在ListView中用复选框选择项目文件

Question

程序的ListView视图中设置有复选框。我想从ListView中获取选中的项目，例如：MyFiles应用程序中用复选框选择多个文件，然后点击单个删除按钮就能删除所有的文件。有什么方法实现这样的功能呢？

Answer 1

public class MyAdapter extends SimpleAdapter {
    //private List<Table> tables;
    SharedPreferences prefs;
    private Activity activity;
    String val = "";

    //@SuppressWarnings("unchecked")
    public MyAdapter(Activity context, List<? extends Map<String, String>> tables, int resource, String[] from,
            int[] to) {
        super(context, tables, resource, from, to);
        //this.tables = (List<Table>) tables;
        activity    =   context;
    }

    public View getView(final int position, final View convertView, ViewGroup parent) {
        View row = super.getView(position, convertView, parent);
        if (row == null) 
        {
            LayoutInflater inflater = (LayoutInflater) activity
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            row = inflater.inflate(R.layout.reports_list, null);
        }       

        final CheckBox cBox=(CheckBox)row.findViewById(R.id.cb1);
        if(bulkflag)
        {
            cBox.setVisibility(View.VISIBLE);
        }
        else
        {
            cBox.setVisibility(View.GONE);
        }
        cBox.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                if(cBox.isChecked())
                {
                    selectedIds.add(recIdArr.get(reportslistview.getPositionForView(cBox)));
                    //System.out.println("position "+reportslistview.getPositionForView(cBox));
                }
                else
                {
                    selectedIds.remove(recIdArr.get(reportslistview.getPositionForView(cBox)));
                }
            }
        });
        return row;
    }
}

然后检查：

for(int i=0;i<selectedIds.size();i++)
 {
    System.out.println("delete multiple"+selectedIds.size()+" "+Integer.parseInt(selectedIds.get(i)));
 }

把selectedIds声明为全局变量。

Answer 2

Listview list;

ArrayAdapter<String> aa=new ArrayAdapter<String>this,android.R.layout.simple_list_item_multiple_choice,"Arraylist name");

list.setAdapter(aa);
list.setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
     //code 
   }

Answer 3

关键是你要有一个集合来准确记录你选中的文件，删除时从集合里取出记录，调用你的删除方法就好了
代码的写法就多了
上面 nana4ever的回答是可以，应该就是那种思路，如果是4.0的系统也可以用下面这种，系统带的，也挺方便的，原理是一样的。

ListView mList = getListView();
ModeCallback multiListener = new ModeCallback();
mList.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
mList.setMultiChoiceModeListener(multiListener);

public class ModeCallback  implements ListView.MultiChoiceModeListene ｛｝

这个要实现必要的方法
.