Speichern der Liste der Checkboxen von Listview, die mit einem benutzerdefinierten Adapter erstellt wurden

Question

Jetzt ist das etwas, was mich schon lange beschäftigt. Aber irgendwie bin ich immer noch nicht in der Lage herauszufinden, wie man den Status der Checkboxen in einer Listenansicht speichert, die mit einem benutzerdefinierten Adapter erstellt wurde. Hier ist mein CustomAdapter. Jede Hilfe wird sehr geschätzt. Vielen Dank.

public class ListAdapter extends BaseAdapter{ 
    boolean[] itemChecked=new boolean[20]; 
    public String title[]; 
public String description[]; 
public Activity context; 
public LayoutInflater inflater; 
HttpClient ht = new DefaultHttpClient() 
public ListAdapter(Activity context,String[] title, String[] description) { 
    super(); 
    for(int i=0;i<itemChecked.length;i++) 
    { 
     itemChecked[i]=false; 
    } 
    this.context = context; 
    this.title = title; 
    this.description = description; 

this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
} 

public static class ViewHolder 
{ 

    TextView txtViewTitle; 
    TextView txtViewDescription; 
    CheckBox cb; 
} 

@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return title.length; 
} 
@Override 
public Object getItem(int position) { 
    // TODO Auto-generated method stub 
    return null; 
} 
@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return 0; 
} 
@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 
    // TODO Auto-generated method stub 
    final ViewHolder holder; 



    LayoutInflater inflater = context.getLayoutInflater(); 
    if(convertView==null) 
    { 
     convertView = inflater.inflate(R.layout.custom_list, null); 
     holder = new ViewHolder(); 
     holder.txtViewTitle = (TextView) convertView.findViewById(R.id.title_text); 
     holder.txtViewTitle.setTextColor(Color.parseColor("#008ab5")); 
     holder.txtViewDescription = (TextView) convertView.findViewById(R.id.description_text); 
     holder.txtViewDescription.setTextColor(Color.parseColor("#008ab5")); 
     holder.cb=(CheckBox) convertView.findViewById(R.id.cb); 

     convertView.setTag(holder); 

    } 

    else 
    { 
     holder=(ViewHolder)convertView.getTag(); 

    } 

    holder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 

      @Override 
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
       // TODO Auto-generated method stub 

       itemChecked[position] = isChecked; 
       if(itemChecked[position]) 
       { 
        holder.cb.setChecked(true); 
       } 
       else 
       { 
        holder.cb.setChecked(false); 
       } 

       boolean sub=isChecked; 


     } 
      }   
     }); 
boolean item[]=load(); 
    holder.txtViewTitle.setText(title[position]); 
    holder.txtViewDescription.setText(description[position]); 
    holder.cb.setChecked(item[position]); 
    holder.txtViewDescription.setFocusable(false); 
    holder.txtViewTitle.setFocusable(false); 
save(itemChecked); 
return convertView; 

} 

void subscribe(List<NameValuePair> nameValuePairs,boolean sub) 
    { 
    if(sub==true) 
    { 

      try { 
      subscription.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
      ht.execute(subscription); 
     } catch (UnsupportedEncodingException e1) { 
      // TODO Auto-generated catch block 
      e1.printStackTrace(); 
     } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

    } 
else 
{ 
    if(sub==false) 
    { 
     { 

       try { 
       unSubscription.setEntity(new  UrlEncodedFormEntity(nameValuePairs)); 
       try { 
        ht.execute(unSubscription); 
       } catch (ClientProtocolException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } catch (IOException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
      } catch (UnsupportedEncodingException e1) { 
       // TODO Auto-generated catch block 
       e1.printStackTrace(); 
      } 

     } 
} 


} 
    } 
    private void save(final boolean[] isChecked) { 
    SharedPreferences sharedPreferences = context.getPreferences(Context.MODE_PRIVATE); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    for(Integer i=0;i<isChecked.length;i++) 
    { 
     editor.putBoolean(i.toString(), isChecked[i]); 
    } 
    editor.commit(); 
    } 
    public boolean[] load() { 
    SharedPreferences sharedPreferences = context.getPreferences(Context.MODE_PRIVATE); 
     boolean [] reChecked = new boolean[itemChecked.length]; 
     for(Integer i = 0; i < itemChecked.length; i++) 
     { 
      reChecked[i] = sharedPreferences.getBoolean(i.toString(), false); 
     } 
     return reChecked; 
    } 

}

Answer 1

die Sie interessieren, statt OnCheckedChangeListener zu verwenden, nur verwendet OnClickListener:

@Override 
    public View getView(final int position, View convertView, ViewGroup arg2) { 
     // TODO Auto-generated method stub 
     final ViewHolder holder; 
     LayoutInflater inflater = ((Activity) context).getLayoutInflater(); 
     if(convertView==null) 
     { 
      convertView = inflater.inflate(R.layout.custom_list, null); 
      holder = new ViewHolder(); 

      holder.txtViewTitle = (TextView) convertView.findViewById(R.id.title_text); 

      holder.txtViewDescription = (TextView) convertView.findViewById(R.id.description_text); 

      holder.cb=(CheckBox) convertView.findViewById(R.id.cb); 

      convertView.setTag(holder); 

     } 

     else 
     { 
      holder=(ViewHolder)convertView.getTag(); 

     } 

     holder.txtViewTitle.setTextColor(Color.parseColor("#008ab5")); 
     holder.txtViewTitle..setText(title[position]); 
     holder.txtViewDescription.setTextColor(Color.parseColor("#008ab5")); 
     holder.txtViewDescription.setText(description[position]); 
     if (itemChecked[position]) 
       holder.cb.setChecked(true); 
     else 
       holder.cb.setChecked(false); 

     holder.cb.setOnClickListener(new OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        // TODO Auto-generated method stub 
        if (holder.cb.isChecked()) 
         itemChecked[position] = true; 
        else 
         itemChecked[position] = false; 
       }   
     }); 
     return convertView; 

    } 

Answer 2

Sie können versuchen, diese:

holder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 

     @Override 
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
      // TODO Auto-generated method stub 

      itemChecked[position] = isChecked; 
      if(itemChecked[position]) 
      { 
       holder.cb.setChecked(true); 
      } 
      else 
      { 
       holder.cb.setChecked(false); 
      } 

      boolean sub=isChecked; 

      ***save(itemChecked);*** 
     } 
});