Question

我已经测试了我的订阅密钥，并且一切都很好（每次执行都会获得成功的代码），但是我似乎无法弄清楚如何使用@GET和@正确识别所需的数据类型。 SerializedName批注。这是我的代码以及Spotify提供的JSON示例。

API返回单个对象：

当前正在播放的课程

public class CurrentlyPlaying {
    @SerializedName("/item/id")
    private String songId;

    @SerializedName("/item/album/external_urls")
    private String albumUrl;

    public String getSongId() {
        return songId;
    }

    public String getAlbumUrl() {
        return albumUrl;
    }
}

Spotify Player API接口

public interface SpotifyPlayerApi {
    @GET("v1/me/player/currently-playing")
    Call<CurrentlyPlaying> getCurrentlyPlaying();
}

发现示例JSON响应

{
  "context": {
    "external_urls" : {
      "spotify" : "http://open.spotify.com/user/spotify/playlist/49znshcYJROspEqBoHg3Sv"
    },
    "href" : "https://api.spotify.com/v1/users/spotify/playlists/49znshcYJROspEqBoHg3Sv",
    "type" : "playlist",
    "uri" : "spotify:user:spotify:playlist:49znshcYJROspEqBoHg3Sv"
  },
  "timestamp": 1490252122574,
  "progress_ms": 44272,
  "is_playing": true,
  "currently_playing_type": "track",
  "item": {
    "album": {
      "album_type": "album",
      "external_urls": {
        "spotify": "https://open.spotify.com/album/6TJmQnO44YE5BtTxH8pop1"
      },
      "href": "https://api.spotify.com/v1/albums/6TJmQnO44YE5BtTxH8pop1",
      "id": "6TJmQnO44YE5BtTxH8pop1",
      "images": [
        {
          "height": 640,
          "url": "https://i.scdn.co/image/8e13218039f81b000553e25522a7f0d7a0600f2e",
          "width": 629
        },
        {
          "height": 300,
          "url": "https://i.scdn.co/image/8c1e066b5d1045038437d92815d49987f519e44f",
          "width": 295
        },
        {
          "height": 64,
          "url": "https://i.scdn.co/image/d49268a8fc0768084f4750cf1647709e89a27172",
          "width": 63
        }
      ],
      "name": "Hot Fuss",
      "type": "album",
      "uri": "spotify:album:6TJmQnO44YE5BtTxH8pop1"
    },
    "artists": [
      {
        "external_urls": {
          "spotify": "https://open.spotify.com/artist/0C0XlULifJtAgn6ZNCW2eu"
        },
        "href": "https://api.spotify.com/v1/artists/0C0XlULifJtAgn6ZNCW2eu",
        "id": "0C0XlULifJtAgn6ZNCW2eu",
        "name": "The Killers",
        "type": "artist",
        "uri": "spotify:artist:0C0XlULifJtAgn6ZNCW2eu"
      }
    ],
    "available_markets": [
      "AD",
      "AR",
      "TW",
      "UY"
    ],
    "disc_number": 1,
    "duration_ms": 222075,
    "explicit": false,
    "external_ids": {
      "isrc": "USIR20400274"
    },
    "external_urls": {
      "spotify": "https://open.spotify.com/track/0eGsygTp906u18L0Oimnem"
    },
    "href": "https://api.spotify.com/v1/tracks/0eGsygTp906u18L0Oimnem",
    "id": "0eGsygTp906u18L0Oimnem",
    "name": "Mr. Brightside",
    "popularity": 0,
    "preview_url": "http://d318706lgtcm8e.cloudfront.net/mp3-preview/f454c8224828e21fa146af84916fd22cb89cedc6",
    "track_number": 2,
    "type": "track",
    "uri": "spotify:track:0eGsygTp906u18L0Oimnem"
  }
}

我要检索的两个变量是/ item / id（歌曲ID）和/ item / album / external_urls（专辑URL）。每当我运行代码时，两个值都为null。任何帮助将不胜感激。

使用翻新版解析Spotify Web API端点（Android）

0 个答案: