Question

我正在使用this教程。我有一个带有单选按钮的列表视图。当我点击列表视图值时，所有单选按钮都会更改已检查。我需要单一选择模式，并在单击提交按钮时检查单选按钮列表值。这是我的onpostexecute

  protected void onPostExecute(JSONObject file_url) {
            // dismiss the dialog after getting all albums
            Log.d("Arraylist: ", "> " + AddressList);

            pDialog.dismiss();
            // updating UI from Background Thread
            runOnUiThread(new Runnable() {
                public void run() {
                    /**
                     * Updating parsed JSON data into ListView
                     * */
                   if(!AddressList.isEmpty())
                   {
                final ListAdapter adapterlist = new SimpleAdapter(
                            PlaceEnquiryActivity.this, AddressList,
                            R.layout.addressscreenlist, new String[] { ADDRESS,
                                    CITY, STATE, COUNTRY }, new int[] {R.id.address,
                                    R.id.city, R.id.state, R.id.country});

                    // updating listview
                    setListAdapter(adapterlist);

这是活动中的listview onclick功能

  final ListView lv = getListView();
        lv.setItemsCanFocus(false);
        lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        lv.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) {
            RadioButton rb = (RadioButton) v.findViewById(R.id.rb_Choice);
            if (!rb.isChecked()) //OFF->ON
            {
            for (HashMap<String, String> m:AddressList) //clean previous selected

                rb.setChecked(true);
            //lv.getAdapter().notifyDatasetChanged();
            }
            }        
            });

Answer 1

你犯了错误 for（HashMap m：AddressList）//清除之前选择的

            rb.setChecked(true);
        //lv.getAdapter().notifyDatasetChanged();
        }

使用已检查但未检查的条件。如果未选中，则将其选中。不要使用for循环进行setchecked（true）

Listview与来自服务器的radiobutton

1 个答案: