free geocoding

1. Geocoding: The conversion of a ' place name string ' to ' latitude and longitude ' [Geocoder geocodeaddressstring:-(void) geocoder{1. Creating the encoding/anti-encoding managerClgeocoder *geocoder = [[Clgeocoder alloc]init];2. Geocoding: Convert ' place name string ' to ' latitude and longitude '[Geocoder geocodeaddressstring:@ "Beijing" completionhandler:^ (Nsarray *placemarks, Nserror *error) {Placema

#import "ViewController.h"#import @interface viewcontroller () @end@implementation Viewcontroller-(void) viewdidload { [Super viewdidload]; // geo-coding [self geocoder:nil]; // anti-geo-coding ; }No Internet , no way to do it. -(void) Geocoder: (UIButton*) sender {// Initialize geocoding classes clgeocoder *geo=[[clgeocoder alloc]init]; // start geocoding [Geo geocodeaddressstring:@ " Beijin

---restore content starts---Basic Android itself with the Geocoder this class can also be achieved for the latitude and longitude of the positive and negative Yi, but its own bugs exist a lot, especially in the stability of the resolution here, Google provides geocoding stability more good, although its usage is a little more complex, In fact, its general working principle is the HTTP protocol, Google has an open interface, we will be the latitude and

= (cllocationcoordinate2d) {latitude, longitude}; Bmkreversegeocodeoption *reversegeocodesearchoption = [[Bmkreversegeocodeoption alloc]init]; Reversegeocodesearchoption.reversegeopoint = pt; BOOL flag = [_geocodesearch reversegeocode:reversegeocodesearchoption]; if (flag) { NSLog (@ "anti-geo retrieval sent successfully"); } else { NSLog (@ "anti-geo retrieval send Failed");} } which /** * Base coordinates get address information * Asynch

It is now often necessary to provide some information about location based on the location provided by the user. Sometimes you can directly determine the latitude and longitude of the user, sometimes not necessarily determine the user's latitude and longitude information, the user is through the input of some road name, landmark building or store name location, but our database may not be stored in the user may enter the latitude of these location information, At this point you can use some map-

: parse the JSON string // Parse the root element to obtain an array jsonarray jsonobjs = new jsonobject (STR ). getjsonarray ("Results"); // retrieves the first JSON object in the array (in this example, the array actually contains only one element). jsonobject jsonobj = jsonobjs. getjsonobject (0); // parses the formatted_address value string address = jsonobj. getstring ("formatted_address"); // parse the geometry jsonobject geometry = jsonobj in the json object. getjsonobject ("Geometry"); /

, location.coordinate.longitude); + A the + //Reverse geocoding - $Clgeocoder *clgeocoder =[[Clgeocoder alloc] init]; $ -Cllocation *CL =[[Cllocation alloc] InitWithLatitude:location.coordinate.latitude longitude:location.coordinate.longitude]; - the[Clgeocoder reversegeocodelocation:cl Completionhandler: ^ (Nsarray *placemarks,nserror *error) { - Wuyi for(Clplacemark *placemarkinchplacemarks) { the - Wu -Nsdictio

=longitude , QS can become the following three kinds of forms: Location=latitudelocation=longitude Location[0]=latitudelocation[1]=longitude Location[]=latitudelocation[]=longitude are not in line with the Baidu Map API interface requirements.If you want to avoid the trouble of string connection, using the String-format library is also very convenient, but the URL will also knock very long, it is better to use the QueryString library beautiful.Or you can use the QueryString

German api:http://lbs.amap.com/api/webservice/guide/api/georegeo/Http://restapi.amap.com/v3/geocode/geo?key=7de8697669288fc848e12a08f58d995es=rsv3city= , Hangzhou Address= Modern Building, No. 87th Tiancheng Road, Hangzhou, ChinaThe key on the side is the key that is open to others, and it feels good to use it. Basically there is no big limit, using the top interface to get latitude and longitude is basically 100% successful, but this coordinate system is GCJ02 coordinates.The result information

Geocoding implementations

On csdn, I saw a new model of open-source news software: free software is not free. This concept is always described as "free", but not the true meaning of the word "free.Open source originated from free software ". This is also the first time most people hear the phrase "Free