如何在 ListFragment 中获取 Listview 的检查事件

Question

我有一个 JSONArray，它将数据添加到 list = new ArrayList<HashMap<String, String>>();

列表显示工作正常。数据接收和显示完美。

但是当我为其添加一个复选框时，该复选框将不起作用。我检查了一些教程都使用了 ListFragment 但它在我的不工作。

代码：

    @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {

            rootView = inflater.inflate(R.layout.fragment_list, container, false);

            // Hashmap for ListView
            list = new ArrayList<HashMap<String, String>>();

            listview = (ListView) rootView.findViewById( R.id.list );  

            // When item is tapped, toggle checked properties of CheckBox and Planet.  
            listview .setOnItemClickListener(new AdapterView.OnItemClickListener() {  
              @Override  
              public void onItemClick( AdapterView<?> parent, View item,   
                                       int position, long id) {  
                .......
              }  
            });  


            return rootView;

        }

        class LoadMatches extends AsyncTask<String, String, String> {
            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                pDialog = new ProgressDialog(getActivity());
                pDialog.setMessage("Loading Matches..");
                pDialog.setIndeterminate(false);
                pDialog.setCancelable(false);
                pDialog.show();
            }

            @Override
            protected String doInBackground(String... arg0) {
                new ArrayList<NameValuePair>();
                new DefaultHttpClient(new BasicHttpParams());
                DefaultHttpClient defaultClient = new DefaultHttpClient();
                            // Setup the get request
                HttpGet httpGetRequest = new HttpGet(URL_MATCHES);
                            try{
                                // Execute the request in the client
                                HttpResponse httpResponse = defaultClient.execute(httpGetRequest);
                                // Grab the response
                                BufferedReader reader = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent(), "UTF-8"));
                                json = reader.readLine();                       
                                }catch(Exception e){
                                    Log.d("Error in JSON",e.toString());
                                }

                try {               
                    istArray= new JSONArray(json);

                    if (matches != null) {
                        // looping through All albums
                        for (int i = 0; i < listArray.length(); i++) {
                            JSONObject c = istArray.getJSONObject(i);

                            // Storing each json item values in variable
                            id = c.getString(TAG_ID);
                            schname = c.getString(TAG_SCHNAME);
                        place= c.getString(TAG_PLACE);
                            datetime = c.getString(TAG_DATETIME);

                           // creating new HashMap
                            HashMap<String, String> map = new HashMap<String, String>();

                            // adding each child node to HashMap key => value
                            map.put(TAG_ID, id);
                            map.put(TAG_SCHNAME, schname);
                            map.put(TAG_PLACE, place);
                            map.put(TAG_DATETIME, datetime);



                            // adding HashList to ArrayList
                            list.add(map);
                        }
                    }else{


                        Log.d("Matches: ", "null");
                    }

                } catch (JSONException e) {

                    e.printStackTrace();
                }

                return null;
            }
            @Override
            protected void onPostExecute(String file_url) {
                // dismiss the dialog after getting all albums
                pDialog.dismiss();
                // updating UI from Background Thread
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        /**
                         * Updating parsed JSON data into ListView
                         * */

                         ListAdapter adapter = new SimpleAdapter(
                                getActivity(), list
                                R.layout.s_list, new String[] { TAG_ID,
                                    TAG_SCHNAME, TAG_PLACE, TAG_DATETIME, }, new int[] {
                                        R.id.list_id, R.id.schname, R.id.place, R.id.datetime });
                        // updating listview
                        list.setAdapter(adapter);
                    }
                });

            }
        }    
  }  

列表布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg">


<ListView
    android:id="@+id/list"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:layout_alignParentTop="true"
    android:layout_marginTop="40dp"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp"
    android:background="@color/white_overlay_list"
    android:divider="@color/lists_divider"
    android:dividerHeight="1dp"
    android:paddingLeft="5dp"
    android:paddingRight="5dp"
    android:paddingTop="0dp" />

</RelativeLayout>

单列表布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <!-- Album id / Hidden by default -->
    <TextView
        android:id="@+id/list_id"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:visibility="gone" />

    <TextView
        android:id="@+id/schname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        ndroid:layout_marginLeft="20dp"
        android:layout_marginTop="35dp"
        android:gravity="left"
       android:textColor="@color/black_font_color"
        android:textAppearance="?android:attr/textAppearanceMedium" />


    <TextView
        android:id="@+id/datetime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_marginTop="10dp"
        android:textColor="@color/black_font_color"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@place
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/datetime"
        android:layout_below="@+id/datetime"
        android:layout_marginTop="5dp"
        android:layout_marginBottom="15dp"

        android:textColor="@color/black_font_color"
        android:textAppearance="?android:attr/textAppearanceMedium" />
     <CheckBox
        android:id="@+id/checkBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:text="CheckBox" />      


</RelativeLayout>

Answer 1

点击监听器设置在您的列表视图上，而不是实际的 CheckBox。您将需要以某种方式在 onItemClick 中获取复选框并选中它，例如：

 @Override  
 public void onItemClick( AdapterView<?> parent, View item, int position, long id) { 

    CheckBox cb = (CheckBox)view.findViewById(R.id.checkBox);
    cb.setChecked(true);

 }

这是假设 View item 是您的个人 listView 项目

编辑：

当您在列表视图中有一个复选框时，它将拦截触摸事件。在列表项的 xml 文件中，将以下内容添加到元素中：

android:focusable="false"
android:focusableInTouchMode="false"

请注意，您必须按照我的原始答案中所述手动设置 onclicklistener 中的复选框