¿Por qué el ListView repitió cada 6to artículo?

Question

Tengo un ListView que se llena con un Adaptador personalizado con un Diseño específico. El Adaptador se asigna a un HashMap con los Elementos específicos que contienen los Datos para cada Elemento ListView.

Los datos en hashMap son correctos, pero el ListView se repite para dibujar cada 6'to los mismos elementos 6'th nuevamente, hasta que llega al final del mapa?

Mi pantalla le permite mostrar 5 elementos, si arrastra un litte son 6 elementos.

Aquí está el Código del Adaptador, el Código relevante de ListActivity y el archivo de diseño del ListView.

Por favor, ayuda, no tengo idea de por qué sucede esto.

package de.View; 

import java.util.ArrayList; 
import java.util.Map; 

import de.carSync.R; 
import de.Common.Date_Conversion; 
import de.Common.GUI_Output; 
import de.Model.DriversLog.Fahrt; 
import de.Model.DriversLog.Geladene_Fahrten; 

import android.content.Context; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.TextView; 

public class Fahrten_List_Adapter extends BaseAdapter{ 

    private static String TAG = "Fahrten_List_Adapter"; 

    private Map<Integer,Fahrt> fahrten_Liste; 

    private final LayoutInflater mLayoutInflater; 

    int zeilen_Layout; 

    public Fahrten_List_Adapter(Context ctx, Map<Integer,Fahrt> f_l, int zeilen_Layout){ 
     this.zeilen_Layout = zeilen_Layout; 
     fahrten_Liste = f_l; 
     mLayoutInflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

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

    @Override 
    public Object getItem(int pos) { 
     return fahrten_Liste.get(pos); 
    } 

    @Override 
    public long getItemId(int pos) { 
     return 0; 
    } 

    public void clear(){ 
     fahrten_Liste.clear(); 
    } 

    @Override 
    public View getView(int pos, View convertView, ViewGroup parent) { 

     if(convertView == null){ 
      convertView = mLayoutInflater.inflate(zeilen_Layout, null); 

      Log.v(TAG,"getView :" + pos); 

      ((TextView) convertView.findViewById(R.id.FahrtID)).setText((String) ((Fahrt) getItem(pos)).get_Fahrt_ID()); 

      ((TextView) convertView.findViewById(R.id.Kennzeichen)).setText((String) ((Fahrt) getItem(pos)).get_Kennzeichen()); 

      ((TextView) convertView.findViewById(R.id.Abfahrts_Strasse)).setText((String) ((Fahrt) getItem(pos)).get_Abfahrts_Strasse().toString()); 

      ((TextView) convertView.findViewById(R.id.Ankunfts_Strasse)).setText((String) ((Fahrt) getItem(pos)).get_Ankunfts_Strasse().toString()); 

      ((TextView) convertView.findViewById(R.id.Fahrttyp)).setText((String) GUI_Output.get_Fahrttyp((Object) ((Fahrt) getItem(pos)).get_Fahrttyp())); 

      ((TextView) convertView.findViewById(R.id.Abfahrts_Stadt)).setText((String) ((Fahrt) getItem(pos)).get_Abfahrts_Stadt().toString()); 

      ((TextView) convertView.findViewById(R.id.Ankunfts_Stadt)).setText((String) ((Fahrt) getItem(pos)).get_Ankunfts_Stadt().toString()); 

      ((TextView) convertView.findViewById(R.id.Dauer)).setText((String) ((Fahrt) getItem(pos)).get_Fahrt_Dauer().toString()); 

      ((TextView) convertView.findViewById(R.id.Abfahrts_Zeit2)).setText((String) Date_Conversion.get_GUI_Date( ((Fahrt) getItem(pos)).get_Abfahrtszeit_Date())); 

      ((TextView) convertView.findViewById(R.id.Ankunfts_Zeit2)).setText((String) Date_Conversion.get_GUI_Date( ((Fahrt) getItem(pos)).get_Ankunftszeit_Date())); 

      ((TextView) convertView.findViewById(R.id.Entfernung)).setText((String) ((Fahrt) getItem(pos)).get_Fahrt_Entferung().toString()); 

      ((TextView) convertView.findViewById(R.id.Abfahrts_Km)).setText((String) ((Fahrt) getItem(pos)).get_Abfahrt_km().toString()); 

      ((TextView) convertView.findViewById(R.id.Ankunfts_Km)).setText((String) ((Fahrt) getItem(pos)).get_Ankunfts_km().toString()); 

     //} 


    } 
     return convertView; 


    } 

} 

---

package de.View; 

import java.io.IOException; 
import java.io.UnsupportedEncodingException; 
import java.net.URISyntaxException; 
import java.util.Stack; 

import org.json.JSONException; 

import de.carSync.R; 
import de.Controler.Drivers_Log_Controller; 
import de.Controler.Global_Controller; 
import android.app.Activity; 
import android.app.ListActivity; 
import android.content.Context; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.LayoutInflater; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.View.OnClickListener; 
import android.widget.AbsListView; 
import android.widget.Button; 
import android.widget.ListAdapter; 
import android.widget.ListView; 
import android.widget.Toast; 

public class Drivers_Log_View extends ListActivity implements AbsListView.OnScrollListener { 

    Drivers_Log_Controller d_l_c; 

    Fahrten_List_Adapter f_l_a_ohne_Auswahl; 


    ListView view_ohne_auswahl; 


    static String TAG = "Drivers_Log_View"; 

    /** Called when the activity is first created. */ 
    @SuppressWarnings("unchecked") 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     this.d_l_c = (Drivers_Log_Controller) Global_Controller.get_Controller_Map().get("actual d_l_c"); 

     this.setContentView(R.layout.list_view); 


     try { 
      d_l_c.lade_Standard_Fahrten(null);    
     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (URISyntaxException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     Log.v(TAG, "now creating Fahrten_List_Adapter"); 
     f_l_a_ohne_Auswahl = new Fahrten_List_Adapter(this, d_l_c.get_Fahrten(), R.layout.fahrt_linear_ohne_auswahl); 
     this.setListAdapter(f_l_a_ohne_Auswahl); 
     d_l_c.listAdapter = this.getListAdapter(); 

     ListView lv = this.getListView(); 

     lv.setOnScrollListener(this); 

     //addListeners(); 

    } 

    public void init() { 
     // 
    } 

    public Drivers_Log_Controller get_D_L_C() { 
     return this.d_l_c; 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.fahrtenbuch_menue_bar, menu); 
     Log.v(TAG, "Do I get here"); 
     return true; 
    } 

    @Override 
    public void onListItemClick(ListView l, View v, int position, long id) { 
     Log.v(TAG, "ListView Position :" + position); 
     super.onListItemClick(l, v, position, id); 
     Global_Controller.start_Fahrt(position); 
    } 

    @SuppressWarnings("unchecked") 
    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 

     case R.id.fahrtenbuch: { 

      try { 
       d_l_c.lade_Standard_Fahrten(null); 
      } catch (JSONException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (URISyntaxException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
      this.setListAdapter(d_l_c.get_List_Adapter()); 

     } 
      break; 

     case R.id.unv_Fahrten: { 

      try { 
       d_l_c.lade_Unvollstaendige_Fahrten(null); 
      } catch (JSONException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
      this.setListAdapter(d_l_c.get_List_Adapter()); 

     } 
      break; 

     case R.id.filter: { 
      Global_Controller.start_Filter(); 
      break; 
     } 

     case R.id.zusammenfassen: { 
      Log.v(TAG, "Menu --- Zusammenfassen"); 
      Global_Controller.start_Zusammenfassen(); 
     } 
      break; 

     } 
     return true; 
    } 

    @Override 
    public void onScroll(AbsListView arg0, int firstVisible, int visibleCount, 
      int totalCount) { 
     Log.v(TAG, "firstVisible :" + firstVisible); 
     Log.v(TAG, "visibleCount :" + visibleCount); 
     Log.v(TAG, "totalCount :" + totalCount); 

     boolean endReached = firstVisible + visibleCount >= totalCount; 

     if (endReached) { 
      try { 
       Log.v(TAG, "EndReached"); 

       d_l_c.nachladen_Fahrten(totalCount); 

      } catch (Exception e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
     } 

    } 

    @Override 
    public void onScrollStateChanged(AbsListView arg0, int arg1) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onResume() { 
     super.onResume(); 
     this.setListAdapter(d_l_c.get_List_Adapter()); 
     Log.v(TAG, "OnResume"); 
    } 



} 

---

<?xml version="1.0" encoding="utf-8" ?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> 
    <ListView android:id="@android:id/list" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FFFFFF" android:divider="#000000" android:dividerHeight="3px" android:cacheColorHint="#FFFFFF" /> 
    <TextView android:id="@android:id/empty" android:text="nix da...." android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FFFFFF" android:divider="#000000" android:dividerHeight="3px" android:cacheColorHint="#FFFFFF" /> 
    </LinearLayout> 

Answer 1

@Override 
public View getView(int pos, View convertView, ViewGroup parent) { 

    if(convertView == null){ 
     convertView = mLayoutInflater.inflate(zeilen_Layout, null); 

     //Assignment code 
    } 
    return convertView; 
} 

La razón de que esto está sucediendo es debido a lo que ha definido este método (que es getView()). Solo modifica el objeto convertView si es null, pero después de que se llene la primera página de elementos, Android comenzará reciclando los objetos Ver. Esto significa que, es decir, el séptimo que se pasa en no es nulo - es el objeto que se desplazó desde la parte superior de la pantalla anteriormente (el primer elemento).

Las causas condicionales simplemente devuelven lo que se pasó al método, por lo que parece repetir los mismos 6 elementos una y otra vez.

Answer 2

que Modificar getView del adaptador de la lista de la siguiente manera:

ViewHolder viewHolder = new ViewHolder(); 

@Override 
public View getView(int pos, View convertView, ViewGroup parent) { 


    if(convertView == null){ 
     convertView = mLayoutInflater.inflate(zeilen_Layout, null); 

     viewHolder.txtTestText = (TextView) findViewById(R.id.txt_test_item); 


     // Main code goes here 

     convertView.setTag(viewHolder); // this function remember the the view you have inflated 

    }else{ 
     viewHolder = (ViewHolder) convertView.getTag(); // return last set view of ith item 
    } 


    // set data to view here 

    viewHolder.txtTestText.setText(listItem.get(postion).getSelectedItem()); 

    return convertView; 

} 




private class ViewHolder { 
    TextView txtTestText; 
} 

Answer 3

Aquí está mi solución de verificación Multi en una vista de lista

un ListView normales dentro de cualquier xml

<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content"> 
    <ListView 
     android:id="@+id/lv_lay_yoklamaal" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content"></ListView> 
</LinearLayout> 

el elemento xml de listview que necesitaba en la clase de adaptador parece escuchar esto

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 
    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="60dp" 
     android:layout_marginTop="2dp" 
     android:orientation="horizontal" 
     android:paddingLeft="10dp"> 
     <LinearLayout 
      android:layout_width="50dp" 
      android:layout_height="match_parent" 
      android:background="@drawable/cw_full_oval" 
      android:gravity="center"> 
      <LinearLayout 
       android:layout_width="35dp" 
       android:layout_height="35dp" 
       android:gravity="center"> 
       <TextView 
        android:id="@+id/txt_item_yoklamaal_id" 
        android:layout_width="40dp" 
        android:layout_height="40dp" 
        android:background="@drawable/cw_full_oval" 
        android:gravity="center" 
        android:text="1" 
        android:textSize="25dp" 
        android:textStyle="bold"> 
       </TextView> 
      </LinearLayout> 
     </LinearLayout> 
     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:orientation="vertical"> 
      <TextView 
       android:id="@+id/txt_item_yoklamaal_name" 
       android:layout_width="match_parent" 
       android:layout_height="0dp" 
       android:layout_weight="1" 
       android:gravity="center|start" 
       android:paddingLeft="15dp" 
       android:text="Ahmet Kemal Bali"> 
      </TextView> 
      <LinearLayout 
       android:layout_width="match_parent" 
       android:layout_height="0dp" 
       android:layout_weight="1" 
       android:orientation="horizontal" 
       android:paddingLeft="8dp"> 
       <CheckBox 
        android:id="@+id/rb_item_yoklamaal_var" 
        android:layout_width="0dp" 
        android:layout_height="match_parent" 
        android:layout_weight="1" 
        android:text="Var" /> 
       <CheckBox 
        android:id="@+id/rb_item_yoklamaal_yok" 
        android:layout_width="0dp" 
        android:layout_height="match_parent" 
        android:layout_weight="1" 
        android:text="Yok" /> 
       <CheckBox 
        android:id="@+id/rb_item_yoklamaal_izinli" 
        android:layout_width="0dp" 
        android:layout_height="match_parent" 
        android:layout_weight="1" 
        android:text="İzinli" /> 
       <CheckBox 
        android:id="@+id/rb_item_yoklamaal_gorevli" 
        android:layout_width="0dp" 
        android:layout_height="match_parent" 
        android:layout_weight="1" 
        android:text="Görevli" /> 
      </LinearLayout> 
     </LinearLayout> 
    </LinearLayout> 
</LinearLayout> 

La actividad en la que yo llamo Listview y el adaptador

public class YoklamaAlActivity extends Activity { 

    private ListView lv_yoklama; 
    private List<TalebeModel> alltalebe; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.lay_yoklamaal); 


     lv_yoklama = (ListView) findViewById(R.id.lv_lay_yoklamaal); 


     List<TalebeModel> talabList = getAlltalebe(); 
     YoklamaAlAdapter yoklamaAdapter = new YoklamaAlAdapter(YoklamaAlActivity.this, talabList); 
     lv_yoklama.setAdapter(yoklamaAdapter); 


    } 

    public List<TalebeModel> getAlltalebe() { 

     List<TalebeModel> modelList = new ArrayList<>(); 
     modelList.add(new TalebeModel(1, "Samir Samedov",false,false,false,false)); 
     modelList.add(new TalebeModel(2, "Ahmet Kemal Bali",false,false,false,false)); 
     modelList.add(new TalebeModel(3, "Nurullah Atik",false,false,false,false)); 

     modelList.add(new TalebeModel(4, "Samir Samedov",false,false,false,false)); 
     modelList.add(new TalebeModel(5, "Ahmet Kemal Bali",false,false,false,false)); 
     modelList.add(new TalebeModel(6, "Nurullah Atik",false,false,false,false)); 

     modelList.add(new TalebeModel(7, "Samir Samedov",false,false,false,false)); 
     modelList.add(new TalebeModel(8, "Ahmet Kemal Bali",false,false,false,false)); 
     modelList.add(new TalebeModel(9, "Nurullah Atik",false,false,false,false)); 

     modelList.add(new TalebeModel(7, "Samir Samedov",false,false,false,false)); 
     modelList.add(new TalebeModel(8, "Ahmet Kemal Bali",false,false,false,false)); 
     modelList.add(new TalebeModel(9, "Nurullah Atik",false,false,false,false)); 

     modelList.add(new TalebeModel(7, "Samir Samedov",false,false,false,false)); 
     modelList.add(new TalebeModel(8, "Ahmet Kemal Bali",false,false,false,false)); 
     modelList.add(new TalebeModel(9, "Nurullah Atik",false,false,false,false)); 


     return modelList; 
    } 
} 

la clase del modelo (establecer su captador de campo y setters)

public class TalebeModel { 
    private int numara; 
    private String ad; 
    private boolean var; 
    private boolean yok; 
    private boolean izinli; 
    private boolean gorevli; 


    public TalebeModel() { 
    } 

    public TalebeModel(int numara, String ad) { 
     this.numara = numara; 
     this.ad = ad; 
    } 

    public TalebeModel(int numara, String ad, boolean var, boolean yok, boolean izinli, boolean gorevli) { 
     this.numara = numara; 
     this.ad = ad; 
     this.var = var; 
     this.yok = yok; 
     this.izinli = izinli; 
     this.gorevli = gorevli; 
    } 
} 

Y finnaly la clase adaptador

/** 
* Created by Samir on 24.1.2017. 
*/ 
public class YoklamaAlAdapter extends BaseAdapter { 

    Context context; 
    List<TalebeModel> talebeList; 
    ViewHolder holder; 
    ArrayList<Boolean> checked; 

    int displaySize; 

    public YoklamaAlAdapter(Context contextt, List<TalebeModel> talebeModels) { 
     this.context = contextt; 
     this.talebeList = talebeModels; 
     displaySize = 10; 

    } 

    private class ViewHolder { 
     TextView mName; 
     TextView mId; 
     TextView mVar; 
     TextView mYok; 
     ImageView mIzinli; 
     TextView mGorevli; 
     LinearLayout lin_lay_etkinlik; 

     CheckBox rbVar; 
     CheckBox rbYok; 
     CheckBox rbIzinli; 
     CheckBox rbGorevli; 
    } 

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

    /* @Override 
    public int getViewTypeCount() { 

     return getCount(); 
    }*/ 

    @Override 
    public TalebeModel getItem(int i) { 
     return talebeList.get(i); 
    } 

    @Override 
    public long getItemId(int i) { 
     return 0; 
    } 

    @Override 
    public View getView(final int i, View view, ViewGroup viewGroup) { 
     holder = new ViewHolder(); 
     final TalebeModel currentTalebe; 
     LayoutInflater mInflater = (LayoutInflater) 
       context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE); 

     if (view == null) { 
      view = mInflater.inflate(R.layout.item_yoklamaal, null); 
      holder = new ViewHolder(); 
      holder.mName = (TextView) view.findViewById(R.id.txt_item_yoklamaal_name); 
      holder.mId = (TextView) view.findViewById(R.id.txt_item_yoklamaal_id); 
      holder.rbVar = (CheckBox) view.findViewById(R.id.rb_item_yoklamaal_var); 
      holder.rbYok = (CheckBox) view.findViewById(R.id.rb_item_yoklamaal_yok); 
      holder.rbIzinli = (CheckBox) view.findViewById(R.id.rb_item_yoklamaal_izinli); 
      holder.rbGorevli = (CheckBox) view.findViewById(R.id.rb_item_yoklamaal_gorevli); 

      view.setTag(holder); 
     } else { 
      holder = (ViewHolder) view.getTag(); 
     } 

     currentTalebe = getItem(i); 
     holder.mName.setText(currentTalebe.getAd()); 
     holder.mId.setText("" + currentTalebe.getNumara()); 

     holder.rbVar.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       holder.rbYok.clearFocus(); 
       if (currentTalebe.isVar()) { 
        currentTalebe.setVar(false); 
        // holder.rbVar.setChecked(false); 
        //Toast.makeText(context, "Var a tıkladın", Toast.LENGTH_SHORT).show(); 
        holder.rbYok.setChecked(false); 
        holder.rbIzinli.setChecked(false); 
        holder.rbGorevli.setChecked(false); 
       } else { 
        //holder.rbVar.setChecked(true); 
        currentTalebe.setVar(true); 
        holder.rbYok.setChecked(false); 
        holder.rbIzinli.setChecked(true); 
        holder.rbGorevli.setChecked(true); 
       } 
       currentTalebe.setYok(false); 
       currentTalebe.setIzinli(false); 
       currentTalebe.setGorevli(false); 
      } 
     }); 
     setCheckboxesChecked(currentTalebe); 

     holder.rbYok.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (currentTalebe.isYok()) { 
        currentTalebe.setYok(false); 

       } else { 
        currentTalebe.setYok(true); 
       } 
       currentTalebe.setVar(false); 
       currentTalebe.setIzinli(false); 
       currentTalebe.setGorevli(false); 
      } 
     }); 
     setCheckboxesChecked(currentTalebe); 

     holder.rbGorevli.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (currentTalebe.isGorevli()) { 
        currentTalebe.setGorevli(false); 
       } else { 
        currentTalebe.setGorevli(true); 
       } 
       currentTalebe.setVar(false); 
       currentTalebe.setYok(false); 
       currentTalebe.setIzinli(false); 
      } 
     }); 

     setCheckboxesChecked(currentTalebe); 

     holder.rbIzinli.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (currentTalebe.isIzinli()) { 
        currentTalebe.setIzinli(false); 
       } else { 
        currentTalebe.setIzinli(true); 
       } 
       currentTalebe.setVar(false); 
       currentTalebe.setYok(false); 
       currentTalebe.setGorevli(false); 
      } 
     }); 
     setCheckboxesChecked(currentTalebe); 

     return view; 
    } 

    /*@Override 
    public boolean isEnabled(int position) { 
     return mListItem[position].isEnabled(); 
    }*/ 

    private void setCheckboxesChecked(TalebeModel currentTalebe) { 
     holder.rbVar.setChecked(currentTalebe.isVar()); 
     holder.rbYok.setChecked(currentTalebe.isYok()); 
     holder.rbIzinli.setChecked(currentTalebe.isIzinli()); 
     holder.rbGorevli.setChecked(currentTalebe.isGorevli()); 
    } 
} 

Esto es realmente un dolor de cabeza y nadie da ninguna solución lógica, es por eso que he compartido todo mi trabajo con este tema