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我正在尝试计算我的应用程序中的expectedTravelTime,但与GoogleMaps相比,我获得了不同的值。我从MKRoute得到了错误的expectedTravelTime
这里是我的代码:
NSArray *startLocationArray = [startLocation componentsSeparatedByString:@","];
NSArray *destinationArray = [destination componentsSeparatedByString:@","];
MKPlacemark *placemarkStartLocation = [[MKPlacemark alloc] initWithCoordinate:CLLocationCoordinate2DMake([startLocationArray[0] intValue],
[startLocationArray[1] intValue]) addressDictionary:nil];
MKMapItem *mapItemStartLocation = [[MKMapItem alloc] initWithPlacemark:placemarkStartLocation];
MKPlacemark *placemarkDestination = [[MKPlacemark alloc] initWithCoordinate:CLLocationCoordinate2DMake([destinationArray[0] intValue],
[destinationArray[1] intValue]) addressDictionary:nil];
MKMapItem *mapItemDestination = [[MKMapItem alloc] initWithPlacemark:placemarkDestination];
MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init];
[request setSource:mapItemStartLocation];
[request setDestination:mapItemDestination];
[request setTransportType:MKDirectionsTransportTypeAutomobile];
[request setRequestsAlternateRoutes:NO];
MKDirections *directions = [[MKDirections alloc] initWithRequest:request];
__block MKRoute *route;
[directions calculateDirectionsWithCompletionHandler:
^(MKDirectionsResponse *response, NSError *error)
{
if (! error && [response routes] > 0)
{
route = [[response routes] objectAtIndex:0];
double exceedingTime = fmod(route.expectedTravelTime, 60);
eta = (route.expectedTravelTime - exceedingTime)/60;
int iEta = (int)eta;
lblEta.text = [NSString stringWithFormat:@"%im", iEta, nil];
}
}];
startLocation和目标传递的方法外,他们的价值观是:
startLocation = 37.776402,-122.408470
destination = 37.831287,-122.485519
我得到:
route.distance = 1513 (meters)
route.expectedTravelTime = 491 (should be seconds, so finally 8 minutes)
,但是,谷歌地图我获得了超过30分钟的预计旅程时间和超过9英里的 距离
我哪里错了?