ios – EXC_BREAKPOINT UNKNOWN崩溃线“0”

我在Crashlytics报告中遇到了这个奇怪的崩溃,我不知道发生了什么.我甚至不知道行号“0”的含义.有任何想法吗？

来自didSelect方法的代码：

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

    switch indexPath.section {

    case 1:
        let vc = WTShowDetailVC()
        vc.show = bottomFeaturedShows[indexPath.row].show
        navigationController?.pushViewController(vc,animated: true)

    case 2:
        let vc = WTShowDetailVC()
        vc.show = lastWatchedShows[indexPath.row]
        navigationController?.pushViewController(vc,animated: true)

    case 3:
        let vc = WTTapperProfileUserVC()
        vc.tapper = popularTappers[indexPath.row]
        navigationController?.pushViewController(vc,animated: true)

    default:
        println("Something went wrong")
    }
}

解决方法

这通常发生在你打开一个可选项时,它的值是零.尝试对navigationController进行零检查.

if let navigationcontroller: UINavigationController = navigationController { 
    navigationcontroller.pushViewController(vc,animated: true) 
}