Jak wyświetlić określoną treść CSV na pozycji z kliknięciami?

Question

Próbuję wyświetlić określoną zawartość CSV na pozycji z kliknięciami, ale przy moim bieżącym kodzie mogę wyświetlić tylko cały plik CSV. Tutaj, na przykład, kiedy klikam na poziomie 2, wyświetlana jest cała lista CVS, ale staram się tutaj tylko pokazać elementy poziomu 2 pliku CSV.

To jest mój pierwszy widok:

To jest widok dostaję gdy poziom 2 kliknięcia:

Ale tutaj, elementy Poziom 1 CSV są również wyświetlane, jak mogę wyświetlać tylko elementy poziomu 2? A kiedy kliknięto "Poziom 1", jak wyświetlić tylko elementy poziomu 1? etc ...

MainActivity.java

public class MainActivity extends ListActivity { 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    // storing string resources into Array 
    // R.array.levels is in list_levels.xml 
    String[] levels = getResources().getStringArray(R.array.levels); 

    // Binding resources Array to ListAdapter 

    this.setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, R.id.label_level, levels)); 

    ListView lv = getListView(); 

    // listening to single list item on click 
    lv.setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView<?> parent, View view, 
           int position, long id) { 

      // selected item 
      String list = ((TextView) view).getText().toString(); 

      // Launching new Activity on selecting single List Item 
      Intent i = new Intent(getApplicationContext(), SingleListItem.class); 
      // sending data to new activity 
      i.putExtra("list", list); 
      startActivity(i); 
     } 
    }); 
} 

}

Oto mój plik CSVFile.java

public class CSVFile { 
    InputStream inputStream; 

    public CSVFile(InputStream inputStream){ 
     this.inputStream = inputStream; 
    } 

    public List<String[]> read(){ 
     List<String[]> resultList = new ArrayList<String[]>(); 
     BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); 
     try { 
      String csvLine; 
      while ((csvLine = reader.readLine()) != null) { 
       String[] row = csvLine.split(","); 
       resultList.add(row); 
      } 
     } 
     catch (IOException ex) { 
      throw new RuntimeException("Error in reading CSV file: "+ex); 
     } 
     finally { 
      try { 
       inputStream.close(); 
      } 
      catch (IOException e) { 
       throw new RuntimeException("Error while closing input stream: "+e); 
      } 
     } 
     return resultList; 
    } 
} 

Moja ItemArrayAdapter.java klasa

public class ItemArrayAdapter extends ArrayAdapter<String[]> { 
    private List<String[]> stimuliList = new ArrayList<String[]>(); 

    static class ItemViewHolder { 
     TextView level_number; 
     TextView stimuli_name; 
    } 

    public ItemArrayAdapter(Context context, int textViewResourceId) { 
     super(context, textViewResourceId); 
    } 

    @Override 
    public void add(String[] object) { 
     stimuliList.add(object); 
     super.add(object); 
    } 

    @Override 
    public int getCount() { 
     return this.stimuliList.size(); 
    } 

    @Override 
    public String[] getItem(int index) { 
     return this.stimuliList.get(index); 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     View row = convertView; 
     ItemViewHolder viewHolder; 
     if (row == null) { 
      LayoutInflater inflater = (LayoutInflater) this.getContext(). 
        getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      row = inflater.inflate(R.layout.single_list_item_view, parent, false); 
      viewHolder = new ItemViewHolder(); 
      viewHolder.level_number = (TextView) row.findViewById(R.id.level_number); 
      viewHolder.stimuli_name = (TextView) row.findViewById(R.id.stimuli_name); 
      row.setTag(viewHolder); 
     } else { 
      viewHolder = (ItemViewHolder)row.getTag(); 
     } 
     String[] stat = getItem(position); 
     viewHolder.level_number.setText(stat[0]); 
     viewHolder.stimuli_name.setText(stat[1]); 
     return row; 
    } 
} 

SingleListItem.java

public class SingleListItem extends Activity{ 

    private ListView listView; 
private ItemArrayAdapter itemArrayAdapter; 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 


     super.onCreate(savedInstanceState); 
     this.setContentView(R.layout.single_list_item_view); 


     TextView txtList = (TextView) findViewById(R.id.list_label); 

     Intent i = getIntent(); 
     // getting attached intent data 
     String list = i.getStringExtra("list"); 
     // displaying selected list name 
     txtList.setText(list); 


     listView = (ListView) findViewById(R.id.stimuli_list); 
     itemArrayAdapter = new ItemArrayAdapter(getApplicationContext(), R.layout.single_list_item_view); 

     Parcelable state = listView.onSaveInstanceState(); 
     listView.setAdapter(itemArrayAdapter); 
     listView.onRestoreInstanceState(state); 

     InputStream inputStream = getResources().openRawResource(R.raw.stimulis); 
     CSVFile csvFile = new CSVFile(inputStream); 
     List<String[]> stimuliList = csvFile.read(); 

     for(String[] stimuliData:stimuliList) { 
      itemArrayAdapter.add(stimuliData); 
     } 

    } 
} 

I wreszcie, szybkie widok z mojego pliku CSV, stimulis.csv

level 1,feu 
level 1,fête 
level 2,blanc 
level 2,blague 
... 

Czy to możliwe?

Answer 1

Obawiam się, że nie jest to możliwe.