我正在使用此代码尝试获取两个位置之间的路线。但它使用纬度和经度输出坐标。但我想要的是根据2个地址获取搜索方向。如何使用此代码处理地址？
MKPlacemark *source = [[MKPlacemark alloc]initWithCoordinate:CLLocationCoordinate2DMake(37.776142, -122.424774) addressDictionary:[NSDictionary dictionaryWithObjectsAndKeys:@"",@"", nil] ];
MKMapItem *srcMapItem = [[MKMapItem alloc]initWithPlacemark:source];
[srcMapItem setName:@""];
MKPlacemark *destination = [[MKPlacemark alloc]initWithCoordinate:CLLocationCoordinate2DMake(37.73787, -122.373962) addressDictionary:[NSDictionary dictionaryWithObjectsAndKeys:@"",@"", nil] ];
MKMapItem *distMapItem = [[MKMapItem alloc]initWithPlacemark:destination];
[distMapItem setName:@""];
MKDirectionsRequest *request = [[MKDirectionsRequest alloc]init];
[request setSource:srcMapItem];
[request setDestination:distMapItem];
[request setTransportType:MKDirectionsTransportTypeAny];
MKDirections *direction = [[MKDirections alloc]initWithRequest:request];
[direction calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) {
NSLog(@"response = %@",response);
NSArray *arrRoutes = [response routes];
[arrRoutes enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
MKRoute *rout = obj;
MKPolyline *line = [rout polyline];
[mapview addOverlay:line];
NSLog(@"Rout Name : %@",rout.name);
NSLog(@"Total Distance (in Meters) :%f",rout.distance);
NSArray *steps = [rout steps];
NSLog(@"Total Steps : %lu",(unsigned long)[steps count]);
NSMutableArray *stepsArray=[[NSMutableArray alloc] init];
[steps enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSLog(@"Rout Instruction : %@",[obj instructions]);
NSLog(@"Rout Distance : %f",[obj distance]);
[stepsArray addObject:[obj instructions]];
}];
[self myShowDirections:response];
self.steps.text=[NSString stringWithFormat:@"%@",stepsArray];
答案 0 :(得分：2)
首先，您需要在视图执行中检查ios8
locationManager = [[CLLocationManager alloc]init];
locationManager.delegate = self;
// self.map.showsUserLocation=YES;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager setDistanceFilter:kCLDistanceFilterNone];
if([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0){
NSUInteger code = [CLLocationManager authorizationStatus];
if (code == kCLAuthorizationStatusNotDetermined && ([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)] || [locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])) {
// choose one request according to your business.
if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"]){
[locationManager requestAlwaysAuthorization];
} else if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"]) {
[locationManager requestWhenInUseAuthorization];
} else {
NSLog(@"Info.plist does not contain NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription");
}
}
-(void) centerMapForCoordinateArray:(CLLocationCoordinate2D *)routes andCount:(int)count{
MKCoordinateRegion region;
CLLocationDegrees maxLat = -90;
CLLocationDegrees maxLon = -180;
CLLocationDegrees minLat = 90;
CLLocationDegrees minLon = 180;
for(int idx = 0; idx <count; idx++)
{
CLLocationCoordinate2D currentLocations = routes[idx];
if(currentLocations.latitude > maxLat)
maxLat = currentLocations.latitude;
if(currentLocations.latitude < minLat)
minLat = currentLocations.latitude;
if(currentLocations.longitude > maxLon)
maxLon = currentLocations.longitude;
if(currentLocations.longitude < minLon)
minLon = currentLocations.longitude;
}
region.center.latitude = (maxLat + minLat) / 2;
region.center.longitude = (maxLon + minLon) / 2;
region.span.latitudeDelta = maxLat - minLat;
region.span.longitudeDelta = maxLon - minLon;
[self.map setRegion:region animated:YES];
}
- (MKPolyline *)polylineWithEncodedString:(NSString *)encodedString {
const char *bytes = [encodedString UTF8String];
NSUInteger length = [encodedString lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
NSUInteger idx = 0;
NSUInteger count = length / 4;
CLLocationCoordinate2D *coords = calloc(count, sizeof(CLLocationCoordinate2D));
NSUInteger coordIdx = 0;
float latitude = 0;
float longitude = 0;
while (idx < length) {
char byte = 0;
int res = 0;
char shift = 0;
do {
byte = bytes[idx++] - 63;
res |= (byte & 0x1F) << shift;
shift += 5;
} while (byte >= 0x20);
float deltaLat = ((res & 1) ? ~(res >> 1) : (res >> 1));
latitude += deltaLat;
shift = 0;
res = 0;
do {
byte = bytes[idx++] - 0x3F;
res |= (byte & 0x1F) << shift;
shift += 5;
} while (byte >= 0x20);
float deltaLon = ((res & 1) ? ~(res >> 1) : (res >> 1));
longitude += deltaLon;
float finalLat = latitude * 1E-5;
float finalLon = longitude * 1E-5;
CLLocationCoordinate2D coord = CLLocationCoordinate2DMake(finalLat, finalLon);
coords[coordIdx++] = coord;
if (coordIdx == count) {
NSUInteger newCount = count + 10;
coords = realloc(coords, newCount * sizeof(CLLocationCoordinate2D));
count = newCount;
}
}
MKPolyline *polyline = [MKPolyline polylineWithCoordinates:coords count:coordIdx];
free(coords);
return polyline;
}
- (void)getDirections {
CLLocation *newLocation = [[CLLocation alloc] initWithLatitude:currentLocation.coordinate.latitude longitude:currentLocation.coordinate.longitude];
MKPointAnnotation *provider = [[MKPointAnnotation alloc] init];
provider.coordinate = CLLocationCoordinate2DMake(newLocation.coordinate.latitude, newLocation.coordinate.longitude);
provider.title = [self getAddress];
[self.map addAnnotation:provider];
// 13.069166 80.191388
CLLocationCoordinate2D location;
// location.latitude =12.982672000000000000; // change to your coordinate latitude
// location.longitude =80.263380999999980000;
location.latitude =[self.Latitude doubleValue]; // change to your coordinate latitude
location.longitude =[self.Longtitude doubleValue];
CLLocation *keyPlace = [[CLLocation alloc] initWithLatitude:location.latitude longitude:location.longitude];
MKPointAnnotation *user = [[MKPointAnnotation alloc] init];
user.coordinate = CLLocationCoordinate2DMake(keyPlace.coordinate.latitude, keyPlace.coordinate.longitude);
NSString *add=[NSString stringWithFormat:@"%f %f",location.latitude,location.longitude];
NSString *tit=[self getAddressFromLatLong:add];
user.title=tit;
[self.map addAnnotation:user];
CLLocationCoordinate2D endCoordinate;
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://maps.googleapis.com/maps/api/directions/json?origin=%f,%f&destination=%f,%f&sensor=false&mode=driving", newLocation.coordinate.latitude, newLocation.coordinate.longitude, keyPlace.coordinate.latitude, keyPlace.coordinate.longitude]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLResponse *response = nil;
NSError *error = nil;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
if (!error) {
NSDictionary *responseDict = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingAllowFragments error:&error];
if ([[responseDict valueForKey:@"status"] isEqualToString:@"ZERO_RESULTS"]) {
[[[UIAlertView alloc] initWithTitle:@"Error"
message:@"Could not route path from your current location"
delegate:nil
cancelButtonTitle:@"Close"
otherButtonTitles:nil, nil] show];
return;
}
int points_count = 0;
if ([[responseDict objectForKey:@"routes"] count])
points_count = (int)[[[[[[responseDict objectForKey:@"routes"] objectAtIndex:0] objectForKey:@"legs"] objectAtIndex:0] objectForKey:@"steps"] count];
if (!points_count) {
[[[UIAlertView alloc] initWithTitle:@"Error"
message:@"Could not route path from your current location"
delegate:nil
cancelButtonTitle:@"Close"
otherButtonTitles:nil, nil] show];
return;
}
CLLocationCoordinate2D points[points_count];
NSLog(@"routes %@", [[[[responseDict objectForKey:@"routes"] objectAtIndex:0]objectForKey:@"overview_polyline"] objectForKey:@"points"]
);
MKPolyline *polyline = [self polylineWithEncodedString:[[[[responseDict objectForKey:@"routes"] objectAtIndex:0]objectForKey:@"overview_polyline"] objectForKey:@"points"]];
[self.map addOverlay:polyline];
int j = 0;
NSArray *steps = nil;
if (points_count && [[[[responseDict objectForKey:@"routes"] objectAtIndex:0] objectForKey:@"legs"] count])
steps = [[[[[responseDict objectForKey:@"routes"] objectAtIndex:0] objectForKey:@"legs"] objectAtIndex:0] objectForKey:@"steps"];
for (int i = 0; i < points_count; i++) {
double st_lat = [[[[steps objectAtIndex:i] objectForKey:@"start_location"] valueForKey:@"lat"] doubleValue];
double st_lon = [[[[steps objectAtIndex:i] objectForKey:@"start_location"] valueForKey:@"lng"] doubleValue];
//NSLog(@"lat lon: %f %f", st_lat, st_lon);
if (st_lat > 0.0f && st_lon > 0.0f) {
points[j] = CLLocationCoordinate2DMake(st_lat, st_lon);
j++;
}
double end_lat = [[[[steps objectAtIndex:i] objectForKey:@"end_location"] valueForKey:@"lat"] doubleValue];
double end_lon = [[[[steps objectAtIndex:i] objectForKey:@"end_location"] valueForKey:@"lng"] doubleValue];
//NSLog(@"lat %f lng %f",end_lat,end_lon);
//if (end_lat > 0.0f && end_lon > 0.0f) {
points[j] = CLLocationCoordinate2DMake(end_lat, end_lon);
endCoordinate = CLLocationCoordinate2DMake(end_lat, end_lon);
j++;
//}
}
NSLog(@"points Count %d",points_count);
// MKPolyline *polyline = [MKPolyline polylineWithCoordinates:points count:points_count];
// [self.mapView addOverlay:polyline];
[self centerMapForCoordinateArray:points andCount:points_count];
}
}
- (MKPolylineRenderer *)mapView:(MKMapView *)mapView
viewForOverlay:(id<MKOverlay>)overlay {
MKPolylineRenderer *polylineView = [[MKPolylineRenderer alloc] initWithOverlay:overlay];
polylineView.lineWidth = 3;
polylineView.strokeColor = [[UIColor alloc] initWithRed:5.0/255 green:102.0/255 blue:48.0/255 alpha:1];
return polylineView;
}
-(void)showRoute:(MKDirectionsResponse *)response
{
for (MKRoute *route in response.routes){
[mapView addOverlay:route.polyline level:MKOverlayLevelAboveRoads];
}
}
-(void)getPathDirections:(CLLocationCoordinate2D)source withDestination:(CLLocationCoordinate2D)destination{
MKPlacemark *placemarkSrc = [[MKPlacemark alloc] initWithCoordinate:source addressDictionary:nil];
MKMapItem *mapItemSrc = [[MKMapItem alloc] initWithPlacemark:placemarkSrc];
MKPlacemark *placemarkDest = [[MKPlacemark alloc] initWithCoordinate:destination addressDictionary:nil];
MKMapItem *mapItemDest = [[MKMapItem alloc] initWithPlacemark:placemarkDest];
[mapItemSrc setName:@"name1"];
[mapItemDest setName:@"name2"];
MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init];
[request setSource:mapItemSrc];
[request setDestination:mapItemDest];
[request setTransportType:MKDirectionsTransportTypeAutomobile];
request.requestsAlternateRoutes = NO;
MKDirections *directions = [[MKDirections alloc] initWithRequest:request];
[directions calculateDirectionsWithCompletionHandler:
^(MKDirectionsResponse *response, NSError *error) {
if (error) {
// Handle Error
// UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"ShareMyTable" message:@"Root Map not available to your location." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
// [alert show];
} else {
[mapView removeOverlays:mapView.overlays];
[self showRoute:response];
}
}];
}
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay
{
// 41,142,175
if ([overlay isKindOfClass:[MKPolyline class]]) {
MKPolyline *route = (MKPolyline *)overlay;
MKPolylineRenderer *routeRenderer = [[MKPolylineRenderer alloc] initWithPolyline:route];
routeRenderer.strokeColor = [UIColor colorWithRed:(41/255.0) green:(142/255.0) blue:(175/255.0) alpha:0.6f];
routeRenderer.lineWidth = 2.5;
return routeRenderer;
}
else return nil;
}
您可以阅读支持的国家/地区列表 link
答案 1 :(得分：0)
当您在两个地方之间发现任何溃败时，请始终使用不同的来源和目的地。 在您的代码中，您使用相同的纬度和经度，因此 MKDirections 没有Rout来指示方向。 所以在你的代码中使用不同的Lat。和龙。 像...
KPlacemark *source = [[MKPlacemark alloc]initWithCoordinate:CLLocationCoordinate2DMake(37.776142, -122.424774) addressDictionary:[NSDictionary dictionaryWithObjectsAndKeys:@"",@"", nil] ];
MKMapItem *srcMapItem = [[MKMapItem alloc]initWithPlacemark:source];
[srcMapItem setName:@""];
MKPlacemark *destination=[[MKPlacemarkalloc]initWithCoordinate:CLLocationCoordinate2DMake(40.73787, -142.373962) addressDictionary:[NSDictionary dictionaryWithObjectsAndKeys:@"",@"", nil] ];
使用此纬度和经度后，您可以在任何两个地方绘制路径。 我希望我的回答对你有所帮助。