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Editorial Team
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Asked: 2026-06-18T18:31:32+00:00

The soundcloud documentation has no sample for updating a playlist using java wrapper. I

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The soundcloud documentation has no sample for updating a playlist using java wrapper. I tried something like this but it didn’t update the tracks. And no error messages returned.

HttpResponse resp = wrapper
  .put(Request.to("/me/playlists/123")
  .with("playlist[title]", "updated title", "playlist[tracks]", "[
    {id: 10001},
    {id: 10002}
  ]"));

Any ideas?

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1 Answer

  1. Editorial Team

    The problem is that you’re using a mix of Rails style form parameters and JSON.

    There are two options:

    1) Only use form parameters:

    HttpResponse resp = api.put(Request.to("/playlists/123")                          
        .with("playlist[title]", "updated title")                         
        .with("playlist[tracks][][id]", 10001)     
        .with("playlist[tracks][][id]", 10002));

    2) Submit playlist data as JSON:

    private void updatePlaylist() {
    JSONObject json = createJSONPlaylist("updated title", 10001, 10002);
    HttpResponse resp = api.put(Request.to("/playlists/123")                     
        .withContent(json.toString(), "application/json"));
}

private JSONObject createJSONPlaylist(String title, long... trackIds) throws JSONException { 
    JSONObject playlist = new JSONObject();                                                  
    playlist.put("title", title);                                                            

    JSONObject json = new JSONObject();                                                      
    json.put("playlist", playlist);                                                          

    JSONArray tracks = new JSONArray();                                                      
    playlist.put("tracks", tracks);                                                          

    for (long id : trackIds) {                                                               
        JSONObject track = new JSONObject();                                                 
        track.put("id", id);                                                                 
        tracks.put(track);                                                                   
    }                                                                                        
    return json;                                                                             
}

    Check out the tests in the wrapper to see them in action:

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