = UIColor.white
    //class NewsDetailViewController: UIViewController, NJKWebViewProgressDelegate, UIWebViewDelegate {
    class NewsDetailViewController: UIViewController, UITableViewDelegate,UITableViewDataSource {
        var singleNews: SingleNews
        
        let titleLabel: UILabel
        let dateNameLabel: UILabel
        let subtitleLabel: UILabel
        
    //    let newsWebView: UIWebView
    //    var progressProxy: NJKWebViewProgress
    //    var progressView: NJKWebViewProgressView
        
        let attachFileListTableView:UITableView
    //    var scrollView = UIScrollView()
        
        init(singleNews: SingleNews) {
            self.singleNews = singleNews
            
            titleLabel = UILabel()
            dateNameLabel = UILabel()
            subtitleLabel = UILabel()
    //        newsWebView = UIWebView()
    //        progressProxy = NJKWebViewProgress()
    //        progressView = NJKWebViewProgressView()
            
            attachFileListTableView = UITableView()
            
            super.init(nibName: nil, bundle: nil)
        }
        
        required init?(coder aDecoder: NSCoder) {
            fatalError(“init(coder:) has not been implemented”)
        }
        
        override func viewDidLoad() {
            super.viewDidLoad()
            
            self.navigationItem.title = “政策通知详情”
            self.view.backgroundColor = NewsBackgoudColor
            
    //        scrollView.frame = CGRect(x: 0, y: 10, width: ScreenWidth, height: ScreenHeight – 10)
    //        scrollView.backgroundColor = UIColor.white//UIColor(hexString: “#E6E6E6”)
    //        scrollView.isScrollEnabled = true
    //        self.view.addSubview(scrollView)
            titleLabel.frame = CGRect(x: 0, y: 10, width: ScreenWidth, height: 20)
            subtitleLabel.frame = CGRect(x: 0, y: 40, width: ScreenWidth, height: 16)
            dateNameLabel.frame = CGRect(x: 0, y: 66, width: ScreenWidth, height: 16)
            //        newsWebView.frame = CGRect(x: 0, y:90 , width: ScreenWidth, height: ScreenHeight – 90)
    //        scrollView.addSubview(titleLabel)
    //        scrollView.addSubview(subtitleLabel)
    //        scrollView.addSubview(dateNameLabel)
    //        //        scrollView.addSubview(newsWebView)
    //        scrollView.addSubview(attachFileListTableView)
            self.view.addSubview(titleLabel)
            self.view.addSubview(subtitleLabel)
            self.view.addSubview(dateNameLabel)
            self.view.addSubview(attachFileListTableView)
            
            constrain(self.dateNameLabel, self.attachFileListTableView) { (dateNameLabel, attachFileListTableView) in
                attachFileListTableView.top == dateNameLabel.bottom + 25
                attachFileListTableView.left == attachFileListTableView.superview!.left
                attachFileListTableView.right == attachFileListTableView.superview!.right
                attachFileListTableView.bottom == attachFileListTableView.superview!.bottom
            }
            titleLabel.textColor = UIColor(hexString: “#333333”)
            titleLabel.textAlignment = .center
            titleLabel.font = UIFont.systemFont(ofSize: 16)
            titleLabel.numberOfLines = 2
            
            subtitleLabel.textColor = UIColor(hexString: “#333333”)
            subtitleLabel.textAlignment = .center
            subtitleLabel.font = UIFont.systemFont(ofSize: 14)
            
            dateNameLabel.textColor = UIColor(hexString: “#333333”)
            dateNameLabel.textAlignment = .center
            dateNameLabel.font = UIFont.systemFont(ofSize: 13)
            
            //newsWebView.scrollView.bounces = false
            //        newsWebView.backgroundColor = UIColor.red
            //newsWebView.scrollView.isScrollEnabled = false
            
            //        newsWebView.delegate = progressProxy;
            //        progressProxy.webViewProxyDelegate = self
            //        progressProxy.progressDelegate = self
            //
            //        progressView.progressBarView.backgroundColor = UIColor(hexString: “#FFD200”)
            
            self.attachFileListTableView.delegate = self
            self.attachFileListTableView.dataSource = self
            self.attachFileListTableView.tableFooterView = UIView()
            self.attachFileListTableView.backgroundColor = self.view.backgroundColor
            
    //        let progressBarHeight: CGFloat = 2
    //        let navigationBarBounds = SingletonRootNC().navigationBar.bounds
    //        let barFrame = CGRect(x: 0, y: navigationBarBounds.size.height – progressBarHeight, width: navigationBarBounds.size.width, height: progressBarHeight)
    //        progressView = NJKWebViewProgressView(frame: barFrame)
    //        progressView.autoresizingMask = [.flexibleWidth, .flexibleTopMargin]
            
    //        setupControls()
            updateNewsInfo()
        }
        
        override func viewWillAppear(_ animated: Bool) {
            super.viewWillAppear(animated)
            
    //        SingletonRootNC().navigationBar.addSubview(progressView)
            getDetailNewsInfo()
        }
        
        override func viewWillDisappear(_ animated: Bool) {
            super.viewWillDisappear(animated)
            
    //        progressView.removeFromSuperview()
        }
        
        /***************************************************************************
         * UITableViewDataSource Functions
         ***************************************************************************/
        func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
            let attachFileCount = self.singleNews.filesInfo.count
            return attachFileCount
        }
        
        func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            var curFileItemCell = FileTableViewCell(reuseIdentifier: FileTableViewCellId)
            if(indexPath.row < self.singleNews.filesInfo.count) {
                let curFileItem = self.singleNews.filesInfo[indexPath.row]
                curFileItemCell = FileTableViewCell(
                    reuseIdentifier: FileTableViewCellId,
                    fileName: curFileItem.name,
                    fileType: curFileItem.type,
                    backgroundColor: NewsBackgoudColor
                )
            }
            return curFileItemCell
        }
        
        func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    //        let cellHeight:CGFloat = UITableViewAutomaticDimension
    //        return cellHeight
            return FileTableViewCellHeight
        }
        
        /***************************************************************************
         * UITableViewDelegate functions
         ***************************************************************************/
        func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
            gLog.debug(“indexPath=\(indexPath)”)
            if(indexPath.row < self.singleNews.filesInfo.count) {
                let curFileItem = self.singleNews.filesInfo[indexPath.row]
                let fileId = curFileItem.id
                if let downloadFileUrl = NSURL(string: ServerApi.getDownloadFileUrl(id: fileId))  {
                    UIApplication.shared.openURL(downloadFileUrl as URL)
                }
            }
        }
        
        //get detail news info, include attachment file list
        func getDetailNewsInfo(){
            self.pleaseWait()
            
            getUrlRespJson_async(
                httpMethod: .get,
                url:  ServerApi.getNoticeInfoUrl(noticeId: singleNews.id),
                parameters: nil,
                //respJsonHandle: { [weak self] (response) in
                respJsonHandle: { (response) in
                    self.clearAllNotice()
                    if response.isSuccess {
                        let singleNewsJson = response.successValue
                        gLog.debug(“singleNewsJson=\(singleNewsJson)”)
                        self.singleNews = SingleNews(fromJson: singleNewsJson)
                        self.updateNewsInfo()
                    } else if response.isFailure {
                        self.noticeInfo(response.failedMessage)
                    }
            })
        }
        
        func updateNewsInfo(){
            dispatchMain_async {
                self.titleLabel.text = self.singleNews.title
                self.subtitleLabel.text = self.singleNews.subtitle
                if let publishDate = self.singleNews.publishDate, let publisherName = self.singleNews.publisherName {
                    self.dateNameLabel.text = “\(publishDate) 发布人：\(publisherName)”
                }
                self.attachFileListTableView.reloadData()
            }
        }
    }

    然后就可以了：

    转载请注明：在路上 » 【已解决】iOS11中UITableView显示不出来

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