I have to plot multiple pins in a Google Map view, and then zoom to the user's current location. Pins are plotted successfully but not zoomed to current location. Any help would be appreciated
override func viewDidAppear(_ animated: Bool) {
if (self.googleMapsView == nil) {
self.googleMapsView = GMSMapView(frame: self.mapViewContainer.frame)
self.view.addSubview(self.googleMapsView)
print(AppDelegate.getAppDelegate().mapArray)
googleMapsView.clear()
for i in 0...AppDelegate.getAppDelegate().mapArray.count - 1 {
let lon = Double ((AppDelegate.getAppDelegate().mapArray[i]["lon"] as? String)!)
let lat = Double ((AppDelegate.getAppDelegate().mapArray[i]["lat"] as? String)!)
let tit = AppDelegate.getAppDelegate().mapArray[i]["location"] as? String
locateWithLongitude(lon: lon!,andLatitude: lat! ,andTitle: tit!)
}
let marker = GMSMarker(position: AppDelegate.getAppDelegate().myLocation)
let camera = GMSCameraPosition.camera(withLatitude: AppDelegate.getAppDelegate().myLocation.latitude, longitude: AppDelegate.getAppDelegate().myLocation.longitude, zoom: 11)
self.googleMapsView.camera = camera
marker.title = AppDelegate.getAppDelegate().sublocality
marker.map = self.googleMapsView
self.googleMapsView.animate(to: camera)
}
}
func locateWithLongitude(lon: Double, andLatitude lat: Double, andTitle title: String) {
DispatchQueue.main.async() { () -> Void in
let position = CLLocationCoordinate2DMake(lat, lon)
let marker = GMSMarker(position: position)
let camera = GMSCameraPosition.camera(withLatitude: lat, longitude: lon, zoom: 0)
self.googleMapsView.camera = camera
marker.title = title
marker.map = self.googleMapsView
}
}
Your zoom is set to 0, increase it to 15/16 like bellow.
let camera = GMSCameraPosition.camera(withLatitude: lat, longitude: lon, zoom: 16)
Related
I am using google maps in my application wherein I have to draw the polyline parallel along with the animation marker.Both should move simultaneous.,
Right now, my solution works like this ., First polyline is drawn with new coordinates, then animation marker is moved after.
I have tried few links in the stack overflow.. wherein the solution wasn't there.
This is the solution i'm looking for in swift iOS... the below link is for android.. which works perfectly
How to move marker along polyline using google map
Thanks if you can help me out in these..`
#objc func pocDrawPolyline() {
if poclastShownIndex < (vehicleLocationArray.count) {
let dict = vehicleLocationArray[poclastShownIndex]
if let lati = dict["latitude"], let logi = dict["longitude"] {
let lat = Double(lati as! String)
let log = Double(logi as! String)
let location = dict["location"] as? String
pocCreateVehicleMarkerWith(address: location ?? "School Bus", latitude: lat!, and: log!)
pocPath.add(CLLocationCoordinate2DMake(lat!, log!))
}
polyline.path = pocPath
polyline.strokeWidth = 3.0
polyline.strokeColor = UIColor.red
polyline.map = googleMapView
poclastShownIndex += 1
} else {
//No update from "NOW" API call
}
}
func pocCreateVehicleMarkerWith(address: String, latitude: Double, and Longitude: Double) {
// Creates a marker for Vehicle.
if vechicleMarker.map == nil {
vechicleMarker.position = CLLocationCoordinate2D(latitude: latitude, longitude: Longitude)
vechicleMarker.title = address
vechicleMarker.icon = UIImage(named: "bus1")
vechicleMarker.map = googleMapView
} else {
CATransaction.begin()
CATransaction.setAnimationDuration(0.5)
vechicleMarker.position = CLLocationCoordinate2D(latitude: latitude, longitude: Longitude)
vechicleMarker.title = address
vechicleMarker.icon = UIImage(named: "bus1")
CATransaction.commit()
if poclastShownIndex > 0 {
if let oldLatitude = vehicleLocationArray[poclastShownIndex-1]["latitude"],
let oldLongitude = vehicleLocationArray[poclastShownIndex-1]["longitude"],
let newLatitude = vehicleLocationArray[poclastShownIndex]["latitude"],
let newLongitude = vehicleLocationArray[poclastShownIndex]["longitude"] {
let oldLat = Double(oldLatitude as! String)
let oldLon = Double(oldLongitude as! String)
let newLat = Double(newLatitude as! String)
let newLon = Double(newLongitude as! String)
let oldloc = CLLocationCoordinate2D(latitude: oldLat!, longitude: oldLon!)
let newloc = CLLocationCoordinate2D(latitude: newLat!, longitude: newLon!)
let distanceInMeters = distance(from: oldloc, to: newloc)
if distanceInMeters > 0 {
print("Rotation Degree ------ \(CLLocationDegrees(getHeadingForDirection(fromCoordinate: oldloc, toCoordinate: newloc)))")
vechicleMarker.groundAnchor = CGPoint(x: CGFloat(0.5), y: CGFloat(0.5))
vechicleMarker.rotation = CLLocationDegrees(getHeadingForDirection(fromCoordinate: oldloc, toCoordinate: newloc))
googleMapView.animate(toLocation: newloc)
}
}
}
}
}func timerMethod() {
pocTimer = Timer.scheduledTimer(timeInterval: 10.0, target: self, selector: #selector(pocDrawPolyline), userInfo: nil, repeats: true)
}`
I am building an application where I have to move multiple marker. These markers will be visible at my end according to the multiple user's live locations. I am able to update only a single marker. but the rest are not updating. I stored these data in firebase and I am getting their data from there.
override func viewDidLoad() {
super.viewDidLoad()
Database.database().reference().child("users").observe(.childChanged, with: { (snapshot) in
if let dictionary = snapshot.value as? [String: AnyObject]
{
self.hideHUD()
self.latitudeFloatValue = (dictionary["lat"] as! Double)
self.longitudeFloatValue = (dictionary["long"] as! Double)
self.moveMent.delegate = self
//set old coordinate
self.oldCoordinate = CLLocationCoordinate2DMake(self.latitudeFloatValue, self.longitudeFloatValue)
print(self.oldCoordinate)
// Create a GMSCameraPosition that tells the map to display the marker
let camera = GMSCameraPosition.camera(withLatitude: self.latitudeFloatValue, longitude: self.longitudeFloatValue , zoom: 14)
self.mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
self.mapView.isMyLocationEnabled = true
self.mapView.delegate = self
self.view = self.mapView
// Creates a marker in the center of the map.
self.driverMarker = GMSMarker()
self.driverMarker.position = self.oldCoordinate!
self.driverMarker.icon = UIImage(named: "car")
self.driverMarker.map = self.mapView
self.copyCordinates = self.cordinates
print(self.copyCordinates)
print(self.cordinates)
self.cordinates = ["lattitude":self.latitudeFloatValue,"longitude":self.longitudeFloatValue]
print("self.cordinates",self.cordinates)
print(self.oldCordinates)
print(self.newCordinates)
if(self.oldCordinates["lattitude"] == nil)
{
self.oldCordinates = self.cordinates
self.newCordinates = self.cordinates
}
self.newCordinates = self.cordinates
self.oldCordinates = self.copyCordinates
print("oldCordinates",self.oldCordinates)
print("newCordinates",self.newCordinates)
self.movinfMarker()
}
}, withCancel: nil)
//for use in background
self.locman.requestAlwaysAuthorization()
locman.requestWhenInUseAuthorization()
if (CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedWhenInUse || CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedAlways){
guard let currentLocation = locman.location else {
return
}
stringLatitude = currentLocation.coordinate.latitude
stringLongitude = currentLocation.coordinate.longitude
print(currentLocation.coordinate.latitude)
print(currentLocation.coordinate.longitude)
}
// Create a GMSCameraPosition that tells the map to display the marker
let camera = GMSCameraPosition.camera(withLatitude: stringLatitude, longitude: stringLongitude , zoom: 7)
self.mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
self.mapView.isMyLocationEnabled = true
self.mapView.delegate = self
self.view = self.mapView
Database.database().reference().child("users").observe(.childAdded, with: { (snapshot) in
if let dictionary = snapshot.value as? [String: AnyObject]
{
self.latitudeFloatValue = (dictionary["lat"] as! Double)
self.longitudeFloatValue = (dictionary["long"] as! Double)
self.titleMarker = (dictionary["username"] as! String)
self.uuidValue = (dictionary["uuid"] as! String)
self.states = [
State(name: self.titleMarker, uuid: self.uuidValue, long: self.longitudeFloatValue, lat: self.latitudeFloatValue),
]
}
for state in self.states {
// Creates a marker in the center of the map.
let state_marker = GMSMarker()
state_marker.position = CLLocationCoordinate2D(latitude: state.lat, longitude: state.long)
state_marker.icon = UIImage(named: "car")
state_marker.title = state.name
state_marker.userData = state.uuid//zIndex = Int32(state.uuid)!
state_marker.snippet = "Hey, this is \(state.name)"
state_marker.map = self.mapView
self.markerDict[state.name] = state_marker
}
}, withCancel: nil)
}
func movinfMarker(){
driverMarker.map = nil
let oldCoodinate: CLLocationCoordinate2D? = CLLocationCoordinate2D(latitude: self.oldCordinates["lattitude"] ?? 0.0 , longitude: self.oldCordinates["longitude"] ?? 0.0)
let newCoodinate: CLLocationCoordinate2D? = CLLocationCoordinate2D(latitude: self.newCordinates["lattitude"] ?? 0.0 , longitude: self.newCordinates["longitude"] ?? 0.0)
print("oldCordinatesNewWala",oldCoodinate as Any)
print("newCordinatesNewWala",newCoodinate as Any)
driverMarker.icon = UIImage(named: "car")
mapView.camera = GMSCameraPosition.camera(withTarget: newCoodinate!, zoom: 17)
driverMarker.groundAnchor = CGPoint(x: CGFloat(0.5), y: CGFloat(0.5))
driverMarker.position = oldCoodinate ?? CLLocationCoordinate2D(latitude: 0.0,longitude: 0.0)
//this can be old position to make car movement to new position
driverMarker.map = mapView
//marker movement animation
CATransaction.begin()
CATransaction.setValue(Int(2.0), forKey: kCATransactionAnimationDuration)
CATransaction.setCompletionBlock({() -> Void in
self.driverMarker.groundAnchor = CGPoint(x: CGFloat(0.5), y: CGFloat(0.5))
//New bearing value from backend after car movement is done
})
driverMarker.position = newCoodinate ?? CLLocationCoordinate2D(latitude: 0.0,longitude: 0.0)
//this can be new position after car moved from old position to new position with animation
driverMarker.map = mapView
driverMarker.groundAnchor = CGPoint(x: CGFloat(0.5), y: CGFloat(0.5))
//found bearing value by calculation
CATransaction.commit()
}
I am building an ios application that uses a google map to display the location of the places return in the server. I manage to display the result in the initial load of the map, but when I want to search new plaaces and reload the markers in the map. Unfortunately the app was crashes.
Hope for your help.
Thank you.
Here is my code in the ViewController to initially display the markers:
func setUpMap() {
let camera = GMSCameraPosition.camera(withLatitude: -33.86, longitude: 151.20, zoom: 10.0)
self.mapView.camera = camera
let map_view = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
for data in arrData {
let long = data["LONGITUDE"].string!
let lat = data["LATITUDE"].string!
if long != "" || lat != "" {
let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude: CLLocationDegrees(lat)!, longitude: CLLocationDegrees(long)!)
marker.title = ""
marker.snippet = "Hey, this is sample"
marker.icon = UIImage(named: "locator")
marker.map = self.mapView
bounds = bounds.includingCoordinate(marker.position)
}
}
// fit to bounds
mapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 50.0))
self.mapView = map_view
}
Here is my code to reload/reset the markers in the map.
func reloadMarkers() {
self.mapView.clear()
let camera = GMSCameraPosition.camera(withLatitude: -33.86, longitude: 151.20, zoom: 10.0)
self.mapView.camera = camera
let map_view = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
var _bounds = GMSCoordinateBounds()
for data in arrData {
let long = data["LONGITUDE"].string!
let lat = data["LATITUDE"].string!
if long != "" || lat != "" {
let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude: CLLocationDegrees(lat)!, longitude: CLLocationDegrees(long)!)
marker.title = ""
marker.snippet = "Hey, this is sample"
marker.icon = UIImage(named: "locator")
marker.map = self.mapView
_bounds = _bounds.includingCoordinate(marker.position)
}
}
// fit to bounds
mapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 50.0))
self.mapView = map_view
}
Thanks for the help.
Cheers!
I found a solution, please see sample code below.
func reloadMarkers() {
let camera = GMSCameraPosition.camera(withLatitude: 12.0377995, longitude: 122.6408281, zoom: 10.0)
let map_view = GMSMapView.map(withFrame: self.brachMapView.bounds, camera: camera)
map_view.camera = camera
var bounds = GMSCoordinateBounds()
for data in arrData {
let long = data["LONGITUDE"].string!
let lat = data["LATITUDE"].string!
if long != "" || lat != "" {
let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude: CLLocationDegrees(lat)!, longitude: CLLocationDegrees(long)!)
marker.title = ""
marker.snippet = "Hey, this is sample"
marker.icon = UIImage(named: "locator")
marker.map = map_view
bounds = bounds.includingCoordinate(marker.position)
}
}
// fit to bounds
map_view.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 50.0))
self.brachMapView.addSubview(map_view)
}
Thanks.
Cheers
I'm using Google PlacePicker API in my iOS application using Swift 3.0.
I need 13 digits of precision after the decimal. But Google PlacePicker is returning latitude and longitude with 7 digits after the decimal.
Below is my function:
func pickPlace(sender: UIButton) {
let center = CLLocationCoordinate2D(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)
let northEast = CLLocationCoordinate2D(latitude: center.latitude + 0.001, longitude: center.longitude + 0.001)
let southWest = CLLocationCoordinate2D(latitude: center.latitude - 0.001, longitude: center.longitude - 0.001)
let viewport = GMSCoordinateBounds(coordinate: northEast, coordinate: southWest)
let config = GMSPlacePickerConfig(viewport: viewport)
let placePicker = GMSPlacePicker(config: config)
placePicker.pickPlace(callback: {(place, error) -> Void in
if let error = error {
print("Pick Place error: \(error.localizedDescription)")
return
}
if let place = place {
let coordinates = CLLocationCoordinate2DMake(place.coordinate.latitude, place.coordinate.longitude)
let marker = GMSMarker(position: coordinates)
marker.title = place.name
marker.map = self.googleMapView
self.googleMapView.animate(toLocation: coordinates)
let geoCode = "\(place.coordinate.latitude),\(place.coordinate.longitude)"
self.showGeoSelector(title: "Selected Coordinates", message: "Latitude: " + String(place.coordinate.latitude) + " Longitude: " + String(place.coordinate.longitude), geoCode: geoCode, geoLat: String(place.coordinate.latitude), geoLong: String(place.coordinate.longitude))
}
})
}
Try this code:
let geoCode = "\(String(format: "%.18f", place.coordinate.latitude)),\(String(format: "%.18f", place.coordinate.longitude))"
Hope its helps :)
I am a newbie in Swift. I was ale to get 2 markers on Google Maps:
import UIKit
import GoogleMaps
class ViewController: UIViewController {
// You don't need to modify the default init(nibName:bundle:) method.
override func loadView() {
let camera = GMSCameraPosition.cameraWithLatitude(37.0902, longitude: -95.7129, zoom: 3.0)
let mapView = GMSMapView.mapWithFrame(CGRect.zero, camera: camera)
mapView.myLocationEnabled = true
view = mapView
let state_marker = GMSMarker()
state_marker.position = CLLocationCoordinate2D(latitude: 61.370716, longitude: -152.404419)
state_marker.title = "Alaska"
state_marker.snippet = "Hey, this is Alaska"
state_marker.map = mapView
let state_marker1 = GMSMarker()
state_marker1.position = CLLocationCoordinate2D(latitude: 32.806671, longitude: -86.791130)
state_marker1.title = "Alabama"
state_marker1.snippet = "Hey, this is Alabama"
state_marker1.map = mapView
}
}
I need to add 51 more markers to different latitude and longitude for each state with different title and snippet.
I can probably just copy this block 51 times but is there a way to optimize this code?
You should create a struct like this:
struct State {
let name: String
let long: CLLocationDegrees
let lat: CLLocationDegrees
}
Then create an array of this struct in your VC:
let states = [
State(name: "Alaska", long: -152.404419, lat: 61.370716),
State(name: "Alabama", long: -86.791130, lat: 32.806671),
// the other 51 states here...
]
Now you can just loop through the array, adding markers in each iteration:
for state in states {
let state_marker = GMSMarker()
state_marker.position = CLLocationCoordinate2D(latitude: state.lat, longitude: state.long)
state_marker.title = state.name
state_marker.snippet = "Hey, this is \(state.name)"
state_marker.map = mapView
}
You might also want to add a dictionary that stores the names of the states as keys and the corresponding GMSMarker as value. This way, you can modify the markers later.
var markerDict: [String: GMSMarker] = [:]
override func loadView() {
for state in states {
let state_marker = GMSMarker()
state_marker.position = CLLocationCoordinate2D(latitude: state.lat, longitude: state.long)
state_marker.title = state.name
state_marker.snippet = "Hey, this is \(state.name)"
state_marker.map = mapView
markerDict[state.name] = state_marker
}
}