将自定义适配器中的复选框范围扩展到活动

Question

我试图从我创建的自定义适配器中获取复选框的范围。我在适配器中有三个文本字段以及一个复选框，其可见性已设置为不可见..我已实现了一个要删除的上下文菜单转发和回复..所以......每当我点击删除上下文菜单项...复选框将显示，我将能够通过选择它删除多个项目..

这是我用于创建自定义适配器的listview行xml ...

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/list_normal_selector" >
<TextView
        android:id="@+id/Sug_Sender_Name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Sender Name" 
        android:layout_marginLeft="5dp"
        android:layout_marginTop="5dp"/>

<TextView
    android:id="@+id/Sug_Sent_time"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/Sug_Sender_Name"
    android:layout_alignBottom="@+id/Sug_Sender_Name"
    android:layout_alignParentRight="true"
    android:layout_marginRight="17dp"
    android:text="Time" />

<TextView
    android:id="@+id/Sug_Sent_Topic_Display"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="5dp"
    android:layout_alignLeft="@+id/Sug_Sender_Name"
    android:layout_below="@+id/Sug_Sender_Name"
    android:text="Subject :" />

<TextView
    android:id="@+id/Sug_Sent_Topic"
    android:layout_width="175dp"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/Sug_Sent_Topic_Display"
    android:layout_alignBottom="@+id/Sug_Sent_Topic_Display"
    android:layout_marginLeft="8dp"
    android:singleLine="true"
    android:layout_toRightOf="@+id/Sug_Sent_Topic_Display"
    android:text="Topic" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/Sug_Sent_Topic_Display"
    android:layout_marginTop="5dp"
    android:layout_marginLeft="5dp"
    android:text="Details :" />

<TextView
    android:id="@+id/Sug_Sent_Details"
    android:layout_width="175dp"
    android:layout_height="wrap_content"
    android:singleLine="true"
    android:layout_alignBaseline="@+id/textView1"
    android:layout_alignBottom="@+id/textView1"
    android:layout_alignLeft="@+id/Sug_Sent_Topic"
    android:text="Details" />

<CheckBox
    android:id="@+id/suggestion_checkbox"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/Sug_Sent_Details"
    android:layout_alignLeft="@+id/Sug_Sent_time"
    android:visibility="invisible"/>

</RelativeLayout>

Plz帮助家伙...我想在按下“删除”项目时显示复选框。提前谢谢

以下是自定义适配器的代码..

public class SuggestionsListAdapter extends BaseAdapter 
{
    Context ctx;
    ArrayList<SuggestionMessage> suggestion_list;
    LayoutInflater inflater=null;
    SuggestionHolder sug_holder=null;
     Calendar cal = Calendar.getInstance();
     DateFormat date_formatter = java.text.DateFormat.getDateInstance(DateFormat.DEFAULT);
    public SuggestionsListAdapter(Context ctx,ArrayList<SuggestionMessage> suggestion_list)
    {
        super();
        this.ctx = ctx;
        this.suggestion_list = suggestion_list;
        inflater=(LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }


    public class SuggestionHolder
    {
        TextView sug_name,sug_time,sug_topic,sug_details;
        CheckBox suggestion_select_box;
    }


    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return suggestion_list.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return suggestion_list.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) 
    {
        // TODO Auto-generated method stub
        if(convertView==null)
        {
            convertView=inflater.inflate(R.layout.suggestion_row_layout, parent, false);
            sug_holder=new SuggestionHolder();
            sug_holder.sug_name=(TextView) convertView.findViewById(R.id.Sug_Sender_Name);
            sug_holder.sug_time=(TextView) convertView.findViewById(R.id.Sug_Sent_time);
            sug_holder.sug_topic=(TextView) convertView.findViewById(R.id.Sug_Sent_Topic);
            sug_holder.sug_details=(TextView) convertView.findViewById(R.id.Sug_Sent_Details);
            sug_holder.suggestion_select_box=(CheckBox) convertView.findViewById(R.id.suggestion_checkbox);

            sug_holder.suggestion_select_box.setOnCheckedChangeListener(new OnCheckedChangeListener() {

                @Override
                public void onCheckedChanged(CompoundButton view, boolean isChecked)
                {
                    // TODO Auto-generated method stub
                    int pos=(Integer)view.getTag();
                    suggestion_list.get(pos).setSelected(view.isChecked());
                }
            });

            convertView.setTag(sug_holder);
        }
        else
        {
            sug_holder=(SuggestionHolder) convertView.getTag();
        }

        SuggestionMessage suggestion=(SuggestionMessage) getItem(position);
        sug_holder.sug_name.setText("Sender"+suggestion.getFirst_name()+" "+suggestion.getLast_name());
        sug_holder.sug_topic.setText(suggestion.getSuggestion_topic());
        sug_holder.sug_details.setText(suggestion.getSuggestion_details());

        try {
            Date temp_date=date_formatter.parse(suggestion.getSuggestion_date());

            if(cal.getTime()==temp_date)
            {
                sug_holder.sug_time.setText(suggestion.getSuggestion_time());
            }
            else
            {
                sug_holder.sug_time.setText(suggestion.getSuggestion_date());
            }

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

        sug_holder.suggestion_select_box.setTag(position);
        sug_holder.suggestion_select_box.setChecked(suggestion.isSelected());

        return convertView;
    }