今月初めに同じ問題に苦しんでいました。AndroidでカスタムRESTfulサービスを利用するための良い方法を探していました。Scribe( https://github.com/fernandezpablo85/scribe-java )という名前のこのライブラリに出くわしました。それはAndroidで本当にうまく機能します。さらに良いことに、FoursquareOAuthがすでにサポートされています。Scribe + Android+Foursquareで動作することを示すサンプルファイルは次のとおりです。
package org.scribe.examples;
import java.util.Scanner;
import org.scribe.builder.*;
import org.scribe.builder.api.*;
import org.scribe.model.*;
import org.scribe.oauth.*;
public class FoursquareExample
{
private static final String PROTECTED_RESOURCE_URL = "http://api.foursquare.com/v1/user";
public static void main(String[] args)
{
OAuthService service = new ServiceBuilder()
.provider(FoursquareApi.class)
.apiKey("FEGFXJUFANVVDHVSNUAMUKTTXCP1AJQD53E33XKJ44YP1S4I")
.apiSecret("AYWKUL5SWPNC0CTQ202QXRUG2NLZYXMRA34ZSDW4AUYBG2RC")
.build();
Scanner in = new Scanner(System.in);
System.out.println("=== Foursquare's OAuth Workflow ===");
System.out.println();
// Obtain the Request Token
System.out.println("Fetching the Request Token...");
Token requestToken = service.getRequestToken();
System.out.println("Got the Request Token!");
System.out.println();
System.out.println("Now go and authorize Scribe here:");
System.out.println(service.getAuthorizationUrl(requestToken));
System.out.println("And paste the verifier here");
System.out.print(">>");
Verifier verifier = new Verifier(in.nextLine());
System.out.println();
// Trade the Request Token and Verfier for the Access Token
System.out.println("Trading the Request Token for an Access Token...");
Token accessToken = service.getAccessToken(requestToken, verifier);
System.out.println("Got the Access Token!");
System.out.println("(if your curious it looks like this: " + accessToken + " )");
System.out.println();
// Now let's go and ask for a protected resource!
System.out.println("Now we're going to access a protected resource...");
OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL);
service.signRequest(accessToken, request);
Response response = request.send();
System.out.println("Got it! Lets see what we found...");
System.out.println();
System.out.println(response.getBody());
System.out.println();
System.out.println("Thats it man! Go and build something awesome with Scribe! :)");
}
}