當對話框重新打開時顯示覆選框

Question

我有一個對話框，其中有一個複選框和textview的listView。我在textView中顯示了stName Arraylist。現在我想要的是當我重新打開對話框時選擇複選框後，它應該顯示checboxes檢查。

public class StudentNameAdapter extends ArrayAdapter{ 

    Context context; 
    BaseActivity activity; 
    ArrayList<String> updatedList,studentId,studentIdUpdated; 
    ArrayList<CheckModelClass> stName; 

    public StudentNameAdapter(Context context, BaseActivity activity, ArrayList<CheckModelClass> stName, ArrayList<String> updatedList, ArrayList<String> studentId, ArrayList<String> studentIdUpdated) { 

     super(context, R.layout.student_name_listview,stName); 
     this.context = context; 
     this.stName = stName; 
     this.activity =activity; 
     this.updatedList =updatedList; 
     this.studentId = studentId; 
     this.studentIdUpdated = studentIdUpdated; 
    } 

    private static class ViewHolder { 

     CheckBox checkbox; 
     TextView text; 
    } 

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

     ViewHolder viewHolder = null; 
     if (convertView == null) { 

      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = inflater.inflate(R.layout.student_name_listview, parent, false); 

      viewHolder = new ViewHolder(); 
      viewHolder.text = (TextView) convertView.findViewById(R.id.text1); 
      viewHolder.checkbox = (CheckBox) convertView.findViewById(R.id.checkbox); 

      viewHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 

       @Override 
       public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 

        int getPosition = (Integer) buttonView.getTag(); 
        stName.get(getPosition).setSelected(buttonView.isChecked()); 
        if(isChecked){ 

         if(studentIdUpdated.contains(studentId.get(getPosition))){ 

         } 
         else{ 

          updatedList.add(stName.get(getPosition).getName()); 
          studentIdUpdated.add(studentId.get(getPosition)); 
         } 

        }else 

         { 

         updatedList.remove(stName.get(getPosition).getName()); 
         studentIdUpdated.remove(studentId.get(getPosition)); 
        } 



       } 

      }); 

      convertView.setTag(viewHolder); 
      convertView.setTag(R.id.text1, viewHolder.text); 
      convertView.setTag(R.id.checkbox, viewHolder.checkbox); 
     } 
     else { 

      viewHolder = (ViewHolder) convertView.getTag(); 
     } 

     viewHolder.checkbox.setTag(position); 

     viewHolder.text.setText(stName.get(position).getName()); 
     viewHolder.checkbox.setChecked(stName.get(position).isSelected()); 

     return convertView; 
    } 
} 

Answer 1

試試這個..

viewHolder.checkbox.setChecked(stName.get(position).isSelected()); 

    viewHolder.checkbox.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      CheckBox cb = (CheckBox) view; 

      if (cb.isChecked()) { 

        if(studentIdUpdated.contains(studentId.get(getPosition))){ 

        } 
        else{ 

         updatedList.add(stName.get(getPosition).getName()); 
         studentIdUpdated.add(studentId.get(getPosition)); 
        } 

       }else 

        { 

        updatedList.remove(stName.get(getPosition).getName()); 
        studentIdUpdated.remove(studentId.get(getPosition)); 
       } 

     } 
    });