How to open google maps app with a dropped pin ? -

问题:

I have this code to open Google Maps App with specific location and it's working but what I need is to drop a pin on that location, is it possible ?

if (UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!)) {

                UIApplication.shared.openURL(URL(string:
                    "comgooglemaps://?center=\(self.location.coordinate.latitude),\(self.location.coordinate.longitude)&zoom=14&views=traffic")!)
            } else {
                print("Can't use comgooglemaps://");
            }

How to to do this ?

回答1:

q: The query string for your search.

It creates a marker in given coordinates. Try this

if (UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!)) {
        UIApplication.shared.open(URL(string:"comgooglemaps://?center=\(self.location.coordinate.latitude),\(self.location.coordinate.longitude)&zoom=14&views=traffic&q=\(self.location.coordinate.latitude),\(self.location.coordinate.longitude)")!, options: [:], completionHandler: nil)
    } else {
        print("Can't use comgooglemaps://")
    }
}

回答2:

First open Info.plist as Source Code (Righ Click on file Info.plis, then select Source Code) and add this:

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>googlechromes</string>
    <string>comgooglemaps</string>
</array>

Next to make it easier to open Google Maps, create function like this one:

func openGoogleMaps() {
    if (UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!)) {
        UIApplication.shared.openURL(URL(string:
            "comgooglemaps://?center=\(myLatitude),\(myLongitude)&zoom=14&views=traffic")!)
    } else {
        print("Can't use comgooglemaps://")
    }
}

Whenever you want to open Google Maps with given coordinate, you just call the function openGoogleMaps().

For more check Maps URLs and Maps SDK for iOS

回答3:

if UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!) {
        UIApplication.shared.open(URL(string: "comgooglemaps://?center=\(self.latitude),\(self.longitude)")!, options: [:], completionHandler: nil)
    } else {
         print("Opening in Apple Map")

    let coordinate = CLLocationCoordinate2DMake(self.latitude, self.longitude)
    let region = MKCoordinateRegionMake(coordinate, MKCoordinateSpanMake(0.01, 0.02))
    let placemark = MKPlacemark(coordinate: coordinate, addressDictionary: nil)
    let mapItem = MKMapItem(placemark: placemark)
    let options = [
        MKLaunchOptionsMapCenterKey: NSValue(mkCoordinate: region.center),
        MKLaunchOptionsMapSpanKey: NSValue(mkCoordinateSpan: region.span)]
    mapItem.name = theLocationName
    mapItem.openInMaps(launchOptions: options)
    }

Use this code for opening in google map if it's installed else open in default apple map.

回答4:

Swift 3 , iOS 10

let lat = 0.0
let lon = 0.0

if UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!) {
    UIApplication.shared.open(URL(string: "comgooglemaps://?center=\(lat),\(lon)&zoom=14&views=traffic&q=loc:\(lat),\(lon)")!, options: [:], completionHandler: nil)
} else {
    print("Can't use comgooglemaps://")
    UIApplication.shared.open(URL(string: "http://maps.google.com/maps?q=loc:\(lat),\(lon)&zoom=14&views=traffic")!, options: [:], completionHandler: nil)
}

回答5:

You can use this:

if (UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!)) {
    UIApplication.shared.openURL(URL(string:"comgooglemaps://?center=\(self.location.coordinate.latitude),\(self.location.coordinate.longitude)&zoom=14&views=traffic&q=\(self.location.coordinate.latitude),\(self.location.coordinate.longitude)")!)
} else {
    print("Can't use comgooglemaps://")
}

回答6:

You should add this line in info.Plist file

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>googlechromes</string>
    <string>comgooglemaps</string>
</array>

code here:

if dicDetails.hasValueForKey("latitude") && dicDetails.hasValueForKey("latitude") {
        if (UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!)) {
            if #available(iOS 10.0, *) {
                UIApplication.shared.open(URL(string:"comgooglemaps://?center=\(dicDetails.stringValueForKey("latitude")),\(dicDetails.stringValueForKey("longitude"))&zoom=14&views=traffic&q=\(dicDetails.stringValueForKey("latitude")),\(dicDetails.stringValueForKey("longitude"))")!, options: convertToUIApplicationOpenExternalURLOptionsKeyDictionary([:]), completionHandler: nil)
            } else {
                // Fallback on earlier versions
                 //https://www.google.com/maps/@
                UIApplication.shared.openURL(URL(string:"https://www.google.com/?q=\(dicDetails.stringValueForKey("latitude")),\(dicDetails.stringValueForKey("longitude")),15z")!)
            }
        } else {
            //print("Can't use comgooglemaps://")
            UIApplication.shared.openURL(URL(string:"https://www.google.com/?q=\(dicDetails.stringValueForKey("latitude")),\(dicDetails.stringValueForKey("longitude")),15z")!)
        }
    }

回答7:

Here is the Swift 5 solution, where you can be sure that the map is shown in the browser if Google Maps app is not installed or in Google Maps app if is installed on the device, both cases with the pin of the location.

 if UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!) {
     UIApplication.shared.open(URL(string:"comgooglemaps://?center=\(latitude),\(longitude)&zoom=14&views=traffic&q=\(latitude),\(longitude)")!, options: [:], completionHandler: nil)
 } else {
     UIApplication.shared.open(URL(string: "http://maps.google.com/maps?q=loc:\(latitude),\(longitude)&zoom=14&views=traffic&q=\(latitude),\(longitude)")!, options: [:], completionHandler: nil)
 }

回答8:

This is much simpler to do in 2019: just use the universal link

URL(string: "https://www.google.com/maps/search/?api=1&query=\(lat),\(lng)")

See the complete documentation at https://developers.google.com/maps/documentation/urls/guide .