Question

我有以下课程：

    import UIKit

    class HeaderTableViewController: UITableViewController {

    var nonDefaultTitle : String?

    var data: [String: [String]] = [:]

    var headers : [String]       = []
    var bodys   : [[String]]     = []

    init(displayData: [String: [String]]) {
        super.init(style: .Grouped)
        data = displayData

        for key in data.keys {
            headers.append(key)
        }

        for arr in data.values {
            bodys.append(arr)
        }
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    private override init(nibName nibNameOrNil: String!, bundle nibBundleOrNil: NSBundle!) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        tableView.backgroundColor = UIColor.whiteColor()

        tableView.registerNib(UINib(nibName: "DefaultCustomCell", bundle: nil), forCellReuseIdentifier: "DefaultCustomCell")

        tableView.rowHeight = UITableViewAutomaticDimension
        tableView.estimatedRowHeight = 50

        tableView.sectionHeaderHeight = UITableViewAutomaticDimension;
        tableView.estimatedSectionHeaderHeight = 100;

        let nib = UINib(nibName: "HeaderTableHeaderView", bundle: nil)
        tableView.registerNib(nib, forHeaderFooterViewReuseIdentifier: "HeaderTableHeaderView")

        if let ttle = nonDefaultTitle {
            self.title = ttle
        }
        else {
            self.title = "Talking Tips"
        }
    }
}

//
// MARK: Helpers
//
extension HeaderTableViewController {
    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return headers.count
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        let body = bodys[section] as [String]

        return body.count
    }

    override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
        let cell = self.tableView.dequeueReusableHeaderFooterViewWithIdentifier("HeaderTableHeaderView")
        let header = cell as? HeaderTableHeaderView
        header!.titleLabel.text = headers[section]

        return cell
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("DefaultCustomCell", forIndexPath: indexPath) as! DefaultCustomCell

        cell.titleLabel.text = bodys[indexPath.section][indexPath.row]
        cell.selectionStyle = .None
        return cell
    }

    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { }
}



//
// MARK: The table headers
//
class HeaderTableHeaderView: UITableViewHeaderFooterView {
    @IBOutlet weak var titleLabel: UILabel!
}

//
// MARK: Class that handles the HeaderTableLargeHeaderView (sorry for the terrible naming conventions)
//
class HeaderTableLargeHeaderView: UIView {

    // Our title label with autolayout constraints
    @IBOutlet weak var titleLabel: UILabel!

    // Convience method to load for xib
    class func instanceFromNib() -> UIView {
        return UINib(nibName: "HeaderTableLargeHeaderView", bundle: nil).instantiateWithOwner(nil, options: nil)[0] as! UIView
    }

    override func layoutSubviews() {
        super.layoutSubviews()
    }
}

非常直接。如果我使用Diawi通过Xcode或AdHoc安装，它运行正常。

但是，如果我通过TestFlight或通过AppStore安装，它每次都会崩溃....我在这里做错了吗？我的设备日志给了我这个：

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
Triggered by Thread:  0

Filtered syslog:
None found

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   UIKit                           0x0000000196387a4c __66-[UISectionRowData refreshWithSection:tableView:tableViewRowData:]_block_invoke + 424
1   UIKit                           0x00000001963879f0 __66-[UISectionRowData refreshWithSection:tableView:tableViewRowData:]_block_invoke + 332
2   UIKit                           0x0000000196347368 -[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 2712
3   UIKit                           0x00000001963467e4 -[UITableViewRowData rectForFooterInSection:heightCanBeGuessed:] + 536
4   UIKit                           0x0000000196346570 -[UITableViewRowData heightForTable] + 60
5   UIKit                           0x00000001963463a4 -[UITableView _updateContentSize] + 220
6   UIKit                           0x000000019634c918 -[UITableView setContentInset:] + 252
7   UIKit                           0x0000000196320438 -[UIViewController _setNavigationControllerContentInsetAdjustment:] + 428
8   UIKit                           0x000000019632017c -[UINavigationController _computeAndApplyScrollContentInsetDeltaForViewController:] + 464
9   UIKit                           0x0000000196322214 -[UINavigationController _layoutViewController:] + 160
10  UIKit                           0x0000000196322094 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 416
11  UIKit                           0x0000000196408a58 -[UINavigationController _startCustomTransition:] + 2076
12  UIKit                           0x0000000196320d74 -[UINavigationController _startDeferredTransitionIfNeeded:] + 676
13  UIKit                           0x00000001963209dc -[UINavigationController __viewWillLayoutSubviews] + 64
14  UIKit                           0x0000000196320940 -[UILayoutContainerView layoutSubviews] + 188
15  UIKit                           0x0000000196265738 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1196
16  QuartzCore                      0x000000019372e40c -[CALayer layoutSublayers] + 148
17  QuartzCore                      0x00000001937230e8 CA::Layer::layout_if_needed(CA::Transaction*) + 292
18  QuartzCore                      0x0000000193722fa8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
19  QuartzCore                      0x000000019369fc64 CA::Context::commit_transaction(CA::Transaction*) + 252
20  QuartzCore                      0x00000001936c70d0 CA::Transaction::commit() + 512
21  UIKit                           0x000000019625ae08 _afterCACommitHandler + 324
22  CoreFoundation                  0x00000001903cd7dc __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
23  CoreFoundation                  0x00000001903cb40c __CFRunLoopDoObservers + 372
24  CoreFoundation                  0x00000001903cb89c __CFRunLoopRun + 1024
25  CoreFoundation                  0x00000001902fa048 CFRunLoopRunSpecific + 444
26  GraphicsServices                0x0000000191d7d198 GSEventRunModal + 180
27  UIKit                           0x00000001962d3818 -[UIApplication _run] + 684
28  UIKit                           0x00000001962ce550 UIApplicationMain + 208
29  Care Com                        0x00000001000db12c 0x1000b4000 + 160044
30  libdyld.dylib                   0x000000018f2dc5b8 start + 4

所以我已经能够通过将我的运行方案从调试切换到发布来追踪问题。这是崩溃的错误：

malloc: *** mach_vm_map(size=8589934592) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug

所以我找到了我认为的解决方案但是我不确定它为什么会起作用。我在这一行上得到了上述错误：

bodys[section].count

如果我转过来：

Optimization Level: Fast, Single-File Optimization [-0]

到

Optimization Level: None [-Onone]

所以当通过Xcode和TestFlight安装时，上述修复工作正常，但是当从应用程序商店下载时崩溃...仍然打开并寻找修复程序。

我尝试将init方法更改为：

init(displayData: [String: [String]]) {
    super.init(style: .Grouped)

    //data = displayData

    // I get a bad access error thrown when trying to access displayData
    print(displayData)

    for key in displayData.keys {
        headers.append(key)
    }

    for arr in displayData.values {
        bodys.append(arr)
    }
}

并重新启用优化，在尝试使用init参数时会给我EXC_BAD_ACCESS。

我还运行了没有优化的仪器来检查泄漏和内存分配，这就是我得到的。这是通过TestFlight和Xcode正常运行的版本，但在通过AppStore安装时崩溃。红色箭头是我推到生产中崩溃的视图时。

内存分配：

泄漏：

以下是我实例化和推送视图的方式：

func testPush() {
    let data = createTestData()

    let tableHeaderVC = HeaderTableViewController(displayData: data as! [String : [String]])
    self.navigationController?.pushViewController(tableHeaderVC, animated: true)
}

func createTestData() -> [String : [String]] {
    let firstSection  = ["Row one", "Row two"]
    let secondSection = ["Row one", "Row two"]

    return ["First" : firstSection, "Second" : secondSection]
}

此外，在看了这个问题后，我想也许这是一个自定义初始化程序的问题。所以我删除了它并在推送之前设置了变量...在优化时仍然得到相同的错误。

类在生产中崩溃而不是调试

0 个答案: