Posted on November 17, 2010 at 2:05 am

Foursquare API for Java Applications

API for JAVA

Hello!, today I am going to be presenting a new small project called foursquared-desktop-api about an API that lets you interact with FourSquare.com . This project that takes advantage the work made by the authors of  foursquared , an excelent opensouce mobile app, originally made for android. I decided to release a Java version since I could not find anything like this arond.

Some of the best features are…

  • Complete class model of foursquare objects and messages.
  • Json parsers for all the messages.
  • Version #1 of the api is supported.
  • It identifies as a mobile app (by default)
  • Nice and clean coding.
  • Able to use both Http and Oauth.

Project Summary:

That’s all folks by now! Next time I probably will be introducing some of the work I am doing with this API.

Thanks for reading and feel free to send me any comments. Below I pasted a short Junit (sample code) with basic usage of this api.

Sample Usage :

  1. package com.lemil.forsquares.server.foursquare.api;
  3. import junit.framework.TestCase;
  5. import org.json.JSONObject;
  7. import com.lemil.forsquares.api.foursquare.FoursquareApi.Location;
  8. import com.lemil.forsquares.api.foursquare.types.Checkin;
  9. import com.lemil.forsquares.api.foursquare.types.CheckinResult;
  10. import com.lemil.forsquares.api.foursquare.types.Group;
  11. import com.lemil.forsquares.server.ForSquaresServiceImpl;
  13. public class ForSquaresServiceTest extends TestCase   {
  15. String phoneNumber = “phonenumber”;
  16. String password = “passowrd”;
  17. String geolat = “-34.488483210361125″;
  18. String geolong = “-58.52286100387573″;
  20. ForSquaresServiceImpl service = null;
  22. public ForSquaresServiceTest() {
  24. }
  26. @Override
  27. protected void setUp() throws Exception {
  28. super.setUp();
  30. service = new ForSquaresServiceImpl(phoneNumber, password);
  32. service.loadApi();
  34. }
  37. public void testLogin(){
  38. try {
  40. boolean b = service.isApiLoaded();
  42. assert(b);
  43. } catch(Exception e) {
  44. e.printStackTrace();
  45. assert(false);
  46. }
  47. }
  49. //Group<Checkin> getRecentCheckinsFromFriends() throws IllegalArgumentException ;
  51. public void testGetRecentCheckinsFromFriends(){
  52. try {
  54. Location location = new Location(geolat, geolong);
  56. Group<Checkin> fc = service.getRecentCheckinsFromFriends(location);
  57. for(Checkin c : fc) {
  58. JSONObject o  = new JSONObject(c);
  59. System.out.println(o.toString());
  60. }
  61. assert(true);
  62. } catch(Exception e) {
  63. e.printStackTrace();
  64. assert(false);
  65. }
  66. }
  69. //CheckinResult checkin(String input) throws IllegalArgumentException;
  70. public void testCheckin(){
  71. try {
  72. String venueId = “2201505″;
  73. String venueName = “Starbucks”;
  74. Location location = new Location(“-34.54567867050709″, “-58.48865747451782″);
  75. String shout = null;
  76. boolean isPrivate = true;
  77. boolean tellFollowers = false;
  78. boolean twitter = false;
  79. boolean facebook = false;
  80. CheckinResult c = service.checkin(venueId, venueName, location, shout, isPrivate, tellFollowers, twitter, facebook);
  81. JSONObject o  = new JSONObject(c);
  82. System.out.println(o.toString());
  83. assert(true);
  84. } catch(Exception e) {
  85. e.printStackTrace();
  86. assert(false);
  87. }
  88. }

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