在 MKMapView 上尝试多个注释时出现 SIGABRT 错误

Question

我一直在使用 MKMapView 并在地图上放置注释图钉。我正在努力在地图上为 30 个不同位置放置 30 个图钉，并确保在添加每个附加位置后运行 iPhone SDK。然后，不知怎的，它开始崩溃并给我带来了可怕的“SIGABRT”。 AG！！

我知道这可能是我的语法中的一个小错误，但由于我刚刚复制并粘贴了以前有效的代码，所以我不知所措。我正在考虑使用 MKCooperativeRegionMake 让一切变得更加简洁（我读到这可能是一个选项），但我已经输入了 10 个商店之类的东西，所以需要很多时间来切换它，这是我不想要的如果这是一个快速修复的话。

我继续取出除一个坐标之外的所有坐标，结果成功了。然后我又添加了一个，它工作了，等等。出于某种原因，它工作了很多次，但有时它会锁定并崩溃。我认为这只是特定位置存在问题，但似乎从来都不是任何特定位置的语法问题。所以现在我对造成这种情况的原因感到茫然。

我想这可能是分配和释放的问题，我做得不对？我试图在代码期间“释放”某些分配的空间，但问题仍然存在。我也尝试在代码期间不释放分配的空间来做到这一点，同样的问题。

这是我正在使用的代码（所有代码有时都有效，因此我已在 MillersLocations 文件中正确设置了标题、副标题和坐标）：

MapViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];

    //Miller's Neighborhood Market #56
    MKCoordinateRegion store56;
    store56.center.latitude = 36.8605679;
    store56.center.longitude = -76.2866713;
    store56.span.latitudeDelta = 0.1;
    store56.span.longitudeDelta = 0.1;
    [mapView setRegion:store56 animated:YES];

    MillersLocations *ann56 = [[MillersLocations alloc]init];
    ann56.title = @"Store #56";
    ann56.subtitle = @"Come check us out!";
    ann56.coordinate = store56.center;
    [mapView addAnnotation:ann56];
    [MillersLocations release];
    //Not sure if release should be on this syntax


    //Miller's Neighborhood Market #66
    MKCoordinateRegion store66;
    store66.center.latitude = 37.0942970;
    store66.center.longitude = -76.4584890;
    store66.span.latitudeDelta = 0.1;
    store66.span.longitudeDelta = 0.1;
    [mapView setRegion:store66 animated:YES]; 

    MillersLocations *ann66 = [[MillersLocations alloc]init];
    ann66.title = @"Store #66";
    ann66.subtitle = @"Come check us out!";
    ann66.coordinate = store66.center;
    [mapView addAnnotation:ann66];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #21
    MKCoordinateRegion store21;
    store21.center.latitude = 37.0385289;
    store21.center.longitude = -76.4004810;
    store21.span.latitudeDelta = 0.1;
    store21.span.longitudeDelta = 0.1;
    [mapView setRegion:store21 animated:YES];    

    MillersLocations *ann21 = [[MillersLocations alloc]init];
    ann21.title = @"Store #21";
    ann21.subtitle = @"Come check us out!";
    ann21.coordinate = store21.center;
    [mapView addAnnotation:ann21];
    [MillersLocations release];
    //Not sure if release should be on this syntax


    //Miller's Neighborhood Market #67
    MKCoordinateRegion store67;
    store67.center.latitude = 37.6823690;
    store67.center.longitude = -77.5898330;
    store67.span.latitudeDelta = 0.1;
    store67.span.longitudeDelta = 0.1;
    [mapView setRegion:store67 animated:YES];

    MillersLocations *ann67 = [[MillersLocations alloc]init];
    ann67.title = @"Store 67";
    ann67.subtitle = @"Come check us out";
    ann67.coordinate = store67.center;
    [mapView addAnnotation:ann67];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #49
    MKCoordinateRegion store49;
    store49.center.latitude = 36.8550990;
    store49.center.longitude = -76.1355950;
    store49.span.latitudeDelta = 0.1;
    store49.span.latitudeDelta = 0.1;
    [mapView setRegion:store49 animated:YES];

    MillersLocations *ann49 = [[MillersLocations alloc]init];
    ann49.title = @"Store 49";
    ann49.subtitle = @"Come check us out";
    ann49.coordinate = store49.center;
    [mapView addAnnotation:ann49];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #82
    MKCoordinateRegion store82;
    store82.center.latitude = 36.7848840;
    store82.center.longitude = -76.1587459;
    store82.span.latitudeDelta = 0.1;
    store82.span.latitudeDelta = 0.1;
    [mapView setRegion:store82 animated:YES];

    MillersLocations *ann82 = [[MillersLocations alloc]init];
    ann82.title = @"Store 82";
    ann82.subtitle = @"Come check us out";
    ann82.coordinate = store82.center;
    [mapView addAnnotation:ann82];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #40
    MKCoordinateRegion store40;
    store40.center.latitude = 37.1236680;
    store40.center.longitude = -76.5093960;
    store40.span.latitudeDelta = 0.1;
    store40.span.latitudeDelta = 0.1;
    [mapView setRegion:store40 animated:YES];

    MillersLocations *ann40 = [[MillersLocations alloc]init];
    ann40.title = @"Store 40";
    ann40.subtitle = @"Come check us out";
    ann40.coordinate = store40.center;
    [mapView addAnnotation:ann40];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #55
    MKCoordinateRegion store55;
    store55.center.latitude = 36.7704630;
    store55.center.longitude = -76.6058140;
    store55.span.latitudeDelta = 0.1;
    store55.span.latitudeDelta = 0.1;
    [mapView setRegion:store55 animated:YES];

    MillersLocations *ann55 = [[MillersLocations alloc]init];
    ann55.title = @"Store 55";
    ann55.subtitle = @"Come check us out";
    ann55.coordinate = store55.center;
    [mapView addAnnotation:ann55];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #58
    MKCoordinateRegion store58;
    store58.center.latitude = 36.7818390;
    store58.center.longitude = -76.0479090;
    store58.span.latitudeDelta = 0.1;
    store58.span.latitudeDelta = 0.1;
    [mapView setRegion:store58 animated:YES];

    MillersLocations *ann58 = [[MillersLocations alloc]init];
    ann58.title = @"Store 58";
    ann58.subtitle = @"Come check us out";
    ann58.coordinate = store58.center;
    [mapView addAnnotation:ann58];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #57
    MKCoordinateRegion store57;
    store57.center.latitude = 36.8216160;
    store57.center.longitude = -76.4246680;
    store57.span.latitudeDelta = 0.1;
    store57.span.latitudeDelta = 0.1;
    [mapView setRegion:store57 animated:YES];

    MillersLocations *ann57 = [[MillersLocations alloc]init];
    ann57.title = @"Store 57";
    ann57.subtitle = @"Come check us out";
    ann57.coordinate = store57.center;
    [mapView addAnnotation:ann57];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //Miller's Neighborhood Market #90
    MKCoordinateRegion store90;
    store90.center.latitude = 38.1330690;
    store90.center.longitude = -77.5124230;
    store90.span.latitudeDelta = 0.1;
    store90.span.latitudeDelta = 0.1;
    [mapView setRegion:store90 animated:YES];

    MillersLocations *ann90 = [[MillersLocations alloc]init];
    ann90.title = @"Store 90";
    ann90.subtitle = @"Come check us out";
    ann90.coordinate = store90.center;
    [mapView addAnnotation:ann90];
    [MillersLocations release];
    //Not sure if release should be on this syntax

    //56,66,21,67,49,90,82,40,55,58,57

}

错误（线程 1：程序收到信号“SIGABRT”。 ）总是在线上发生：

[mapView setRegion:store57animated:YES];

或者在 store90 上也可以。还有其他商店也发生过这种情况，但总是在那条线上。我没有确定任何押韵或理由。

感谢任何可以提供帮助的人！如果我有点啰嗦，请道歉，我只是想确保我包含了您需要帮助的任何信息。

编辑

一旦我正确地合成了我创建的 MKMapView Outlet，然后获得了释放它的代码（“[mapView release];”），它就起作用了。我假设 MapViews 释放自己，这可能是错误的原因。

它工作得很好，然后我去添加另一个注释，它又崩溃了。当我删除新注释时它会起作用，因此当我添加更多注释时会出现问题。股份公司。任何帮助表示赞赏。谢谢。

Answer 1

SIGABRT 的最可能原因是 store49 的区域无效，导致 NSInvalidArgumentException 和 SIGABRT。

对于 store49（以及之后的所有商店），未设置 longitudeDelta。
仅设置了latitudeDelta（两次）。

将重复的 latitudeDelta 设置修复为 longitudeDelta。

另一个问题是：

[MillersLocations release];

这会尝试调用 MillersLocation 类上的 release，而不是您正在创建的该类的实例。所有这些行都应该更改为类似以下内容：

[ann56 release];

此外，您不需要每次都创建一个区域来设置注释。例如，您可以这样做：

MillersLocations *ann56 = [[MillersLocations alloc]init];
ann56.title = @"Store #56";
ann56.subtitle = @"Come check us out!";
ann56.coordinate = CLLocationCoordinate2DMake(36.8605679, -76.2866713);
[mapView addAnnotation:ann56];
[ann56 release];

添加所有注释后，您可以创建一个包含所有注释的区域（如果这是您想要的），或者仅显示最后一个注释，然后调用 setRegion一次在最后。

此外，您可能希望将存储存储在 plist 中并循环遍历 plist 以创建注释，而不是在代码中单独创建它们。

最后，您不应该删除 [mapView release]; （来自 dealloc），即使它是 IBOutlet。