iPhone SDK 6使用语音导航方向启动地图 [英] iPhone SDK 6 Launching maps with voice navigation directions

问题描述

我正在尝试从我的iPhone SDK应用启动地图应用。现在我可以启动带有路线的地图应用程序，但它会转到方向概览，不会使用Siri和语音导航来提供转弯路线。

I am trying to launch the maps app from my iPhone SDK app. Right now I can launch the maps app with directions but it goes to an overview of the directions and doesn't use Siri and the voice navigation to give turn by turn directions.

目前我有一个启动此代码的按钮...

currently I have a button that launches this code...

NSString *address = viewedObject.addressFull;
NSString *url = [NSString stringWithFormat: @"http://maps.apple.com/maps?saddr=%f,%f&daddr=%@", here.latitude, here.longitude, [address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

推荐答案

使用iOS 6，有一种新方法可以启动地图，在 MKMapItem 中使用 openMapsWithItems：。这是我使用的一个片段，提供从当前位置到提供的坐标的步行或行车路线：

With iOS 6 there's a new way to launch maps, using openMapsWithItems: in MKMapItem. Here's a snippet that I use that provides walking or driving directions from current location to the provided coordinates:

// iOS 6.0+ only
MKPlacemark* destPlace = [[[MKPlacemark alloc] initWithCoordinate:coordinate addressDictionary:nil] autorelease];
MKMapItem* destMapItem = [[[MKMapItem alloc] initWithPlacemark:destPlace] autorelease]; destMapItem.name = stationItem.title;

NSArray* mapItems = [[[NSArray alloc] initWithObjects: destMapItem, nil] autorelease];
NSDictionary* options = [NSDictionary dictionaryWithObjectsAndKeys:
                                 walking ? MKLaunchOptionsDirectionsModeWalking : MKLaunchOptionsDirectionsModeDriving,
                                 MKLaunchOptionsDirectionsModeKey, nil];
[MKMapItem openMapsWithItems:mapItems launchOptions:options];

你正在这样做的方式，如果在iOS 6之前的设备上运行，你仍然需要这样做，您需要在URL中包含 dirflg 以请求步行或行车路线：

The way you are doing it, which you still have to do if running on pre-iOS 6 devices, you need to include the dirflg in the URL to request walking or driving directions:

// pre iOS 6 code
NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps?saddr=%f,%f&daddr=%f,%f&dirflg=%c",
    currentLocation.coordinate.latitude,
    currentLocation.coordinate.longitude,
    destination.coordinate.latitude,
    destination.coordinate.longitude,
    walking ? 'w' : 'd'];

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