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我正在嘗試計算我的應用程序中的expectedTravelTime,但與GoogleMaps相比,我獲得了不同的值。我從MKRoute得到了錯誤的expectedTravelTime
這裏是我的代碼:
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和目標傳遞的方法外,他們的價值觀是:
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,谷歌地圖我獲得了超過30分鐘的預計旅程時間和超過9英里的 距離
我哪裏錯了?