Positionen der Ansicht in einer benutzerdefinierten ListView wiederholt sich

Question

Ich verwendete CustomListAdapter-Klasse, die Basisadapter erweitert. Ich habe eine Schaltfläche in jeder Ansicht der Listenansicht. Wenn ich auf die Schaltfläche lecke, sollte ein Text gedruckt werden. Alles funktioniert gut, außer dass der Text auch in einer anderen Ansicht gedruckt wird. Ich habe viele ähnliche Fragen gefunden, aber keine exakte Lösung.

public class CustomListAdapter extends BaseAdapter { 

List<HashMap<String, Object>> models; 
Context context; 
LayoutInflater inflater; 

    ImageView pic,image,delam; 
TextView name,timestamp,msg,url,idas,idas2; 
ArrayList<String> listItems; 

public int count1 = 0; 
ProgressDialog pDialog; 
//String session_email="",session_type="",share_app,share_via; 
private String stringVal; 
private int mCounter1=1; 
private int counter=0; 
public int temp=0; 
String con, pros; 
private int[] counters; 
int pos; 
int width,height; 
Transformation transformation; 
//ImageButton sharingButton; 
String pacm,session_email; 
int i ; 
ImageButton like; 
ImageButton share; 
JSONParser jsonParser = new JSONParser(); 
static String IP = IpAddress.Ip; 
//url to create new product 
public static String add_wish = IP+"/studio/add_wishlist.php"; 
    private static String url_all_propertiesdel = IP+"/studio/getdelete_all_agent.php"; 

    boolean isSelected; 
    int a,a1,b,b1; 

    //private static final String TAG_SUCCESS1 = "mass"; 
    private static final String TAG_USER = "users"; 

    private static final String TAG_PRO = "properties"; 
    //private static final String TAG_PRO1 = "properties1"; 
    // products JSONArray 
    JSONArray users = null; 
    //JSONArray users1 = null; 
    View view; 

    // JSON Node names 
    private static final String TAG_SUCCESS = "success"; 
SharedPreferences sPref; 
// int position; 


public CustomListAdapter(Context context, List<HashMap<String, Object>> models) { 
    this.context = context; 
    this. models = models; 
    inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    this.counters = new int[30]; 

    //this.session_email = sPref.getString("SESSION_UID",""); 

} 

public class ViewHolder { 

     public TextView countt; 


     public ImageButton like,share; 


    } 

public void clear(){ 
    if(models!=null) 
     models.clear(); 
} 

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

public HashMap<String, Object> getItem(int position) { 
    return models.get(position); 

} 

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

@Override 
public int getItemViewType(int position) { 
    // TODO Auto-generated method stub 
    return position; 
} 

@Override 
public int getViewTypeCount() { 
    // TODO Auto-generated method stub 
    return 1; 
} 

@Override 
public View getView(int position, final View convertView, ViewGroup parent) { 
     // view = null; 
     view = convertView; 

      ViewHolder viewHolder; 

     pos = getItemViewType(position); 
     // long posn = getItemId(position); 
    // final int paps= (int)posn ; 
     if (view == null) { 
      viewHolder = new ViewHolder(); 
      view = inflater.inflate(R.layout.fragment_home2, parent, false); 
      //your code 

      //add below code after (end of) your code 
      viewHolder.like=(ImageButton)view.findViewById(R.id.likem); 
      viewHolder.share=(ImageButton)view.findViewById(R.id.share); 

      viewHolder.like.setTag(position); 
      // viewHolder.share.setTag(position); 

      /* viewHolder.share.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 

        HashMap<String, Object> item = models.get(position); 
          Intent share = new Intent(Intent.ACTION_SEND); 

          // If you want to share a png image only, you can do: 
          // setType("image/png"); OR for jpeg: setType("image/jpeg"); 
          share.setType("image/*"); 

          // Make sure you put example png image named myImage.png in your 
          // directory 
          String imagePath = Environment.getExternalStorageDirectory() 
            + "/108.png"; 

          String imagePath = (String)item.get("IMAGE"); 

          Toast.makeText(context, imagePath, Toast.LENGTH_LONG).show(); 

          File imageFileToShare = new File(imagePath); 

          Uri uri = Uri.fromFile(imageFileToShare); 
          share.putExtra(Intent.EXTRA_STREAM, uri); 

          context.startActivity(Intent.createChooser(share, "Share Image!")); 



       } 


      });*/ 


      // viewHolder.share.setOnItemClickListener(this); 

      viewHolder.like.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        int position = (Integer) v.getTag(); 
        // viewHolder.countt = (TextView) v.findViewById(R.id.count); 
        HashMap<String, Object> item = models.get(position); 
        isSelected = (Boolean) item.get("selected"); 
        item.put("selected", !isSelected); 
        notifyDataSetChanged(); 




       } 
      }); 
     } else { 
      viewHolder = (ViewHolder) view.getTag(); 
     } 




    final HashMap<String, Object> item = getItem(position); 



    // like = (ImageView) view.findViewById(R.id.like); 
    //sharingButton = (ImageButton) view.findViewById(R.id.share); 

    // final HashMap<String, Object> item1 = getItem(position); 
    isSelected = (Boolean) item.get("selected"); 

    if (isSelected) { 

     viewHolder.like.setBackgroundResource(R.drawable.checked); 
    } else { 
     viewHolder.like.setBackgroundResource(R.drawable.unchecked); 
    } 


    pic = (ImageView) view.findViewById(R.id.profilePic); 
    name = (TextView) view.findViewById(R.id.name); 
    idas = (TextView) view.findViewById(R.id.hpid); 
    idas2 = (TextView) view.findViewById(R.id.hpid2); 
    timestamp = (TextView) view.findViewById(R.id.timestamp); 
    msg = (TextView) view.findViewById(R.id.txtStatusMsg); 
    url = (TextView) view.findViewById(R.id.txtUrl); 
    image = (ImageView) view.findViewById(R.id.feedImage1); 
    //countt =(TextView)view.findViewById(R.id.count); 
    /*if any exception raises please use 
     locationTitle.setText(((String)item.get(“NAME�?))); 
     use this technique for the Image also. 
    */ 
    //holder.like.setText(item.get(item)); 
    //like.setText((String) item.get(R.id.like)); 
    idas.setText((CharSequence) item.get("UIDAS")); 
    // listItems.add(idas.getText().toString()); 
    name.setText((CharSequence) item.get("NAME")); 
    timestamp.setText((CharSequence) item.get("TIME")); 
    msg.setText((CharSequence) item.get("MSG")); 
    url.setText((CharSequence) item.get("URL")); 









    //countt.setText((CharSequence) item.get("COUN")); 
    //count.setText("" + count1); 


    int w = image.getWidth(); 
    int h = image.getHeight(); 

    if (w > 1000) 
    { 
      a=w-1000; 
      b=w-a; 
    } 

    else 
    { 
     b=w; 
    } 


    if (h > 1000) 
    { 
      a1=h-1000; 
      b1=h-a1; 
    } 

    else 
    { 
     b1=h; 
    } 

     Picasso.with(context) 
     //.load("PIC") 
    .load((String)item.get("PIC")) 
     .placeholder(R.drawable.profile_dummy) 
     //.error(R.drawable.ic_whats_hot) 
     .resize(50, 50) 
    //   .centerCrop() 
     // .fit() 
     .into(pic); 



     /*Display display = getActivity().getWindowManager().getDefaultDisplay(); 
     Point size = new Point(); 
     display.getSize(size); 
     int width = size.x;*/ 



    Picasso.with(context) 
    .load((String)item.get("IMAGE")) 

    //.load("IMAGE") 
    // .placeholder(R.drawable.ic_pages) 
    //.error(R.drawable.ic_home) 
    .resize(1000,b1) 
    .onlyScaleDown() 
    //.centerCrop() 
// .fit().centerInside() 
    .into(image); 



    /*if ((image).length() < 0) 
     { 
      //image.setVisibility(View.VISIBLE); 
      // invalid = true; 
     idas2.setText(1); 
      // Toast.makeText(getApplicationContext(), "hgghghghjgh", Toast.LENGTH_LONG).show(); 

     }*/ 





    /* delam.setOnClickListener(
       new OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         Integer index = (Integer) v.getTag(); 
         // pacm = idas.getText().toString(); 

         listItems.remove(index.intValue()); 
         notifyDataSetChanged(); 
        } 
       } 

       ); 
    */ 







    /* 
    delam.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 


      pacm = idas.getText().toString(); 
      removeItemFromList(); 

     } 


    }); 
        */  



    /* like.setTag(position); 

    like.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
      // int p = (Integer)v.getTag(); 
       //int p; 
      //int posit=(Integer)v.getTag(); 
       //String s = view[position]; 
       //Context get = null; 
       //Toast.makeText(context, String.valueOf(p) , Toast.LENGTH_LONG).show(); 
       //like.setBackgroundResource(R.drawable.checked); 

       if(viewHolder.like.isSelected()){ 
        viewHolder.like.setSelected(false); 
        //ctv.setBackgroundColor (Color.parseColor("#ffffff")); 
        viewHolder.like.setBackgroundResource(R.drawable.unchecked); 


       }else if(! viewHolder.like.isSelected()){ 
        viewHolder.like.setSelected(true); 
         //ctv.setBackgroundColor (Color.parseColor("#d2d0d0")); 
        viewHolder.like.setBackgroundResource(R.drawable.checked); 



        } 

      } 


     });*/ 


    return view; 
    } 



// HashMap<String, Object> item = models.get(position); 





} 

Answer 1

Nun versuchen Sie dies in Ihrer HashMap Liste Sie ein haben brauchen mehr Artikel selected genannt Status zu speichern ausgewählte Zeile

@Override 
public View getView(int position, final View convertView, ViewGroup parent) { 
    //your code 

    if (view == null) { 
     viewHolder = new ViewHolder(); 
     //your code 

     //add below code after (end of) your code 
     viewHolder.like.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       int position = (int) v.getTag(); 
       HashMap<String, Object> item = models.get(position); 
       boolean isSelected = (boolean) item.get("selected"); 
       item.put("selected", !isSelected); 
       notifyDataSetChanged(); 
      } 
     }); 
    } else { 
     viewHolder = (ViewHolder) view.getTag(); 
    } 

    //updated 
    viewHolder.like.setTag(position); 

    final HashMap<String, Object> item = getItem(position); 
    boolean isSelected = (boolean) item.get("selected"); 

    if (isSelected) { 
     viewHolder.like.setBackgroundResource(R.drawable.checked); 
    } else { 
     viewHolder.like.setBackgroundResource(R.drawable.unchecked); 
    } 

    //your other code 
} 

Happy_Coding;

Answer 2

Dieses Problem ist aufgrund des Recyclings von Viewholder-Objekt in Ihrem ListView über ConvertView. Machen Sie keine Logik basierend auf dem Ansichtszustand, da derselbe Zustand an ein anderes Element von ListView übergeben werden kann, wo es angezeigt werden soll. Was also zu tun? Halten Sie Ihren Status auf Ihrem Datenelement. Und verwenden Sie notify dataSetChanged, wenn Sie auf ein Element klicken, dessen Hintergrund nicht direkt geändert wird.

Sie können hier Beispiel sehen. Diese eine ID für RecyclerView Adapter, aber das Konzept ist das gleiche. RecyclerView causes issue when recycling