将捆绑包从ListView传递到适配器，Android

Question

我有一个位置列表视图，我希望用户从中选择。

在他们选择一个项目后，我希望应用程序根据该位置返回特定条目。因为我想在ListView中显示一组信息，我使用的是适配器;在结果列表中，我设置为将数组作为包传递：

//when listItem is clicked
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        //in checked, in listview get Item positions for checked items
        SparseBooleanArray checked = l.getCheckedItemPositions();

        //assign selected items to new String ArrayList
        List<String> selectedItem = new ArrayList<String>();


        //determine size of items checked (number)
        for (int i = 0; i < checked.size(); i++) {
            // Item position in adapter
            position = checked.keyAt(i);
            // Add location if it is checked i.e.) == TRUE!
            if (checked.valueAt(i))
                //add selected items to madapter
                selectedItem.add(madapter.getItem(position));
        }

        //create string output array, store new string array with selected items
        String[] outputStrArr = new String[selectedItem.size()];

        for (int i = 0; i < selectedItem.size(); i++) {
            outputStrArr[i] = selectedItem.get(i);
        }

        Intent intent = new Intent(getApplicationContext(),
                CustomMidwifeAdapter.class);

        // Create a bundle object
        Bundle b = new Bundle();


        b.putStringArray("selectedItems", outputStrArr);

        // Add the bundle to the intent.
        intent.putExtras(b);

        Intent intentstart = new Intent(getApplicationContext(),
                MidwifeResultList.class);



        // start the ResultActivity
        startActivity(intentstart);


    }

正如您所看到的，我的直觉是将数据传递给适配器，因为这是我查询Parse数据的地方：

public class CustomMidwifeAdapter extends ParseQueryAdapter<ParseObject> {



      public static final String TAG = CustomMidwifeAdapter.class.getSimpleName();

        protected Context mContext;
        protected List<ParseUser> mUsers;
        protected ParseRelation<ParseObject> mMidwiferyfirm;
        protected ParseUser mCurentUser;

        Bundle b = getIntent().getExtras();

        //store selected items in array
        String[] resultArr = b.getStringArray("selectedItems");




        public CustomMidwifeAdapter(Context context)    {
            super(context, new ParseQueryAdapter.QueryFactory<ParseObject>() {
                public ParseQuery create() {

                    // Here we can configure a ParseQuery to display
                    // midwives
                    ParseQuery query = new ParseQuery("midwifefirm");
                    query.whereEqualTo("userType", "midwife");

                    return query;
                }
            });
        }

然而，我收到一个错误，无法解决方法getIntent ...我在想这是因为我无法使用它，除非在一个Activity ..我可以将它传递给我的ListActivity，但后来我不是确定如何在我的ParseQuery中使用它。

我一直在寻找答案，并且有一些参考需要使用上下文，但不确定这是否适用于我的问题。

这是我的MidwifeListActivity

public class MidwifeResultList extends ListActivity {


    public static final String TAG = MidwifeResultList.class.getSimpleName();

    private ParseQueryAdapter<ParseObject> mainAdapter;

    protected ParseRelation<ParseUser> mPatientRelation;
    protected ParseUser mCurrentUser;



    protected List<ParseObject> mMidwife;

    private CustomMidwifeAdapter midwifeListAdapter;

    //calls Adapter; Adapter manages data model
    //adapts it to individual entries in widget
    //inflates, assigns it to rows
    ArrayAdapter<String> madapter;




    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);


        //initialize main ParseQueryAdapter
        mainAdapter = new CustomMidwifeAdapter(this);

        //which keys in Midwife object
        mainAdapter.setTextKey("practicename");
        mainAdapter.setTextKey("education");
        mainAdapter.setTextKey("yearsinpractice");
        mainAdapter.setTextKey("practicephilosophy");


        mCurrentUser = ParseUser.getCurrentUser();
        mPatientRelation = mCurrentUser.getRelation(ParseConstants.KEY_PATIENT_RELATION);


        setListAdapter(mainAdapter);
        mainAdapter.loadObjects();




    }


    protected void onListItemClick (ListView l, View v, int position, long id)  {

        super.onListItemClick(l, v, position, id);


      if (getListView().isItemChecked(position)) {





          mCurrentUser.saveInBackground(new SaveCallback() {
              @Override


              public void done(ParseException e) {

                  if (e != null) {

                      Log.e(TAG, e.getMessage());
                  }

              }
          });

          Intent intent = new Intent(this, SelectedMidwife.class);
          intent.putExtra("practicename", "practicename");
          startActivity(intent);

      }

        else {
          //remove friend

      }




    }

}