我想使用Google API在两个CLLocationCoordinates之间绘制路线。目前我正在使用“iOS8 Day-by-Day :: Day 14 :: Rotation Deprecation？”有起源和目的地，这不是我想要做的。我想传递我的位置而不是位置名称，然后制作路线。
先谢谢。
答案 0 :(得分：2)
我关注了Google地图SDK的THIS教程。在该教程中，路由用户必须将位置名称添加到alertView。但我对代码进行了一些修改，因此您可以直接从使用当前位置获取路由到输入目的地位置。
首先以observeValueForKeyPath方式从用户的当前位置获取位置名称：
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，将这个城市名称或者您想要的内容命名为：
@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)
}
希望它有所帮助。
答案 1 :(得分：1)
我从这里使用了一个MapKit包装器 - https://github.com/varshylmobile/MapManager
这个包装器提供了几个类，如
directionsUsingGoogle(#from:NSString, to:NSString,directionCompletionHandler:DirectionsCompletionHandler)
directionsUsingGoogle(#from:CLLocationCoordinate2D, to:CLLocationCoordinate2D,directionCompletionHandler:DirectionsCompletionHandler)
directionsUsingGoogle(#from:CLLocationCoordinate2D, to:NSString,directionCompletionHandler:DirectionsCompletionHandler)
您可以在此处通过上述方法中的CLLocationCoordinate2D。
答案 2 :(得分：1)
- (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;
}];
}];
}];
}
}
答案 3 :(得分：1)
您可以将lat long转换为给定格式，然后调用Google Directions API获取完整路线 -
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()