Android 每次我试图显示Json响应时，都会在我的卡片视图中重复相同的元素（改装）

我的JSON响应以一个JSON数组开始，其中进一步包含三个数组。我想在我的卡片视图中显示这些数组的内容。似乎在每个循环中，我总是更改相同的ViewHolder，因此结果总是最后一个循环的最后一项。

onBindViewHolder

中的

int i

指示将显示的项目的位置

[
   {
"firstTeam_VS_secondTeam": [{
    "match_id": "248036",
    "country_id": "169",
    "country_name": "England",
    "league_id": "70",
    "league_name": "Capital One Cup",
    "match_date": "2018-01-24",
    "match_status": "FT",
    "match_time": "21:00",
    "match_hometeam_name": "Arsenal",
    "match_hometeam_score": "2",
    "match_awayteam_name": "Chelsea",
    "match_awayteam_score": "1",
    "match_hometeam_halftime_score": "1",
    "match_awayteam_halftime_score": "1",
    "match_live": "1"
},
.....
],"firstTeam_lastResults": [{
    "match_id": "248036",
    "country_id": "169",
    "country_name": "England",
    "league_id": "70",
    "league_name": "Capital One Cup",
    "match_date": "2018-01-24",
    "match_status": "FT",
    "match_time": "21:00",
    "match_hometeam_name": "Arsenal",
    "match_hometeam_score": "2",
    "match_awayteam_name": "Chelsea",
    "match_awayteam_score": "1",
    "match_hometeam_halftime_score": "1",
    "match_awayteam_halftime_score": "1",
    "match_live": "1"
},
.....
],  "secondTeam_lastResults": [{
    "match_id": "248036",
    "country_id": "169",
    "country_name": "England",
    "league_id": "70",
    "league_name": "Capital One Cup",
    "match_date": "2018-01-24",
    "match_status": "FT",
    "match_time": "21:00",
    "match_hometeam_name": "Arsenal",
    "match_hometeam_score": "2",
    "match_awayteam_name": "Chelsea",
    "match_awayteam_score": "1",
    "match_hometeam_halftime_score": "1",
    "match_awayteam_halftime_score": "1",
    "match_live": "1"
},
.....
]

我的

Onbindviewholder

类，我尝试了此代码，但它在我的所有卡片视图中显示了相同的详细信息集

@Override
public void onBindViewHolder(@NonNull footballmatchadapter.ViewHolder viewHolder, int i) {
    List<FirstTeamVSSecondTeam> firstTeamVSSecondTeams;
    List<FirstTeamLastResult> firstTeamLastResults;
    List<SecondTeamLastResult> secondTeamLastResults;
    firstTeamVSSecondTeams=post.getFirstTeamVSSecondTeam();
    firstTeamLastResults=post.getFirstTeamLastResults();
    secondTeamLastResults=post.getSecondTeamLastResults();
    viewHolder.tvleague.setText(firstTeamVSSecondTeams.size());
    viewHolder.tvhometeamscore.setText(firstTeamLastResults.size());
    viewHolder.tvdate.setText(secondTeamLastResults.size());
    if(post.getFirstTeamVSSecondTeam()!=null) {
        firstTeamVSSecondTeams = post.getFirstTeamVSSecondTeam();
    }
    if(post.getFirstTeamLastResults()!=null) {
        firstTeamLastResults = post.getFirstTeamLastResults();

    }
    if(post.getSecondTeamLastResults()!=null) {
        secondTeamLastResults = post.getSecondTeamLastResults();
    }
    String leauge="",date="",team1="",team2="",team1score="",team2score="";
    if(firstTeamVSSecondTeams!=null)
    {
        for(FirstTeamVSSecondTeam 
       firstTeamVSSecondTeam:firstTeamVSSecondTeams)
        {
            leauge=firstTeamVSSecondTeam.getLeagueName();
            date="Match Date "+firstTeamVSSecondTeam.getMatchDate();
            team1="Home Team "+firstTeamVSSecondTeam.getMatchHometeamName();
            team2="Second Team 
      "+firstTeamVSSecondTeam.getMatchAwayteamName();
            team1score=firstTeamVSSecondTeam.getMatchHometeamName()+" : 
      "+firstTeamVSSecondTeam.getMatchHometeamScore();
            team2score=firstTeamVSSecondTeam.getMatchAwayteamName()+" : 
       "+firstTeamVSSecondTeam.getMatchAwayteamScore();
            viewHolder.tvleague.setText(leauge);
            viewHolder.tvdate.setText(date);
            viewHolder.tvhometownteam.setText(team1);
            viewHolder.tvawayteam.setText(team2);
            viewHolder.tvhometeamscore.setText(team1score);
            viewHolder.tvawayteamscore.setText(team2score);

        }
    }
    if(firstTeamLastResults!=null)
    {
        for(FirstTeamLastResult firstTeamLastResult:firstTeamLastResults)
        {
            leauge=firstTeamLastResult.getLeagueName();
            date="Match Date "+firstTeamLastResult.getMatchDate();
            team1="Home Team "+firstTeamLastResult.getMatchHometeamName();
            team2="Second Team "+firstTeamLastResult.getMatchAwayteamName();
            team1score=firstTeamLastResult.getMatchHometeamName()+" : 
           "+firstTeamLastResult.getMatchHometeamScore();
            team2score=firstTeamLastResult.getMatchAwayteamName()+" : 
             "+firstTeamLastResult.getMatchAwayteamScore();
            viewHolder.tvleague.setText(leauge);
            viewHolder.tvdate.setText(date);
            viewHolder.tvhometownteam.setText(team1);
            viewHolder.tvawayteam.setText(team2);
            viewHolder.tvhometeamscore.setText(team1score);
            viewHolder.tvawayteamscore.setText(team2score);

        }
    }
    if(secondTeamLastResults!=null)
    {
        for(SecondTeamLastResult SecondTeamLastResult:secondTeamLastResults)
        {
            leauge=SecondTeamLastResult.getLeagueName();
            date="Match Date "+SecondTeamLastResult.getMatchDate();
            team1="Home Team "+SecondTeamLastResult.getMatchHometeamName();
            team2="Second Team 
     "+SecondTeamLastResult.getMatchAwayteamName();
            team1score=SecondTeamLastResult.getMatchHometeamName()+" : 
     "+SecondTeamLastResult.getMatchHometeamScore();
            team2score=SecondTeamLastResult.getMatchAwayteamName()+" : 
      "+SecondTeamLastResult.getMatchAwayteamScore();
            viewHolder.tvleague.setText(leauge);
            viewHolder.tvdate.setText(date);
            viewHolder.tvhometownteam.setText(team1);
            viewHolder.tvawayteam.setText(team2);
            viewHolder.tvhometeamscore.setText(team1score);
            viewHolder.tvawayteamscore.setText(team2score);

        }
    }
}

---

首先，似乎每个结果列表都不需要不同的类。您应该创建一个类，如：

public class MatchResults {
    @SerializedName("match_id")
    private long matchId;

    @SerializedName("country_id")
    private long countryId;

    @SerializedName("country_name")
    private String countryName;
    ...
}

您的适配器应该如下所示：

public class FootballMatchAdapter extends RecyclerView.Adapter<FootballMatchAdapter.ViewHolder> {

    private List<MatchResults> firstTeamVSSecondTeams;
        private List<MatchResults> firstTeamLastResults;
        private List<MatchResults> secondTeamLastResults;

    public FootbalMatchAdapter() {
        loadData();
    }

    private void loadData() {
        firstTeamVSSecondTeams = post.getFirstTeamVSSecondTeam();
        firstTeamLastResults = post.getFirstTeamLastResults();
        secondTeamLastResults = post.getSecondTeamLastResults();
    }

    private int getFirstTeamVSSecondTeamsSize() {
        return (firstTeamVSSecondTeams != null ? 
                firstTeamVSSecondTeams.size() : 0); 
    }

    private int getFirstTeamLastResultsSize() {
        return (firstTeamLastResults != null ? 
                firstTeamLastResults.size() : 0); 
    }

    private int getSecondTeamLastResultsSize() {
        return (secondTeamLastResults != null ? 
                secondTeamLastResults.size() : 0); 
    }

    @Override
    public int getItemCount() {
        return getFirstTeamVSSecondTeamsSize() 
        + getFirstTeamLastResultsSize()
        + getSecondTeamLastResultsSize();
    }

    private MatchResults getItem(int i) {
        if (i < 0 || i > getItemCount())
            return null;
        if (i >= (getFirstTeamVSSecondTeamsSize() + getFirstTeamLastResultsSize())) {
            int pos = i - (getFirstTeamVSSecondTeamsSize() + getFirstTeamLastResultsSize());
            return secondTeamLastResults.get(pos);
        }
        else if (i >= getFirstTeamVSSecondTeamsSize()) {
            int pos = i - getFirstTeamVSSecondTeamsSize();
            return firstTeamLastResults.get(pos);
        }
        else {
            return firstTeamVSSecondTeams.get(i);
        }
    }

    @Override
    public FootballMatchAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        ... 
    }

    @Override
    public void onBindViewHolder(@NonNull footballmatchadapter.ViewHolder 
        viewHolder, int i) {

        String leauge = "", date = "", team1 = "", team2 = "", team1score = "", team2score = "";
        MatchResult result = getItem(i);

        leauge = firstTeamVSSecondTeam.getLeagueName();
        date = "Match Date " + firstTeamVSSecondTeam.getMatchDate();
        team1 = "Home Team " + firstTeamVSSecondTeam.getMatchHometeamName();
        team2 = "Second Team " + firstTeamVSSecondTeam.getMatchAwayteamName();
        team1score = firstTeamVSSecondTeam.getMatchHometeamName() + " : "+firstTeamVSSecondTeam.getMatchHometeamScore();
        team2score = firstTeamVSSecondTeam.getMatchAwayteamName() + " : "+firstTeamVSSecondTeam.getMatchAwayteamScore();

        viewHolder.tvleague.setText(leauge);
        viewHolder.tvdate.setText(date);
        viewHolder.tvhometownteam.setText(team1);
        viewHolder.tvawayteam.setText(team2);
        viewHolder.tvhometeamscore.setText(team1score);
        viewHolder.tvawayteamscore.setText(team2score);
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        ...
    }
}

public类FootballMatchAdapter扩展了RecyclerView.Adapter{
私人名单第一队VS第二队；
私有列表firstTeamLastResults；
私有列表结果；
公共足球俱乐部{
loadData（）；
}
私有void loadData（）{
firstTeamVSSecondTeams=post.getFirstTeamVSSecondTeam（）；
firstTeamLastResults=post.getFirstTeamLastResults（）；
secondTeamLastResults=post.getSecondTeamLastResults（）；
}
private int getFirstTeamVSSecondTeamsSize（）函数{
return（firstTeamVSSecondTeams！=null？
firstTeamVSSecondTeams.size（）：0）；
}
private int getFirstTeamLastResultsSize（）{
返回（firstTeamLastResults！=null？
firstTeamLastResults.size（）：0）；
}
private int getSecondTeamLastResultsSize（）{
返回（secondTeamLastResults！=空？
secondTeamLastResults.size（）：0）；
}
@凌驾
public int getItemCount（）{
返回getFirstTeamVSSecondTeamsSize（）
+getFirstTeamLastResultsSize（）
+getSecondTeamLastResultsSize（）；
}
私有匹配结果getItem（int i）{
if（i<0 | | i>getItemCount（））
返回null；
如果（i>=（getFirstTeamVSSecondTeamsSize（）+getFirstTeamLastResultsSize（））{
int pos=i-（getFirstTeamVSSecondTeamsSize（）+getFirstTeamLastResultsSize（））；
返回secondTeamLastResults.get（pos）；
}
如果（i>=getFirstTeamVSSecondTeamsSize（）），则为else{
int pos=i-getFirstTeamVSSecondTeamsSize（）；
返回firstTeamLastResults.get（pos）；
}
否则{
返回firstTeamVSSecondTeams.get（i）；
}
}
@凌驾
public Football MatchAdapter.ViewHolder onCreateViewHolder（视图组父级，int-viewType）{
... 
}
@凌驾
BindViewHolder（@NonNull footballmatchadapter.ViewHolder）上的公共无效
视窗夹，int i）{
字符串leauge=“”，date=“”，team1=“”，team2=“”，team1score=“”，team2score=“”；
MatchResult结果=getItem（i）；
leauge=firstTeamVSSecondTeam.getLeagueName（）；
date=“Match date”+firstTeamVSSecondTeam.getMatchDate（）；
team1=“主队”+firstTeamVSSecondTeam.getMatchHometeamName（）；
team2=“Second Team”+firstTeamVSSecondTeam.getMatchAwayteamName（）；
team1score=firstTeamVSSecondTeam.getMatchHometeamName（）+“：”+firstTeamVSSecondTeam.getMatchHometeamScore（）；
team2score=firstTeamVSSecondTeam.getMatchAwayteamName（）+“：“+firstTeamVSSecondTeam.getMatchAwayteamScore（）；
viewHolder.tvleague.setText（leauge）；
viewHolder.tvdate.setText（日期）；
viewHolder.tvhometownsteam.setText（team1）；
viewHolder.tvawaytam.setText（team2）；
viewHolder.tvhometeamscore.setText（team1score）；
viewHolder.tvawayteamscore.setText（team2score）；
}
公共静态类ViewHolder扩展了RecyclerView.ViewHolder{
...
}
}

我没有运行这段代码，所以可能有一些错误

public class FootballMatchAdapter extends RecyclerView.Adapter<FootballMatchAdapter.ViewHolder> {

    private List<MatchResults> firstTeamVSSecondTeams;
        private List<MatchResults> firstTeamLastResults;
        private List<MatchResults> secondTeamLastResults;

    public FootbalMatchAdapter() {
        loadData();
    }

    private void loadData() {
        firstTeamVSSecondTeams = post.getFirstTeamVSSecondTeam();
        firstTeamLastResults = post.getFirstTeamLastResults();
        secondTeamLastResults = post.getSecondTeamLastResults();
    }

    private int getFirstTeamVSSecondTeamsSize() {
        return (firstTeamVSSecondTeams != null ? 
                firstTeamVSSecondTeams.size() : 0); 
    }

    private int getFirstTeamLastResultsSize() {
        return (firstTeamLastResults != null ? 
                firstTeamLastResults.size() : 0); 
    }

    private int getSecondTeamLastResultsSize() {
        return (secondTeamLastResults != null ? 
                secondTeamLastResults.size() : 0); 
    }

    @Override
    public int getItemCount() {
        return getFirstTeamVSSecondTeamsSize() 
        + getFirstTeamLastResultsSize()
        + getSecondTeamLastResultsSize();
    }

    private MatchResults getItem(int i) {
        if (i < 0 || i > getItemCount())
            return null;
        if (i >= (getFirstTeamVSSecondTeamsSize() + getFirstTeamLastResultsSize())) {
            int pos = i - (getFirstTeamVSSecondTeamsSize() + getFirstTeamLastResultsSize());
            return secondTeamLastResults.get(pos);
        }
        else if (i >= getFirstTeamVSSecondTeamsSize()) {
            int pos = i - getFirstTeamVSSecondTeamsSize();
            return firstTeamLastResults.get(pos);
        }
        else {
            return firstTeamVSSecondTeams.get(i);
        }
    }

    @Override
    public FootballMatchAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        ... 
    }

    @Override
    public void onBindViewHolder(@NonNull footballmatchadapter.ViewHolder 
        viewHolder, int i) {

        String leauge = "", date = "", team1 = "", team2 = "", team1score = "", team2score = "";
        MatchResult result = getItem(i);

        leauge = firstTeamVSSecondTeam.getLeagueName();
        date = "Match Date " + firstTeamVSSecondTeam.getMatchDate();
        team1 = "Home Team " + firstTeamVSSecondTeam.getMatchHometeamName();
        team2 = "Second Team " + firstTeamVSSecondTeam.getMatchAwayteamName();
        team1score = firstTeamVSSecondTeam.getMatchHometeamName() + " : "+firstTeamVSSecondTeam.getMatchHometeamScore();
        team2score = firstTeamVSSecondTeam.getMatchAwayteamName() + " : "+firstTeamVSSecondTeam.getMatchAwayteamScore();

        viewHolder.tvleague.setText(leauge);
        viewHolder.tvdate.setText(date);
        viewHolder.tvhometownteam.setText(team1);
        viewHolder.tvawayteam.setText(team2);
        viewHolder.tvhometeamscore.setText(team1score);
        viewHolder.tvawayteamscore.setText(team2score);
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        ...
    }
}