个人中心
gpt4 book ai didi

ios - 应用程序启动时出现 NSUnknownKeyException

转载 作者：行者123 更新时间：2023-11-28 08:53:43 25 4
gpt4 key购买 nike

<分区>

程序启动然后抛出一个错误，它把我带到 appDelegate.swift 文件 --class AppDelegate: UIResponder, UIApplicationDelegate { -- thread 1:signal sigabort

代码如下:

import UIKit

class ViewController: UIViewController {

    let filemgr = NSFileManager.defaultManager()
    let dirPaths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)

    @IBOutlet weak var address: UITextField!
    @IBOutlet weak var street: UITextField!
    @IBOutlet weak var city: UITextField!
    @IBOutlet weak var state: UITextField!
    @IBOutlet weak var zip: UITextField!

    @IBOutlet weak var status: UILabel!

    var database = NSString()  // <-- CRASHING HERE

    override func viewDidLoad() {
        super.viewDidLoad()

        let docsDir = dirPaths[0]
        let databasePath = docsDir.stringByAppendingString("/contacts.db") // This seems to work

        if !filemgr.fileExistsAtPath(databasePath as String) {
            let contactDB = FMDatabase(path: databasePath as String)

            if contactDB == nil {
                print("Error DB")
            }
            if contactDB.open() {
                let sql = "CREATE TABLE IF NOT EXISTS Houses (ID INTEGER PRIMARY KEY AUTOINCREMENT, Address TEXT, Street TEXT, City TEXT, State TEXT, Zip TEXT)"
                if !contactDB.executeStatements(sql) {
                    print("Error DB")
                }
                else {
                    print("Error DB")
                }
            }
        }
    }
    @IBAction func saveData(sender: AnyObject) {
        let docsDir = dirPaths[0]
        let databasePath = docsDir.stringByAppendingString("/contacts.db") // This seems to work

        if !filemgr.fileExistsAtPath(databasePath as String) {
            let contactDB = FMDatabase(path: databasePath as String)
            if contactDB.open() {
                let sql = "insert into Houses (Address, State, City, State, Zip) values ('\(address),\(street),\(city),\(state),\(zip))"

                let result = contactDB.executeUpdate(sql, withArgumentsInArray: nil)

                if !result {
                    status.text = "Failed to add house"
                    print("DB Error")
                }
                else {
                    status.text = "Added House"
                    address.text = ""
                    street.text = ""
                    city.text = ""
                    state.text = ""
                    zip.text = ""
                }
            }
            else {
                print("DB Error")
            }
        }
    }
    @IBAction func findContact(sender: AnyObject) {
        let docsDir = dirPaths[0]
        let databasePath = docsDir.stringByAppendingString("/contacts.db")

        if !filemgr.fileExistsAtPath(databasePath as String) {
            let contactDB = FMDatabase(path: databasePath as String)
            if contactDB.open() {
                let sql = "SELECT address, street, state, state, zip WHERE ID = 1" // Change this later
                let results:FMResultSet? = contactDB.executeQuery(sql,withArgumentsInArray: nil)

                if results?.next() == true {
                    address.text = results?.stringForColumn("Address")
                    street.text = results?.stringForColumn("Street")
                    city.text = results?.stringForColumn("City")
                    state.text = results?.stringForColumn("State")
                    zip.text = results?.stringForColumn("Zip")
                }
                else {
                    status.text = "Record not found"
                    address.text = ""
                    street.text = ""
                    city.text = ""
                    state.text = ""
                    zip.text = ""
                }
                contactDB.close()
            }
            else {
                print("DBError")
            }
        }
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

错误如下:

2015-11-10 00:34:33.385 SQLiteDatabaseExample[3656:218507] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key name.'*** First throw call stack:(    0   CoreFoundation                      0x0000000106aa8f45 __exceptionPreprocess + 165    1   libobjc.A.dylib                     0x0000000106522deb objc_exception_throw + 48    2   CoreFoundation                      0x0000000106aa8b89 -[NSException raise] + 9    3   Foundation                          0x000000010488fa6b -[NSObject(NSKeyValueCoding) setValue:forKey:] + 288    4   UIKit                               0x0000000104e6e04c -[UIViewController setValue:forKey:] + 88    5   UIKit                               0x000000010509ba71 -[UIRuntimeOutletConnection connect] + 109    6   CoreFoundation                      0x00000001069e9a80 -[NSArray makeObjectsPerformSelector:] + 224    7   UIKit                               0x000000010509a454 -[UINib instantiateWithOwner:options:] + 1864    8   UIKit                               0x0000000104e74c16 -[UIViewController _loadViewFromNibNamed:bundle:] + 381    9   UIKit                               0x0000000104e75542 -[UIViewController loadView] + 178    10  UIKit                               0x0000000104e758a0 -[UIViewController loadViewIfRequired] + 138    11  UIKit                               0x0000000104e76013 -[UIViewController view] + 27    12  UIKit                               0x0000000104d4f51c -[UIWindow addRootViewControllerViewIfPossible] + 61    13  UIKit                               0x0000000104d4fc05 -[UIWindow _setHidden:forced:] + 282    14  UIKit                               0x0000000104d614a5 -[UIWindow makeKeyAndVisible] + 42    15  UIKit                               0x0000000104cdb396 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4131    16  UIKit                               0x0000000104ce19c3 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1750    17  UIKit                               0x0000000104cdeba3 -[UIApplication workspaceDidEndTransaction:] + 188    18  FrontBoardServices                  0x0000000108776784 -[FBSSerialQueue _performNext] + 192    19  FrontBoardServices                  0x0000000108776af2 -[FBSSerialQueue _performNextFromRunLoopSource] + 45    20  CoreFoundation                      0x00000001069d5011 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17    21  CoreFoundation                      0x00000001069caf3c __CFRunLoopDoSources0 + 556    22  CoreFoundation                      0x00000001069ca3f3 __CFRunLoopRun + 867    23  CoreFoundation                      0x00000001069c9e08 CFRunLoopRunSpecific + 488    24  UIKit                               0x0000000104cde4f5 -[UIApplication _run] + 402    25  UIKit                               0x0000000104ce330d UIApplicationMain + 171    26  SQLiteDatabaseExample               0x00000001047a05ad main + 109    27  libdyld.dylib                       0x000000010824f92d start + 1    28  ???                                 0x0000000000000001 0x0 + 1)libc++abi.dylib: terminating with uncaught exception of type NSException(lldb)

25 4 0
文章推荐： css - 淡入不适用于 IE
文章推荐： javascript - 母版页中的 SharePoint 2013 链接 JS
文章推荐： ios - 如何将两个 .xib 文件添加到两个不同的部分
文章推荐： ios - 如何从后台任务添加和重绘 CALayer？
行者123
个人简介

我是一名优秀的程序员,十分优秀！

滴滴打车优惠券免费领取
滴滴打车优惠券
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com