如何在iOS中的两个位置之间获得路线？
我想要使用Google API在两个CLLocationCoordinates之间绘制路线。 目前我正在使用“ https://maps.googleapis.com/maps/api/directions/json ？” 与起源和目的地，这不完全是我想要做的。 我想通过我的位置，而不是位置名称，然后制定一个路线。
提前致谢。
我遵循这个教程的谷歌地图SDK。 而在该教程的路线用户必须将两个位置名称添加到alertView 。 但是我对代码做了一些修改，所以你可以直接从使用的当前位置到input的目标位置。
首先从observeValueForKeyPath方法中得到用户当前位置的位置名称：
var currentLocationName = String() override func observeValueForKeyPath(keyPath: String, ofObject object: AnyObject, change: [NSObject : AnyObject], context: UnsafeMutablePointer<Void>) { if !didFindMyLocation { let myLocation: CLLocation = change[NSKeyValueChangeNewKey] as! CLLocation let geoCoder = CLGeocoder() let location = CLLocation(latitude: myLocation.coordinate.latitude, longitude: myLocation.coordinate.longitude) geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in let placeArray = placemarks as? [CLPlacemark] // Place details var placeMark: CLPlacemark! placeMark = placeArray?[0] // Address dictionary println(placeMark.addressDictionary) // Location name if let locationName = placeMark.addressDictionary["Name"] as? NSString { println(locationName) } // Street address if let street = placeMark.addressDictionary["Thoroughfare"] as? NSString { println(street) } // City if let city = placeMark.addressDictionary["City"] as? NSString { //get city name. self.currentLocationName = city as String println(city) } // Zip code if let zip = placeMark.addressDictionary["ZIP"] as? NSString { println(zip) } // Country if let country = placeMark.addressDictionary["Country"] as? NSString { println(country) } }) viewMap.camera = GMSCameraPosition.cameraWithTarget(myLocation.coordinate, zoom: 10.0) viewMap.settings.myLocationButton = true didFindMyLocation = true } }
现在在createRoute方法中给出这个城市的名字或者你想要的东西是这样的：
@IBAction func createRoute(sender: AnyObject) { let addressAlert = UIAlertController(title: "Create Route", message: "Connect locations with a route:", preferredStyle: UIAlertControllerStyle.Alert) addressAlert.addTextFieldWithConfigurationHandler { (textField) -> Void in //give a origin for route textField.text = self.currentLocationName textField.userInteractionEnabled = false } addressAlert.addTextFieldWithConfigurationHandler { (textField) -> Void in textField.placeholder = "Destination?" } let createRouteAction = UIAlertAction(title: "Create Route", style: UIAlertActionStyle.Default) { (alertAction) -> Void in let origin = (addressAlert.textFields![0] as! UITextField).text as String let destination = (addressAlert.textFields![1] as! UITextField).text as String self.mapTasks.getDirections(origin, destination: destination, waypoints: nil, travelMode: nil, completionHandler: { (status, success) -> Void in if success { self.configureMapAndMarkersForRoute() self.drawRoute() self.displayRouteInfo() } else { println(status) } }) } let closeAction = UIAlertAction(title: "Close", style: UIAlertActionStyle.Cancel) { (alertAction) -> Void in } addressAlert.addAction(createRouteAction) addressAlert.addAction(closeAction) presentViewController(addressAlert, animated: true, completion: nil) }
希望能帮助到你。
那么我从这里使用了一个MapKit包装 – https://github.com/varshylmobile/MapManager
这个包装提供了几个类
directionsUsingGoogle(#from:NSString, to:NSString,directionCompletionHandler:DirectionsCompletionHandler) directionsUsingGoogle(#from:CLLocationCoordinate2D, to:CLLocationCoordinate2D,directionCompletionHandler:DirectionsCompletionHandler) directionsUsingGoogle(#from:CLLocationCoordinate2D, to:NSString,directionCompletionHandler:DirectionsCompletionHandler)
在这里你可以通过上述方法传递你的CLLocationCoordinate2D 。
- (void)pathCall { if ([_txtAddressCity.text isEqualToString:@""] || [_txtaddressNumber.text isEqualToString:@""] || [_txtAddressState.text isEqualToString:@""] || [_txtAddressStreet.text isEqualToString:@""] || [_txtAddressZip.text isEqualToString:@""]) { //[PCToastMessage toastWithDuration:2.0 andText:NSLocalizedString(@"All fields are compulsory in location.",Nil) inView:self.view]; return ; } else { _endingAddress=[[NSMutableString alloc] initWithString:_txtaddressNumber.text]; [_endingAddress appendString:[NSString stringWithFormat:@",+%@",_txtAddressStreet.text]]; [_endingAddress appendString:[NSString stringWithFormat:@",+%@",_txtAddressCity.text]]; [_endingAddress appendString:[NSString stringWithFormat:@",+%@",_txtAddressState.text]]; [_endingAddress appendString:[NSString stringWithFormat:@",+%@",_txtAddressZip.text]]; [_endingAddress appendString:[_endingAddress stringByReplacingOccurrencesOfString:@" " withString: @"+"]]; NSMutableString *mode= [[NSMutableString alloc]init]; if (_selectedRowOfPicker==1 || _selectedRowOfPicker==0) { [mode appendString:@"driving"]; } else if(_selectedRowOfPicker==2) { [mode appendString:@"bicycling"]; } else if(_selectedRowOfPicker==3) { [mode appendString:@"walking"]; } NSURL *url=[[NSURL alloc] initWithString:[NSString stringWithFormat:@"https://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&mode=%@",[_startingAddress stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding],[_endingAddress stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding],mode]]; NSURLResponse *res; NSError *err; NSData *data=[NSURLConnection sendSynchronousRequest:[[NSURLRequest alloc] initWithURL:url] returningResponse:&res error:&err]; NSDictionary *dic=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; NSMutableArray *totalSeconds; totalSeconds = [[NSMutableArray alloc]init]; NSArray *routes=dic[@"routes"]; path1 = [GMSMutablePath path]; if (routes.count != 0) { NSArray *legs=routes[0][@"legs"]; NSArray *steps=legs[0][@"steps"]; NSDictionary *duration=legs[0][@"duration"]; NSString *totalSeconds = [duration valueForKey:@"value"]; NSDictionary *start_address=legs[0][@"start_location"]; NSDictionary *end_address=legs[0][@"end_location"]; source.latitude = [[start_address valueForKey:@"lat"] doubleValue]; source.longitude = [[start_address valueForKey:@"lng"] doubleValue]; dest.latitude = [[end_address valueForKey:@"lat"] doubleValue]; dest.longitude = [[end_address valueForKey:@"lng"] doubleValue]; NSMutableArray *textsteps=[[NSMutableArray alloc] init]; NSMutableArray *latlong=[[NSMutableArray alloc]init]; for(int i=0; i< [steps count]; i++){ NSString *html=steps[i][@"html_instructions"]; [latlong addObject:steps[i][@"end_location"]]; [textsteps addObject:html]; NSString *polyLinePoints = [[steps[i] objectForKey:@"polyline"] objectForKey:@"points"]; GMSPath *polyLinePath = [GMSPath pathFromEncodedPath:polyLinePoints]; for (int p=0; p<polyLinePath.count; p++) { [path1 addCoordinate:[polyLinePath coordinateAtIndex:p]]; } } self.detailedSteps=textsteps; [self showDirection:latlong]; [_lblJourneyHours setTextColor:[UIColor colorWithWhite:0.33 alpha:1.0]]; _lblJourneyHours.text = [NSString stringWithFormat:@"%.02f", ([totalSeconds floatValue]/60)/60]; } else { _lblJourneyHours.textColor = [UIColor redColor]; _lblJourneyHours.text = @"No route found."; } } } -(void)showDirection:(NSMutableArray*) latlong{ path = [GMSMutablePath path]; bounds = [[GMSCoordinateBounds alloc] init]; if (latlong.count !=0) { for(int i=0; i<[latlong count]; i++){ double lat=[latlong[i][@"lat"] doubleValue]; double lng=[latlong[i][@"lng"] doubleValue]; CLLocationCoordinate2D temp; temp.latitude=lat; temp.longitude=lng; bounds = [bounds includingCoordinate:temp]; [path addLatitude:lat longitude:lng]; } } } - (IBAction)showMAP:(UIButton *)sender { [self hideKeyboard]; if ([_txtAddressCity.text isEqualToString:@""] || [_txtaddressNumber.text isEqualToString:@""] || [_txtAddressState.text isEqualToString:@""] || [_txtAddressStreet.text isEqualToString:@""] || [_txtAddressZip.text isEqualToString:@""]) { [PCToastMessage toastWithDuration:2.0 andText:NSLocalizedString(@"All fields are compulsory in location.",Nil) inView:self.view]; return ; } if ([_lblJourneyHours.text isEqualToString:@"No route found."]) { [PCToastMessage toastWithDuration:2.0 andText:NSLocalizedString(@"No route found.",Nil) inView:self.view]; return ; } else { _mapButton.userInteractionEnabled = NO; popUp = [[UIView alloc]initWithFrame:CGRectMake(self.view.frame.origin.x,0, self.view.frame.size.width, self.view.frame.size.height)]; GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:source.latitude longitude:source.longitude zoom:7];//23.0300° N, 72.5800° E mapView = [GMSMapView mapWithFrame:CGRectMake(popUp.frame.origin.x+10, popUp.frame.origin.y+10, popUp.frame.size.width-20, popUp.frame.size.height-20) camera:camera]; [mapView animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds withPadding:30.0f]]; popUp.backgroundColor = [UIColor whiteColor]; popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001); [self.view addSubview:popUp]; GMSPolyline *polyline = [GMSPolyline polylineWithPath:path1]; polyline.strokeColor = [UIColor blueColor]; polyline.strokeWidth = 3.f; mapView.myLocationEnabled=YES; polyline.map =mapView ; GMSMarker *marker=[[GMSMarker alloc]init]; marker.position=CLLocationCoordinate2DMake(source.latitude, source.longitude); marker.groundAnchor=CGPointMake(0.52,0.8); GMSMarker *marker2=[[GMSMarker alloc]init]; marker2.position=CLLocationCoordinate2DMake(dest.latitude, dest.longitude); marker2.groundAnchor=CGPointMake(0.52,0.8); marker.map=mapView; marker2.map=mapView; [popUp addSubview:mapView]; UIButton *closeMap = [[UIButton alloc]initWithFrame:CGRectMake(mapView.frame.size.width-17,mapView.frame.origin.y-6 , 35, 35)]; [closeMap setBackgroundImage:[UIImage imageNamed:@"cross.png"] forState:UIControlStateNormal]; closeMap.backgroundColor = [UIColor clearColor]; [closeMap addTarget:self action:@selector(closeMapAction)forControlEvents:UIControlEventTouchUpInside]; [popUp addSubview:closeMap]; [UIView animateWithDuration:0.3/1.5 animations:^{ popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1); } completion:^(BOOL finished) { [UIView animateWithDuration:0.3 animations:^{ popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9); } completion:^(BOOL finished) { [UIView animateWithDuration:0.1 animations:^{ popUp.transform = CGAffineTransformIdentity; _mapButton.userInteractionEnabled = YES; }]; }]; }]; } }
您可以将纬度长度转换为给定的格式，然后调用Google路线API获取完整的路线 –
let originLat: String = String(format: "%f",self.currentLocation!.coordinate.latitude) let originLong: String = String(format: "%f", self.currentLocation!.coordinate.longitude) let destLat: String = String(format: "%f", self.destinationLocation!.coordinate.latitude) let destLong: String = String(format: "%f", self.destinationLocation!.coordinate.longitude) let origin: String = "\(originLat), \(originLong)" let destination: String = "\(destLat), \(destLong)" var params: [String: String] = [:] params.updateValue("YOUR_GOOGLE_API_KEY", forKey: "key") // params.updateValue("50000", forKey: "radius") params.updateValue("driving", forKey: "mode") params.updateValue(origin, forKey: "origin") params.updateValue(destination, forKey: "destination") params.updateValue("best_guess", forKey: "traffic_model") params.updateValue("imperial", forKey: "units") let departureTime = NSDate().timeIntervalSince1970 params.updateValue(String(format:"%.0f", departureTime), forKey: "departure_time") let pm = setGetParameters(params) let method = "GET" let finalUrl = "https://maps.googleapis.com/maps/api/directions/json?\(pm)" NSLog("Url for directions call - \(finalUrl)") // Create URL Request var request: NSMutableURLRequest! let urlStr : NSString = finalUrl.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())! let nsUrl: NSURL = NSURL(string: urlStr as String)! request = NSMutableURLRequest(URL: nsUrl) request.HTTPMethod = method request.setValue("application/json", forHTTPHeaderField: "Content-Type") request.setValue("application/json", forHTTPHeaderField: "Accept") request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData let session = NSURLSession.sharedSession() let task = session.dataTaskWithRequest(request) { (data, response, error) -> Void in // Handle incoming data like you would in synchronous request NSLog("Got response from Get Directions API") callBack(data: data, response: response, error: error) } task.resume()