ios - 选中时 TabView 崩溃

Question

当我尝试选择“检查”选项卡时，我的应用程序崩溃了 我已链接所有内容 我不确定为什么会收到此错误。有人可以帮忙吗？下面是我的 InspectionViewController 和我的错误代码。

检查VC:

//
//  InspectionVC.swift
//  Chat
//
//  Created by Wiiliam Pettit on 6/2/17.
//  Copyright © 2017 MVI. All rights reserved.
//

import UIKit

class InspectionVC: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {



    @IBOutlet weak var picker: UIPickerView!


    var pickerData: [String] = [String]()

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

        // Connect data:
        self.picker.delegate = self
        self.picker.dataSource = self


        // Input data into the Array:
        pickerData = ["5312", "5387", "53C4", "53W5", "53W8", "5349"]
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.

    }

    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickerData.count
    }

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return pickerData[row]
    }

    // Catpure the picker view selection
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        if(row == 0)
        {
            UIApplication.shared.open(URL(string: "http://mvi.crompco.com/Module_Inspect/perform/22243/230")!)
        }
        else if(row == 1)
        {
            UIApplication.shared.open(URL(string: "http://mvi.crompco.com")!)
        }
        else if(row == 2)
        {
            UIApplication.shared.open(URL(string: "http://mvi.crompco.com")!)
        }
        else if(row == 3)
        {
            UIApplication.shared.open(URL(string: "http://mvi.crompco.com")!)
        }
        else if(row == 4)
        {
            UIApplication.shared.open(URL(string: "http://mvi.crompco.com")!)
        }
        else if(row == 5)
        {
            UIApplication.shared.open(URL(string: "http://mvi.crompco.com")!)
        }
    }



}

错误:

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<QuickChat.InspectionVC 0x7fe83ad275f0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key pickerView.'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010d443b0b __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x000000010c545141 objc_exception_throw + 48
    2   CoreFoundation                      0x000000010d443a59 -[NSException raise] + 9
    3   Foundation                          0x000000010c05ae8b -[NSObject(NSKeyValueCoding) setValue:forKey:] + 292
    4   UIKit                               0x000000010e369644 -[UIViewController setValue:forKey:] + 87
    5   UIKit                               0x000000010e5d66b9 -[UIRuntimeOutletConnection connect] + 109
    6   CoreFoundation                      0x000000010d3e9e8d -[NSArray makeObjectsPerformSelector:] + 269
    7   UIKit                               0x000000010e5d506f -[UINib instantiateWithOwner:options:] + 1856
    8   UIKit                               0x000000010e36fc73 -[UIViewController _loadViewFromNibNamed:bundle:] + 381
    9   UIKit                               0x000000010e370589 -[UIViewController loadView] + 177
    10  UIKit                               0x000000010e3708ba -[UIViewController loadViewIfRequired] + 195
    11  UIKit                               0x000000010e37110a -[UIViewController view] + 27
    12  UIKit                               0x000000010e3cd40b -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 476
    13  UIKit                               0x000000010e3cc89c -[UITabBarController transitionFromViewController:toViewController:] + 59
    14  UIKit                               0x000000010e3c89d6 -[UITabBarController _setSelectedViewController:] + 410
    15  UIKit                               0x000000010e3c87a5 -[UITabBarController setSelectedViewController:] + 109
    16  UIKit                               0x000000010e3cc741 -[UITabBarController _tabBarItemClicked:] + 384
    17  UIKit                               0x000000010e1cfd22 -[UIApplication sendAction:to:from:forEvent:] + 83
    18  UIKit                               0x000000010e5e26f7 -[UITabBar _sendAction:withEvent:] + 566
    19  UIKit                               0x000000010e1cfd22 -[UIApplication sendAction:to:from:forEvent:] + 83
    20  UIKit                               0x000000010e35425c -[UIControl sendAction:to:forEvent:] + 67
    21  UIKit                               0x000000010e354577 -[UIControl _sendActionsForEvents:withEvent:] + 450
    22  UIKit                               0x000000010e5e4db5 -[UITabBar _buttonUp:] + 113
    23  UIKit                               0x000000010e1cfd22 -[UIApplication sendAction:to:from:forEvent:] + 83
    24  UIKit                               0x000000010e35425c -[UIControl sendAction:to:forEvent:] + 67
    25  UIKit                               0x000000010e354577 -[UIControl _sendActionsForEvents:withEvent:] + 450
    26  UIKit                               0x000000010e3534b2 -[UIControl touchesEnded:withEvent:] + 618
    27  UIKit                               0x000000010e23d49a -[UIWindow _sendTouchesForEvent:] + 2707
    28  UIKit                               0x000000010e23ebb0 -[UIWindow sendEvent:] + 4114
    29  UIKit                               0x000000010e1eb7b0 -[UIApplication sendEvent:] + 352
    30  UIKit                               0x000000010e9ceadc __dispatchPreprocessedEventFromEventQueue + 2926
    31  UIKit                               0x000000010e9c6a3a __handleEventQueue + 1122
    32  CoreFoundation                      0x000000010d3e9c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    33  CoreFoundation                      0x000000010d3cf0cf __CFRunLoopDoSources0 + 527
    34  CoreFoundation                      0x000000010d3ce5ff __CFRunLoopRun + 911
    35  CoreFoundation                      0x000000010d3ce016 CFRunLoopRunSpecific + 406
    36  GraphicsServices                    0x000000011156ea24 GSEventRunModal + 62
    37  UIKit                               0x000000010e1ce0d4 UIApplicationMain + 159
    38  QuickChat                           0x000000010a83fba7 main + 55
    39  libdyld.dylib                       0x00000001104ae65d start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

Answer 1

选择器的引用导出设置为“pickerView”而不是“picker”。

1. 转到 Storyboard并在 View Controller 上选择选择器 View 。
2. 在实用程序中选择“显示连接检查器”部分(xcode 的右侧选项卡)。
3. 移除连接到的引用 socket “选择器 View ”。
4. 将引用 socket 添加到“选择器”。