Question

我试图获得两点之间的路线，以获得两点之间的步行距离。但我总是得到以下错误：

错误：

/SourceCache/ProtocolBuffer/ProtocolBuffer-225/Runtime/PBRequester.m:799 server (https://gsp-ssl.ls.apple.com/directions.arpc) returned error: 400
2015-08-12 16:19:34.354 projectName[2995:597568] RESPONSE: (null)

这是我的代码：

-(void)viewDidLoad{
    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];


    MKPlacemark *spot1 = [[MKPlacemark alloc] initWithCoordinate:CLLocationCoordinate2DMake(51.21299581976029, 4.404984000000013) addressDictionary:nil];
    MKPlacemark *spot2 = [[MKPlacemark alloc] initWithCoordinate:CLLocationCoordinate2DMake(51.20173651985178, 4.450245532177766) addressDictionary:nil];


    MKMapItem * startItem = [[MKMapItem alloc] initWithPlacemark:spot1];
    MKMapItem * destinationItem = [[MKMapItem alloc] initWithPlacemark:spot2];

    NSLog(@"START: %@",startItem);
    NSLog(@"DESTINATION: %@",destinationItem);

    MKDirectionsRequest * directionsRequest = [[MKDirectionsRequest alloc] init];
    [directionsRequest setSource:startItem];
    [directionsRequest setSource:destinationItem];
    [directionsRequest setTransportType:MKDirectionsTransportTypeWalking];
    MKDirections *direction = [[MKDirections alloc] initWithRequest:directionsRequest];

    [direction calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) {

        NSLog(@"RESPONSE: %@",response);

    }];
}

我测试了不同的互联网连接，以确保这不是问题。我还按照Apple's Documentation的所有步骤来配置我的应用程序以接受路线请求，但没有任何帮助。

Answer 1

[directionsRequest setSource:destinationItem];应为[directionsRequest setDestination:destinationItem];

您正在设置源两次（或者更确切地说，用第二个值覆盖第一个值）。然后你要求没有目的地的路线，当然现在有办法计算，所以你得到一个错误。

为什么我不能获得MKDirectionResponse

1 个答案: