【发布时间】:2016-07-15 22:51:08
【问题描述】:
我用Table View 和Segmented Control 做了一个应用程序,这是我第一次。我正在使用一些代码和一些教程,但它不起作用。当我运行我的应用程序时它崩溃了,并且在日志中显示了这个错误:
MyApplication[4928:336085] * 由于未捕获的异常“NSUnknownKeyException”而终止应用程序,原因:“[setValue:forUndefinedKey:]:此类与键 tableView 的键值编码不兼容。” * 首先抛出调用栈: ( 0 核心基础 0x000000010516fd85 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x0000000105504deb objc_exception_throw + 48 2 核心基础 0x000000010516f9c9 -[NSException raise] + 9 3 基础 0x000000010364e19b -[NSObject(NSKeyValueCoding) setValue:forKey:] + 288 4 UIKit 0x0000000103c37d0c-[UIViewController setValue:forKey:] + 88 5 UIKit 0x0000000103e6e7fb-[UIRuntimeOutletConnection 连接] + 109 6 核心基础 0x00000001050a9890 -[NSArray makeObjectsPerformSelector:] + 224 7 UIKit 0x0000000103e6d1de-[UINib 实例化WithOwner:选项:] + 1864 8 UIKit 0x0000000103c3e8d6-[UIViewController _loadViewFromNibNamed:bundle:] + 381 9 UIKit 0x0000000103c3f202-[UIViewController loadView] + 178 10 UIKit 0x0000000103c3f560-[UIViewController loadViewIfRequired] + 138 11 UIKit 0x0000000103c3fcd3 -[UIViewController 视图] + 27 12 UIKit 0x000000010440b024-[_UIFullscreenPresentationController _setPresentedViewController:] + 87 13 UIKit 0x0000000103c0f5ca-[UIPresentationController initWithPresentedViewController:presentingViewController:] + 133 14 UIKit 0x0000000103c525bb-[UIViewController _presentViewController:withAnimationController:completion:] + 4002 15 UIKit 0x0000000103c5585c-[UIViewController _performCoordinatedPresentOrDismiss:animated:] + 489 16 UIKit 0x0000000103c5536b-[UIViewController presentViewController:animated:completion:] + 179 17 UIKit 0x00000001041feb8d __67-[UIStoryboardModalSegueTemplate newDefaultPerformHandlerForSegue:]_block_invoke + 243 18 UIKit 0x00000001041ec630-[UIStoryboardSegueTemplate _performWithDestinationViewController:sender:] + 460 19 UIKit 0x00000001041ec433-[UIStoryboardSegueTemplate _perform:] + 82 20 UIKit 0x00000001041ec6f7-[UIStoryboardSegueTemplate 执行:] + 156 21 UIKit 0x0000000103aa6a8d -[UIApplication sendAction:to:from:forEvent:] + 92 22 UIKit 0x0000000103c19e67-[UIControl sendAction:to:forEvent:] + 67 23 UIKit 0x0000000103c1a143-[UIControl_sendActionsForEvents:withEvent:] + 327 24 UIKit 0x0000000103c19263-[UIControl touchesEnded:withEvent:] + 601 25 UIKit 0x0000000103b1999f -[UIWindow_sendTouchesForEvent:] + 835 26 UIKit 0x0000000103b1a6d4 -[UIWindow 发送事件:] + 865 27 UIKit 0x0000000103ac5dc6 -[UIApplication 发送事件:] + 263 28 UIKit 0x0000000103a9f553 _UIApplicationHandleEventQueue + 6660 29 核心基础 0x0000000105095301 _CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION_ + 17 30 核心基础 0x000000010508b22c __CFRunLoopDoSources0 + 556 31 核心基础 0x000000010508a6e3 __CFRunLoopRun + 867 32 核心基础 0x000000010508a0f8 CFRunLoopRunSpecific + 488 33 图形服务 0x000000010726dad2 GSEventRunModal + 161 34 UIKit 0x0000000103aa4f09 UIApplicationMain + 171 35 迪克尔 0x0000000101f26282 主要 + 114 36 libdyld.dylib 0x00000001064c392d 开始 + 1 ) libc++abi.dylib:以 NSException 类型的未捕获异常终止
我使用的代码是:
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
let foodList:[String] = ["Bread", "Meat", "Pizza", "Other"]
let drinkList:[String] = ["Water", "Soda", "Juice", "Other"]
@IBOutlet weak var mySegmentedControl: UISegmentedControl!
@IBOutlet weak var myTableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
var returnValue = 0
switch(mySegmentedControl.selectedSegmentIndex) {
case 0:
returnValue = foodList.count
break
case 1:
returnValue = drinkList.count
break
default:
break
}
return returnValue
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let myCell = tableView.dequeueReusableCellWithIdentifier("myCells", forIndexPath: indexPath)
switch(mySegmentedControl.selectedSegmentIndex) {
case 0:
myCell.textLabel!.text = foodList[indexPath.row]
break
case 1:
myCell.textLabel!.text = drinkList[indexPath.row]
break
default:
break
}
return myCell
}
@IBAction func segmentedControlActionChanged(sender: AnyObject) {
myTableView.reloadData()
}
这里是 main.Storyboard
我检查了很多次代码,但它不起作用。首先我只能使用Table View,观看本教程(https://www.youtube.com/watch?v=ABVLSF3Vqdg)我认为使用Segmented Control 会像教程中一样。但还是不行。相同的代码,相同的错误。
有人可以帮我吗?
【问题讨论】:
-
我遇到了类似的问题。这样做的原因是因为我为我的应用程序制作了两个方案/目标,并且视图控制器仅添加到其中一个方案/目标中,而我正在运行另一个目标/方案。将 Viewcontroller 类添加到所有目标/方案解决了这个问题。
标签: swift uitableview uisegmentedcontrol