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Java library for what3words REST API.
package com.what3words.javawrapper;
import com.what3words.javawrapper.request.AutosuggestRequest;
import com.what3words.javawrapper.request.AvailableLanguagesRequest;
import com.what3words.javawrapper.request.BoundingBox;
import com.what3words.javawrapper.request.ConvertTo3WARequest;
import com.what3words.javawrapper.request.ConvertToCoordinatesRequest;
import com.what3words.javawrapper.request.Coordinates;
import com.what3words.javawrapper.request.GridSectionRequest;
import com.what3words.javawrapper.services.What3WordsV3Service;
import okhttp3.OkHttpClient;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
/**
* Instances of the What3WordsV3 class provide access to Version 3 of the what3words API.
*
*/
public class What3WordsV3 {
private static String DEFAULT_ENDPOINT = "https://api.what3words.com/v3/";
public static final String HEADER_CONTENT_TYPE = "Content-Type";
public static final String CONTENT_TYPE_JSON = "application/json";
public static final String HEADER_WHAT3WORDS_API_KEY = "X-Api-Key";
public static final String W3W_WRAPPER = "X-W3W-Wrapper";
public static final String ANDROID_CERT_HEADER = "X-Android-Cert";
public static final String ANDROID_PACKAGE_HEADER = "X-Android-Package";
private Retrofit retrofit;
private OkHttpClient okHttpClient;
/**
* Get a new API manager instance.
*
* @param apiKey Your what3words API key obtained from https://accounts.what3words.com
*/
public What3WordsV3(String apiKey) {
this(apiKey, DEFAULT_ENDPOINT);
}
/**
* Get a new API manager instance.
*
* @param apiKey Your what3words API key obtained from https://accounts.what3words.com
* @param endpoint override the default public API endpoint
*/
public What3WordsV3(String apiKey, String endpoint) {
this(apiKey, endpoint, null, null);
}
/**
* Get a new API manager instance.
*
* @param apiKey Your what3words API key obtained from https://accounts.what3words.com
* @param packageName For use within Android applications to provide the application package name as part of API key restriction
* @param signature For use within Android applications to provide the application SHA1 signature as part of API key restriction
*/
protected What3WordsV3(String apiKey, String packageName, String signature) {
setupHttpClient(apiKey, DEFAULT_ENDPOINT, packageName, signature);
}
/**
* Get a new API manager instance.
*
* @param apiKey Your what3words API key obtained from https://accounts.what3words.com
* @param endpoint override the default public API endpoint
* @param packageName For use within Android applications to provide the application package name as part of API key restriction
* @param signature For use within Android applications to provide the application SHA1 signature as part of API key restriction
*/
protected What3WordsV3(String apiKey, String endpoint, String packageName, String signature) {
setupHttpClient(apiKey, endpoint, packageName, signature);
}
private void setupHttpClient(String apiKey, String endpoint, String packageName, String signature) {
okHttpClient = new OkHttpClient.Builder()
.addNetworkInterceptor(new What3WordsV3Interceptor(apiKey, packageName, signature))
.build();
retrofit = new Retrofit.Builder()
.baseUrl(endpoint)
.addConverterFactory(GsonConverterFactory.create())
.client(getOkHttpClientInstance()).build();
}
/**
* Return the {@link Retrofit} instance. If called for the first time builds the instance.
* @return this retrofit instance
*/
public Retrofit getRetrofitInstance() {
return retrofit;
}
private OkHttpClient getOkHttpClientInstance() {
return okHttpClient;
}
/**
* Convert a latitude and longitude to a 3 word address, in the language of your choice. It also returns country,
* the bounds of the grid square, a nearest place (such as a local town) and a link to our map site.
*
* @param coordinates the latitude and longitude of the location to convert to 3 word address
* @return a {@link ConvertTo3WARequest.Builder} instance suitable for invoking a convert-to-3wa API request
*/
public ConvertTo3WARequest.Builder convertTo3wa(Coordinates coordinates) {
return new ConvertTo3WARequest.Builder(this, coordinates);
}
/**
* Convert a 3 word address to a latitude and longitude. It also returns country, the bounds of the grid square,
* a nearest place (such as a local town) and a link to our map site.
*
* @param words A 3 word address as a string. It must be three words separated with dots or a Japanese middle dot character (・).
* Words separated by spaces will be rejected. Optionally, the 3 word address can be prefixed with ///
* @return a {@link ConvertToCoordinatesRequest.Builder} instance suitable for invoking a convert-to-coordinates API request
*/
public ConvertToCoordinatesRequest.Builder convertToCoordinates(String words) {
return new ConvertToCoordinatesRequest.Builder(this, words);
}
/**
* AutoSuggest can take a slightly incorrect 3 word address, and suggest a list of valid 3 word addresses. It has powerful
* features which can, for example, optionally limit results to a country or area, and prefer results which are near the user.
* For full details, please see the complete API documentation at https://docs.what3words.com/api/v3/#autosuggest
*
* @param input The full or partial 3 word address to obtain suggestions for. At minimum this must be the first two complete
* words plus at least one character from the third word.
* @return a {@link AutosuggestRequest.Builder} instance suitable for invoking a autosuggest API request
*/
public AutosuggestRequest.Builder autosuggest(String input) {
return new AutosuggestRequest.Builder(this, input);
}
/**
* Returns a section of the 3m x 3m what3words grid for a bounding box. The bounding box is specified by lat,lng,lat,lng
* as south,west,north,east.
*
* @param boundingBox BoundingBox, for which the grid should be returned. The requested box must not exceed 4km
* from corner to corner. Latitudes must be >= -90 and <= 90, but longitudes are allowed to wrap around 180. To specify a
* bounding-box that crosses the anti-meridian, use longitude greater than 180.
* @return a {@link GridSectionRequest.Builder} instance suitable for invoking a grid-section API request
*/
public GridSectionRequest.Builder gridSection(BoundingBox boundingBox) {
return new GridSectionRequest.Builder(this, boundingBox);
}
/**
* Retrieves a list all available 3 word address languages, including the ISO 639-1 2 letter code, english name and native name.
*
* @return a {@link AvailableLanguagesRequest.Builder} instance suitable for invoking a available-languages API request
*/
public AvailableLanguagesRequest.Builder availableLanguages() {
return new AvailableLanguagesRequest.Builder(this);
}
public What3WordsV3Service what3words() {
return getRetrofitInstance().create(What3WordsV3Service.class);
}
// String apiKey() {
// return apiKey;
// }
}