Como enviar mensagens selecionadas usando a caixa de seleção para um determinado não?

primeiro, estou buscando todas as mensagens no meu aplicativo para serem armazenadas no listviewEstou selecionando mensagens do listview usando caixas de seleção e desejaenvie esses sms selecionados para um único número predefinido e desejause o sms selecionado como corpo da mensagem a ser enviado para o número não. mas oproblema é esse oA mensagem enviada contém mensagens completas da lista de exibição, não a selecionada. Então por favor alguémcorrija-me onde estou errado no código como eu desejoenvie apenas mensagens selecionadas e não os itens completos da lista de exibição (mensagens)

public class MainActivity extends Activity implements OnItemClickListener, OnClickListener{

Button send;
ListView listViewSMS;
Cursor cursor;
SMSListAdapter smsListAdapter;
Context context;
SharedPreferences prefs=null;
ArrayAdapter<SMSListModel> adapter;
List<SMSListModel> list = new ArrayList<SMSListModel>();
TextView textViewSMSSender, textViewSMSBody;
int i;
int count = 0;
@Override
protected void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    context=this;
    listViewSMS=(ListView)findViewById(R.id.lvSMS);

    send = (Button)findViewById(R.id.btnproperty);
    send.setOnClickListener(this);

    textViewSMSSender=(TextView)findViewById(R.id.tvSMSSend);
    textViewSMSBody=(TextView)findViewById(R.id.tvSMSBody);

    cursor = getContentResolver().query(Uri.parse("content://sms/inbox"), null, null, null, null);

    smsListAdapter = new SMSListAdapter(this,getModel());
    listViewSMS.setAdapter(smsListAdapter);
    listViewSMS.setOnItemClickListener(this);


}
@Override
public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) {
    TextView label = (TextView) v.getTag(R.id.tvSMSSend);
    CheckBox checkbox = (CheckBox) v.getTag(R.id.cbSelect);
    Toast.makeText(v.getContext(), label.getText().toString()+" "+isCheckedOrNot(checkbox), Toast.LENGTH_LONG).show();      
}

private String isCheckedOrNot(CheckBox checkbox) {
    if(checkbox.isChecked())
        return "is checked";
    else
        return "is not checked";
}

private List<SMSListModel> getModel() {

    if(cursor.getCount()>0){
        for(i=0;i<cursor.getCount();i++){
            if(cursor.moveToPosition(i)){
                list.add(new SMSListModel(cursor.getString(cursor.getColumnIndex("address")),cursor.getString(cursor.getColumnIndex("body"))));
            }
        }
    }


    return list;
}
@Override
public void onClick(View v) {



    if( v == send){
        mDialog();

    }



public void mDialog(){



     // Show The Dialog with Selected SMS 
     AlertDialog dialog = new AlertDialog.Builder(context).create();
     dialog.setTitle("Message App");
     dialog.setIcon(android.R.drawable.ic_dialog_info);
     dialog.setMessage("Count : ");
     dialog.setButton(DialogInterface.BUTTON_POSITIVE, "ok",
             new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int which) 
         {
             String phoneNo = "111";
             if(list.size()>0){
                 for(i=0;i<list.size();i++){
                     if(list.get(i).isSelected()){

                         try{
                             SmsManager smsManager = SmsManager.getDefault();
                             StringBuilder builder = new StringBuilder();
                             for(SMSListModel p: list){
                                 builder.append(p.toString());
                                 builder.append('\n');
                             }
                            String sms = builder.toString();
                             smsManager.sendTextMessage(phoneNo, null, sms, null, null);
                          Toast.makeText(getApplicationContext(), "SMS Sent!",Toast.LENGTH_LONG).show();

                         }

                         catch (Exception e){
                             Toast.makeText(getApplicationContext(),"SMS faild, please try again later!",Toast.LENGTH_LONG).show();
                             e.printStackTrace();

                         }
                         dialog.dismiss();

                 }
              }
            }
         }
     });

     dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", 
            new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(getApplicationContext(), "SMS not Sent",Toast.LENGTH_LONG).show();
                        dialog.dismiss();

                    }
                });
     dialog.show();

}
public class SMSListAdapter extends ArrayAdapter<SMSListModel> {

private final List<SMSListModel> list;
private final Activity mContext;
boolean checkAll_flag = false;
boolean checkItem_flag = false;

public SMSListAdapter(Activity context,List<SMSListModel> list) 
{
    super(context, R.layout.listview_each_item, list);
    mContext = context;
    this.list = list;
}

static class ViewHolder {
    protected TextView textAddress;
    protected TextView textBody;
    protected CheckBox checkbox;
}

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

    ViewHolder viewHolder = null;
    if (convertView == null) {
        LayoutInflater inflator = mContext.getLayoutInflater();
        convertView = inflator.inflate(R.layout.listview_each_item, null);
        viewHolder = new ViewHolder();
        viewHolder.textAddress = (TextView) convertView.findViewById(R.id.tvSMSSend);
        viewHolder.textBody = (TextView) convertView.findViewById(R.id.tvSMSBody);
        viewHolder.checkbox = (CheckBox) convertView.findViewById(R.id.cbSelect);
        viewHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        int getPosition = (Integer) buttonView.getTag();  // Here we get the position that we have set for the checkbox using setTag.
                        list.get(getPosition).setSelected(buttonView.isChecked()); // Set the value of checkbox to maintain its state.
                    }
                });
        convertView.setTag(viewHolder);
        convertView.setTag(R.id.tvSMSSend, viewHolder.textAddress);
        convertView.setTag(R.id.tvSMSBody, viewHolder.textBody);
        convertView.setTag(R.id.cbSelect, viewHolder.checkbox);
    } else {
        viewHolder = (ViewHolder) convertView.getTag();
    }
    viewHolder.checkbox.setTag(position); // This line is important.

    viewHolder.textAddress.setText(list.get(position).getAddress());
    viewHolder.textBody.setText(list.get(position).getBody());
    viewHolder.checkbox.setChecked(list.get(position).isSelected());    

    return convertView;
}
public class SMSListModel {

private String address;
String body;
private boolean selected;

public SMSListModel(String address, String body) {
    this.address = address;
    this.body = body;
}

public String getAddress() {
    return address;
}

public String getBody() {
    return body;
}

public boolean isSelected() {
    return selected;
}

public void setSelected(boolean selected) {
    this.selected = selected;
}

public String toString(){

    return body;
}}

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