Java 如何在每次单击listview时在SharedReferences中创建新的SharedReferences？

我正在尝试进行MainActivity

listview。项目单击

至

SecondActivity

其中也是listview。但是无论我单击的

main活动列表视图

项目中有哪些项目，它总是在

SecondActivity

中打开相同的

listview

。我想在单击不同的

listview时始终打开新的
listview
。项目单击
main活动中的

private void savePlayerListToSharedpreference(ArrayList<Teams> playerList) {
    String jsonPlayer = gson.toJson(playerList);
    sharedPreference.savePlayersList(jsonPlayer);
}

private void getPlayerListFromSharedPreference() {
    String jsonPlayer = sharedPreference.getPlayersList();
    Type type = new TypeToken<List<Teams>>(){}.getType();
    playerList = gson.fromJson(jsonPlayer, type);
    if (playerList == null) {
        playerList = new ArrayList<>();
    }
}

public void onGettingDataListener() {
    if (playerList.size() == 0) {
        Toast.makeText(TeamSelectMenu.this, "No data in sharedPreferences", Toast.LENGTH_SHORT).show();
    } else {
        getPlayerListFromSharedPreference(); 
        PlayersListViewAdapter adapter = new PlayersListViewAdapter(TeamSelectMenu.this, R.layout.team_list, playerList);
        listView.setAdapter(adapter);
    }
}

SharedPreferences

public class TeamSharedPreferences {
private SharedPreferences pref;
private SharedPreferences.Editor editor;
// Context
private Context _context;

// Shared pref mode
int PRIVATE_MODE = 0;

private static final String PREF_NAME = "pref";
private static final String TEAMS = "teams";
private static final String PLAYERS = "players";


public TeamSharedPreferences(Context context) {
    this._context = context;
    pref = _context.getSharedPreferences(PREF_NAME, PRIVATE_MODE);
    editor = pref.edit();
}

public void saveTeamsList(String scoreString) {
    editor.putString(TEAMS, scoreString);
    editor.commit();
}

public String getTeamsList() {
    return pref.getString(TEAMS, "");
}

public void savePlayersList(String playerString) {
    editor.putString(PLAYERS, playerString);
    editor.commit();
}
public String getPlayersList() {
    return pref.getString(PLAYERS, "");
}
}

main活动列表单击查看

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
           @Override
           public void onItemClick(AdapterView<?> parent, View view, int position, long id)
 {

                Intent intent;
                    Teams entry = (Teams) parent.getItemAtPosition(position);
                    intent = new Intent(TeamMenu.this, TeamSelectMenu.class);
                    intent.putExtra("team_id", entry.getTeamName());
                    startActivity(intent);
}

它仍然始终打开相同的
listview

SharedReferences
保存我的
SecondActivity

private void savePlayerListToSharedpreference(ArrayList<Teams> playerList) {
    String jsonPlayer = gson.toJson(playerList);
    sharedPreference.savePlayersList(jsonPlayer);
}

private void getPlayerListFromSharedPreference() {
    String jsonPlayer = sharedPreference.getPlayersList();
    Type type = new TypeToken<List<Teams>>(){}.getType();
    playerList = gson.fromJson(jsonPlayer, type);
    if (playerList == null) {
        playerList = new ArrayList<>();
    }
}

public void onGettingDataListener() {
    if (playerList.size() == 0) {
        Toast.makeText(TeamSelectMenu.this, "No data in sharedPreferences", Toast.LENGTH_SHORT).show();
    } else {
        getPlayerListFromSharedPreference(); 
        PlayersListViewAdapter adapter = new PlayersListViewAdapter(TeamSelectMenu.this, R.layout.team_list, playerList);
        listView.setAdapter(adapter);
    }
}

SharedPreferences

public class TeamSharedPreferences {
private SharedPreferences pref;
private SharedPreferences.Editor editor;
// Context
private Context _context;

// Shared pref mode
int PRIVATE_MODE = 0;

private static final String PREF_NAME = "pref";
private static final String TEAMS = "teams";
private static final String PLAYERS = "players";


public TeamSharedPreferences(Context context) {
    this._context = context;
    pref = _context.getSharedPreferences(PREF_NAME, PRIVATE_MODE);
    editor = pref.edit();
}

public void saveTeamsList(String scoreString) {
    editor.putString(TEAMS, scoreString);
    editor.commit();
}

public String getTeamsList() {
    return pref.getString(TEAMS, "");
}

public void savePlayersList(String playerString) {
    editor.putString(PLAYERS, playerString);
    editor.commit();
}
public String getPlayersList() {
    return pref.getString(PLAYERS, "");
}
}

在这里，我将其设置在我的
listview
上的
SecondActivity

private void savePlayerListToSharedpreference(ArrayList<Teams> playerList) {
    String jsonPlayer = gson.toJson(playerList);
    sharedPreference.savePlayersList(jsonPlayer);
}

private void getPlayerListFromSharedPreference() {
    String jsonPlayer = sharedPreference.getPlayersList();
    Type type = new TypeToken<List<Teams>>(){}.getType();
    playerList = gson.fromJson(jsonPlayer, type);
    if (playerList == null) {
        playerList = new ArrayList<>();
    }
}

public void onGettingDataListener() {
    if (playerList.size() == 0) {
        Toast.makeText(TeamSelectMenu.this, "No data in sharedPreferences", Toast.LENGTH_SHORT).show();
    } else {
        getPlayerListFromSharedPreference(); 
        PlayersListViewAdapter adapter = new PlayersListViewAdapter(TeamSelectMenu.this, R.layout.team_list, playerList);
        listView.setAdapter(adapter);
    }
}

SharedPreferences

public class TeamSharedPreferences {
private SharedPreferences pref;
private SharedPreferences.Editor editor;
// Context
private Context _context;

// Shared pref mode
int PRIVATE_MODE = 0;

private static final String PREF_NAME = "pref";
private static final String TEAMS = "teams";
private static final String PLAYERS = "players";


public TeamSharedPreferences(Context context) {
    this._context = context;
    pref = _context.getSharedPreferences(PREF_NAME, PRIVATE_MODE);
    editor = pref.edit();
}

public void saveTeamsList(String scoreString) {
    editor.putString(TEAMS, scoreString);
    editor.commit();
}

public String getTeamsList() {
    return pref.getString(TEAMS, "");
}

public void savePlayersList(String playerString) {
    editor.putString(PLAYERS, playerString);
    editor.commit();
}
public String getPlayersList() {
    return pref.getString(PLAYERS, "");
}
}

ArrayAdapter

public class TeamListViewAdapter extends ArrayAdapter<Teams> {

private Activity activity;

public TeamListViewAdapter(Activity activity, int resource, List<Teams> teams) {
    super(activity, resource, teams);
    this.activity = activity;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {


    ViewHolder holder = null;
    LayoutInflater inflater = (LayoutInflater) activity
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    // If holder not exist then locate all view from UI file.
    if (convertView == null) {
        // inflate UI from XML file
        convertView = inflater.inflate(R.layout.team_list, parent, false);
        // get all UI view
        holder = new ViewHolder(convertView);
        // set tag for holder
        convertView.setTag(holder);
    } else {
        // if holder created, get tag from view
        holder = (ViewHolder) convertView.getTag();
    }
    Teams teams = getItem(position);
    holder.teamName.setText(teams.getTeamName());
    return convertView;
}
private static class ViewHolder {
    private TextView teamName;
    //private TextView playerNames;

    public ViewHolder(View v) {
        teamName = (TextView) v.findViewById(R.id.teamList);
    }
}}

公共类TeamListViewAdapter扩展了ArrayAdapter{
私人活动；
公共团队列表视图适配器（活动、int资源、列表团队）{
超级（活动、资源、团队）；
这个。活动=活动；
}
@凌驾
公共视图getView（int位置、视图转换视图、视图组父视图）{
ViewHolder=null；
LayoutFlater充气机=（LayoutFlater）活动
.getSystemService（活动.布局\充气机\服务）；
//如果持有者不存在，则从UI文件中查找所有视图。
if（convertView==null）{
//从XML文件膨胀UI
convertView=充气机。充气（R.layout.team_列表，父项，false）；
//获取所有UI视图
支架=新的视图支架（convertView）；
//为支架设置标签
convertView.setTag（支架）；
}否则{
//如果创建了保持架，则从视图中获取标记
holder=（ViewHolder）convertView.getTag（）；
}
团队=获取项目（位置）；
holder.teamName.setText（teams.getTeamName（））；
返回视图；
}
私有静态类视图持有者{
私有文本视图团队名称；
//私有文本视图播放器名称；
公共视图持有者（视图v）{
teamName=（TextView）v.findViewById（R.id.teamList）；
}
}}
playerList是什么类型的，其中存储了什么类型的项目？我忘记了，它是：private ArrayList playerList@LeoAsoAlright，你能发布GetPlayerList和getTeamsList的输出吗，就像JSON字符串一样？Teamlist JSON是：[{“teamName”：“Rymä1”}，{“teamName”：“Rymä2”}]，playerList是：[{“playerName”：“Pelaaja1”}，{“playerName”：“Pelaaja2”}]。我不能100%确定在哪里找到它，但这是我用debugger创建的。我自己用opendialog从按钮点击中创建这些列表