如何使用我的ios应用程序中的指示打开Apple地图应用程序

Question

我的目的是从ios应用程序打开地图应用程序和方向，我能够打开地图应用程序，但它没有显示方向，我已编写如下代码

 NSString *mystr=[[NSString alloc] initWithFormat:@"http://maps.apple.com/maps?saddr=Current+Location&daddr=Newyork"];
            NSURL *myurl=[[NSURL alloc] initWithString:mystr];
            [[UIApplication sharedApplication] openURL:myurl];

任何人都可以帮我解释如何将参数传递给这个网址和其他任何一个？

Answer 1

CLLocationCoordinate2D coordinate =    CLLocationCoordinate2DMake(self.location.latitude,self.location.longitude);

//create MKMapItem out of coordinates
MKPlacemark* placeMark = [[MKPlacemark alloc] initWithCoordinate:coordinate addressDictionary:nil];
MKMapItem* destination =  [[MKMapItem alloc] initWithPlacemark:placeMark];
if([destination respondsToSelector:@selector(openInMapsWithLaunchOptions:)])
{
    //using iOS6 native maps app
    if(_mode == 1)
    {
        [destination openInMapsWithLaunchOptions:@{MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeWalking}];

    }
    if(_mode == 2)
    {
        [destination openInMapsWithLaunchOptions:@{MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving}];

    }
    if(_mode == 3)
    {
        [destination openInMapsWithLaunchOptions:@{MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeTransit}];

    }

} else{

    //using iOS 5 which has the Google Maps application
    NSString* url = [NSString stringWithFormat: @"http://maps.google.com/maps?saddr=Current+Location&daddr=%f,%f", self.location.latitude, self.location.longitude];
    [[UIApplication sharedApplication] openURL: [NSURL URLWithString: url]];
}

Answer 2

如果您的意思是根据两点将用户带到地图应用程序，那么您可以这样做：

创建一个如下所示的NSURL：

NSURL *URL = [NSURL URLWithString:@"http://maps.google.com/maps?saddr=%f,%f&daddr=%f,%f"];

您可以适当地插入起始地址和目的地（lat。和long。）。 告诉您的应用程序打开URL

[[UIApplication sharedApplication] openURL:URL];

它应该自动带你到地图应用程序！