Question

我已经开始在android中学习Api消费。我使用了改造但是我收到了错误。我有以下Api响应

{
  "matches": [
    {
      "unique_id": 1122277,
      "date": "2018-01-13T00:00:00.000Z",
      "team-2": "India",
      "team-1": "South Africa",
      "type": "Test",
      "dateTimeGMT": "2018-01-13T08:00:00.000Z",
      "squad": true,
      "toss_winner_team": "South Africa",
      "matchStarted": true
    },
    {
      "unique_id": 1116902,
      "team-2": "Namibia Under-19s",
      "team-1": "England Under-19s",
      "type": "YouthODI",
      "date": "2018-01-14T00:00:00.000Z",
      "dateTimeGMT": "2018-01-14T21:30:00.000Z",
      "squad": true,
      "toss_winner_team": "Namibia Under-19s",
      "winner_team": "England Under-19s",
      "matchStarted": true
    }
      ],
  "v": "1",
  "ttl": 68,
  "provider": {
    "source": "Various",
    "url": "https://cricapi.com/",
    "pubDate": "2018-01-16T16:28:19.313Z"
  },
  "creditsLeft": 250
}

我有以下代码

模型类

 public class NewMatchList {

    List<MatchList> matchList;

    public NewMatchList(List<MatchList> matchList) {
        this.matchList = matchList;
    }

    public List<MatchList> getMatchList() {
        return matchList;
    }

    public void setMatchList(List<MatchList> matchList) {
        this.matchList = matchList;
    }

    @Override
    public String toString() {
        return super.toString();
    }

    public class MatchList{
        private int id;
        private String date;
        private String teamOne;
        private String teamTwo;
        private String matchType;
        private String dateTimeGMT;
        private boolean squad;
        private String tossWinnerTeam;
        private String winnerTeam;
        private boolean matchStarted;


        public MatchList(int id, String date, String teamOne, String teamTwo, String matchType, String dateTimeGMT, boolean squad, String tossWinnerTeam, String winnerTeam, boolean matchStarted) {
            this.id = id;
            this.date = date;
            this.teamOne = teamOne;
            this.teamTwo = teamTwo;
            this.matchType = matchType;
            this.dateTimeGMT = dateTimeGMT;
            this.squad = squad;
            this.tossWinnerTeam = tossWinnerTeam;
            this.winnerTeam = winnerTeam;
            this.matchStarted = matchStarted;
        }
        @Override
        public String toString() {
            return super.toString();
        }
        public int getId() {
            return id;
        }

        public void setId(int id) {
            this.id = id;
        }

        public String getDate() {
            return date;
        }

        public void setDate(String date) {
            this.date = date;
        }

        public String getTeamOne() {
            return teamOne;
        }

        public void setTeamOne(String teamOne) {
            this.teamOne = teamOne;
        }

        public String getTeamTwo() {
            return teamTwo;
        }

        public void setTeamTwo(String teamTwo) {
            this.teamTwo = teamTwo;
        }

        public String getMatchType() {
            return matchType;
        }

        public void setMatchType(String matchType) {
            this.matchType = matchType;
        }

        public String getDateTimeGMT() {
            return dateTimeGMT;
        }

        public void setDateTimeGMT(String dateTimeGMT) {
            this.dateTimeGMT = dateTimeGMT;
        }

        public boolean isSquad() {
            return squad;
        }

        public void setSquad(boolean squad) {
            this.squad = squad;
        }

        public String getTossWinnerTeam() {
            return tossWinnerTeam;
        }

        public void setTossWinnerTeam(String tossWinnerTeam) {
            this.tossWinnerTeam = tossWinnerTeam;
        }

        public String getWinnerTeam() {
            return winnerTeam;
        }

        public void setWinnerTeam(String winnerTeam) {
            this.winnerTeam = winnerTeam;
        }

        public boolean isMatchStarted() {
            return matchStarted;
        }

        public void setMatchStarted(boolean matchStarted) {
            this.matchStarted = matchStarted;
        }
    }

}

我有主要活动

 ApiInterface apiService = ApiClient.getClient().create(ApiInterface.class);

        Call<NewMatchList> apiList=apiService.getNewMatchListCallListCall(API_KEY);
        apiList.enqueue(new Callback<NewMatchList>() {
            @Override
            public void onResponse(Call<NewMatchList> call, Response<NewMatchList> response) {
                   NewMatchList  newMatchList=response.body();
                Log.d("ApiCall",response.toString());
                Log.d("ApiCall_22",newMatchList.toString());
                Toast.makeText(getApplicationContext(),"inside",Toast.LENGTH_LONG).show();
            }

            @Override
            public void onFailure(Call<NewMatchList> call, Throwable t) {
                Log.d("ApiCall_Error",t.toString());
            }
        });
    }

我有接口

public interface ApiInterface {
    @GET("matches")
    Call<NewMatchList> getNewMatchListCallListCall(@Query("apikey") String apiKey);

}

但每次在日志中我都会获得以下结果。

 com.example.project.volleyretroprofit.Model.NewMatchList@4195b478

如果我尝试访问response.body().getMatchList()那么空指针异常任何人都可以帮助我，我错了

更新

public class ApiClient {
   public static final String BASE_URL = "http://cricapi.com/api/";

    private static Retrofit retrofit = null;


    public static Retrofit getClient() {
        if (retrofit==null) {
            retrofit = new Retrofit.Builder()
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();
        }
        return retrofit;
    }
}

更新了Match.java

public class Match {

    @SerializedName("unique_id")
    @Expose
    private Integer uniqueId;
    @SerializedName("date")
    @Expose
    private String date;
    @SerializedName("team-2")
    @Expose
    private String team2;
    @SerializedName("team-1")
    @Expose
    private String team1;
    @SerializedName("type")
    @Expose
    private String type;
    @SerializedName("dateTimeGMT")
    @Expose
    private String dateTimeGMT;
    @SerializedName("squad")
    @Expose
    private Boolean squad;
    @SerializedName("toss_winner_team")
    @Expose
    private String tossWinnerTeam;
    @SerializedName("matchStarted")
    @Expose
    private Boolean matchStarted;
    @SerializedName("winner_team")
    @Expose
    private String winnerTeam;

    public Integer getUniqueId() {
        return uniqueId;
    }

    public void setUniqueId(Integer uniqueId) {
        this.uniqueId = uniqueId;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getTeam2() {
        return team2;
    }

    public void setTeam2(String team2) {
        this.team2 = team2;
    }

    public String getTeam1() {
        return team1;
    }

    public void setTeam1(String team1) {
        this.team1 = team1;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getDateTimeGMT() {
        return dateTimeGMT;
    }

    public void setDateTimeGMT(String dateTimeGMT) {
        this.dateTimeGMT = dateTimeGMT;
    }

    public Boolean getSquad() {
        return squad;
    }

    public void setSquad(Boolean squad) {
        this.squad = squad;
    }

    public String getTossWinnerTeam() {
        return tossWinnerTeam;
    }

    public void setTossWinnerTeam(String tossWinnerTeam) {
        this.tossWinnerTeam = tossWinnerTeam;
    }

    public Boolean getMatchStarted() {
        return matchStarted;
    }

    public void setMatchStarted(Boolean matchStarted) {
        this.matchStarted = matchStarted;
    }

    public String getWinnerTeam() {
        return winnerTeam;
    }

    public void setWinnerTeam(String winnerTeam) {
        this.winnerTeam = winnerTeam;
    }

}

更新了NewMatchList.java

   public class NewMatchList {

    @SerializedName("matches")
    @Expose
    List<Match> matchList;

    public NewMatchList(List<Match> matchList) {
        this.matchList = matchList;
    }

    public List<Match> getMatchList() {
        return matchList;
    }

    public void setMatchList(List<Match> matchList) {
        this.matchList = matchList;
    }

 }

Answer 1

您的密钥名称应与模型类中的成员变量名称匹配。

做这样的事情

public class NewMatchList {

@SerializedName("matches")
@Expose
List<MatchList> matchList;

public NewMatchList(List<MatchList> matchList) {
    this.matchList = matchList;
}

public List<MatchList> getMatchList() {
    return matchList;
}

public void setMatchList(List<MatchList> matchList) {
    this.matchList = matchList;
}

public class MatchList{
    @SerializedName("unique_id")
    @Expose
    private int id;
    @SerializedName("date")
    @Expose
    private String date;
    @SerializedName("team-1")
    @Expose
    private String teamOne;
    @SerializedName("team-2")
    @Expose
    private String teamTwo;
    @SerializedName("type")
    @Expose
    private String matchType;
    @SerializedName("dateTimeGMT")
    @Expose
    private String dateTimeGMT;
    @SerializedName("squad")
    @Expose
    private boolean squad;
    @SerializedName("toss_winner_team")
    @Expose
    private String tossWinnerTeam;
    @SerializedName("matchStarted")
    @Expose
    private String winnerTeam;
    @SerializedName("winner_team")
    @Expose
    private boolean matchStarted;


    public MatchList(int id, String date, String teamOne, String teamTwo, String matchType, String dateTimeGMT, boolean squad, String tossWinnerTeam, String winnerTeam, boolean matchStarted) {
        this.id = id;
        this.date = date;
        this.teamOne = teamOne;
        this.teamTwo = teamTwo;
        this.matchType = matchType;
        this.dateTimeGMT = dateTimeGMT;
        this.squad = squad;
        this.tossWinnerTeam = tossWinnerTeam;
        this.winnerTeam = winnerTeam;
        this.matchStarted = matchStarted;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getTeamOne() {
        return teamOne;
    }

    public void setTeamOne(String teamOne) {
        this.teamOne = teamOne;
    }

    public String getTeamTwo() {
        return teamTwo;
    }

    public void setTeamTwo(String teamTwo) {
        this.teamTwo = teamTwo;
    }

    public String getMatchType() {
        return matchType;
    }

    public void setMatchType(String matchType) {
        this.matchType = matchType;
    }

    public String getDateTimeGMT() {
        return dateTimeGMT;
    }

    public void setDateTimeGMT(String dateTimeGMT) {
        this.dateTimeGMT = dateTimeGMT;
    }

    public boolean isSquad() {
        return squad;
    }

    public void setSquad(boolean squad) {
        this.squad = squad;
    }

    public String getTossWinnerTeam() {
        return tossWinnerTeam;
    }

    public void setTossWinnerTeam(String tossWinnerTeam) {
        this.tossWinnerTeam = tossWinnerTeam;
    }

    public String getWinnerTeam() {
        return winnerTeam;
    }

    public void setWinnerTeam(String winnerTeam) {
        this.winnerTeam = winnerTeam;
    }

    public boolean isMatchStarted() {
        return matchStarted;
    }

    public void setMatchStarted(boolean matchStarted) {
        this.matchStarted = matchStarted;
    }
}

}

Android改造设置值为null

1 个答案: