致命錯誤：意外地發現零而展開的可選值Mapkit

Question

類的ViewController：UIViewController的{

@IBOutlet var Map: MKMapView! 


    override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 

    let location = CLLocationCoordinate2DMake(41.7, 2.1667) 

    let span = MKCoordinateSpanMake(0.2, 0.2) 
    let region = MKCoordinateRegion(center: location, span: span) 

Map.setRegion(region, animated: true) 



let annotation = MKPointAnnotation() 

annotation.coordinate=(location) 

    annotation.title = "Sant Feliu de Codines" 

    Map.addAnnotation(annotation) 

出現的錯誤是：線程1：EXC_BAD_INTRUCTION（代碼= EXC_1386_INVOP，子碼=爲0x0）

libswiftCore.dylib`function signature specialization <Arg[0] = Exploded, Arg[1] = Exploded, Arg[2] = Dead, Arg[3] = Dead> of Swift._fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.UInt) ->(): 
0x2a2d0c <+0>: push {r4, r5, r6, r7, lr} 
0x2a2d10 <+4>: add r7, sp, #12 
0x2a2d14 <+8>: push {r8, r10, r11} 
0x2a2d18 <+12>: sub sp, sp, #40 
0x2a2d1c <+16>: bfc sp, #0, #3 
0x2a2d20 <+20>: mov r11, r3 
0x2a2d24 <+24>: mov r6, r0 
0x2a2d28 <+28>: ldr r0, [r7, #0xc] 
0x2a2d2c <+32>: ldr r3, [r7, #0x8] 
0x2a2d30 <+36>: tst r2, #1 
0x2a2d34 <+40>: bne 0x2a2d58     ; <+76> 
0x2a2d38 <+44>: cmp r1, #0 
0x2a2d3c <+48>: blt 0x2a2d80     ; <+116> 
0x2a2d40 <+52>: str r0, [sp] 
0x2a2d44 <+56>: add r1, r6, r1 
0x2a2d48 <+60>: mov r0, r6 
0x2a2d4c <+64>: mov r2, r11 
0x2a2d50 <+68>: bl  0x2e7088 
; function signature specialization <Arg[0] = Exploded, Arg[1] = Exploded> of Swift.(_fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.UInt) ->()).(closure #2) 

- > 0x2a2d54 < +72>：陷阱

感謝您的幫助！

Answer 1

好一件事，你需要改變的是：

annotation.coordinate=(location) 

到：

annotation.coordinate = location 

否則，請確認您的IBOutlet中正確掛接和你在Interface Builder中沒有其他錯誤。