Java Android-将JSON加载到ListView

我对Android开发还是相当陌生，我正在做一个应用程序/项目，其中包括将这个JSON（如下所列）加载到一个带有名称、描述和图像的

ListView

，但在模拟器上它一直是空白的。请告诉我我做错了什么-任何帮助都将不胜感激！（越具体越好，因为我是个新手……）

JSON:

 {
   "success":true,
   "games":[
      {
         "id":"1",
         "name":"Name of the Game",
         "description":"This is what it is about",
         "image":"IMAGE URL"
      }
   ]
}

// URL to make request
    private static final String url = "URL of API";

    // JSON Node names
    private static final String TAG_GAMES = "games";
    private static final String TAG_ID = "id";
    private static final String TAG_NAME = "name";
    private static final String TAG_DESCRIPTION = "description";
    private static final String TAG_IMAGE = "image";

    // games JSONArray
    JSONArray games = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

    // Hash map for ListView
                ArrayList<HashMap<String, String>> gameList = new ArrayList<HashMap<String, String>>();

            // Creating JSON Parser instance
            JSONParser jParser = new JSONParser();

            // getting JSON string from URL
            JSONObject json = jParser.getJSONFromUrl(url);

            try {
                // Getting Array of Games
                games = json.getJSONArray(TAG_GAMES);

                // looping through All Games
                for(int i = 0; i < games.length(); i++){
                    JSONObject c = games.getJSONObject(i);

                    // Storing each JSON item in variable
                    String id = c.getString(TAG_ID);
                    String image = c.getString(TAG_IMAGE);

                    // is again JSON Object
                    JSONObject author = c.getJSONObject(TAG_DESCRIPTION);
                    String name = author.getString(TAG_NAME);

                    // 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_NAME, name);
                    map.put( TAG_IMAGE, image);
                    // adding HashList to ArrayList
                    gameList.add(map);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }


            /**
             * Updating parsed JSON data into ListView
             * */
            ListAdapter adapter = new SimpleAdapter(this, gameList,
                    R.layout.list_item,
                    new String[] { TAG_NAME, TAG_DESCRIPTION }, new int[] {
                            R.id.name, R.id.description });

            setListAdapter(adapter);

            // selecting single ListView item
            ListView lv = getListView();

            // Launching new screen on Selecting Single ListItem
            lv.setOnItemClickListener(new OnItemClickListener() {

                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                    // getting values from selected ListItem
                    String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
                    String description = ((TextView) view.findViewById(R.id.description)).getText().toString();

                    // Starting new intent
                    Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
                    in.putExtra(TAG_NAME, name);
                    in.putExtra(TAG_DESCRIPTION, description);
                    startActivity(in);

                }
            });



        }

public class JSONParser {

    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";

    // constructor
    public JSONParser() {

    }

    public JSONObject getJSONFromUrl(String url) {

        // Making HTTP request
        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);

            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        // try parse the string to a JSON object
        try {
            jObj = new JSONObject(json);
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        // return JSON String
        return jObj;

    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
    <!-- Main ListView 
         Always give id value as list(@android:id/list)
    -->
    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>

AndroidJSONParsingActivity:

 {
   "success":true,
   "games":[
      {
         "id":"1",
         "name":"Name of the Game",
         "description":"This is what it is about",
         "image":"IMAGE URL"
      }
   ]
}

// URL to make request
    private static final String url = "URL of API";

    // JSON Node names
    private static final String TAG_GAMES = "games";
    private static final String TAG_ID = "id";
    private static final String TAG_NAME = "name";
    private static final String TAG_DESCRIPTION = "description";
    private static final String TAG_IMAGE = "image";

    // games JSONArray
    JSONArray games = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

    // Hash map for ListView
                ArrayList<HashMap<String, String>> gameList = new ArrayList<HashMap<String, String>>();

            // Creating JSON Parser instance
            JSONParser jParser = new JSONParser();

            // getting JSON string from URL
            JSONObject json = jParser.getJSONFromUrl(url);

            try {
                // Getting Array of Games
                games = json.getJSONArray(TAG_GAMES);

                // looping through All Games
                for(int i = 0; i < games.length(); i++){
                    JSONObject c = games.getJSONObject(i);

                    // Storing each JSON item in variable
                    String id = c.getString(TAG_ID);
                    String image = c.getString(TAG_IMAGE);

                    // is again JSON Object
                    JSONObject author = c.getJSONObject(TAG_DESCRIPTION);
                    String name = author.getString(TAG_NAME);

                    // 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_NAME, name);
                    map.put( TAG_IMAGE, image);
                    // adding HashList to ArrayList
                    gameList.add(map);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }


            /**
             * Updating parsed JSON data into ListView
             * */
            ListAdapter adapter = new SimpleAdapter(this, gameList,
                    R.layout.list_item,
                    new String[] { TAG_NAME, TAG_DESCRIPTION }, new int[] {
                            R.id.name, R.id.description });

            setListAdapter(adapter);

            // selecting single ListView item
            ListView lv = getListView();

            // Launching new screen on Selecting Single ListItem
            lv.setOnItemClickListener(new OnItemClickListener() {

                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                    // getting values from selected ListItem
                    String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
                    String description = ((TextView) view.findViewById(R.id.description)).getText().toString();

                    // Starting new intent
                    Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
                    in.putExtra(TAG_NAME, name);
                    in.putExtra(TAG_DESCRIPTION, description);
                    startActivity(in);

                }
            });



        }

public class JSONParser {

    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";

    // constructor
    public JSONParser() {

    }

    public JSONObject getJSONFromUrl(String url) {

        // Making HTTP request
        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);

            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        // try parse the string to a JSON object
        try {
            jObj = new JSONObject(json);
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        // return JSON String
        return jObj;

    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
    <!-- Main ListView 
         Always give id value as list(@android:id/list)
    -->
    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>

main.xml:

 {
   "success":true,
   "games":[
      {
         "id":"1",
         "name":"Name of the Game",
         "description":"This is what it is about",
         "image":"IMAGE URL"
      }
   ]
}

// URL to make request
    private static final String url = "URL of API";

    // JSON Node names
    private static final String TAG_GAMES = "games";
    private static final String TAG_ID = "id";
    private static final String TAG_NAME = "name";
    private static final String TAG_DESCRIPTION = "description";
    private static final String TAG_IMAGE = "image";

    // games JSONArray
    JSONArray games = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

    // Hash map for ListView
                ArrayList<HashMap<String, String>> gameList = new ArrayList<HashMap<String, String>>();

            // Creating JSON Parser instance
            JSONParser jParser = new JSONParser();

            // getting JSON string from URL
            JSONObject json = jParser.getJSONFromUrl(url);

            try {
                // Getting Array of Games
                games = json.getJSONArray(TAG_GAMES);

                // looping through All Games
                for(int i = 0; i < games.length(); i++){
                    JSONObject c = games.getJSONObject(i);

                    // Storing each JSON item in variable
                    String id = c.getString(TAG_ID);
                    String image = c.getString(TAG_IMAGE);

                    // is again JSON Object
                    JSONObject author = c.getJSONObject(TAG_DESCRIPTION);
                    String name = author.getString(TAG_NAME);

                    // 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_NAME, name);
                    map.put( TAG_IMAGE, image);
                    // adding HashList to ArrayList
                    gameList.add(map);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }


            /**
             * Updating parsed JSON data into ListView
             * */
            ListAdapter adapter = new SimpleAdapter(this, gameList,
                    R.layout.list_item,
                    new String[] { TAG_NAME, TAG_DESCRIPTION }, new int[] {
                            R.id.name, R.id.description });

            setListAdapter(adapter);

            // selecting single ListView item
            ListView lv = getListView();

            // Launching new screen on Selecting Single ListItem
            lv.setOnItemClickListener(new OnItemClickListener() {

                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                    // getting values from selected ListItem
                    String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
                    String description = ((TextView) view.findViewById(R.id.description)).getText().toString();

                    // Starting new intent
                    Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
                    in.putExtra(TAG_NAME, name);
                    in.putExtra(TAG_DESCRIPTION, description);
                    startActivity(in);

                }
            });



        }

public class JSONParser {

    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";

    // constructor
    public JSONParser() {

    }

    public JSONObject getJSONFromUrl(String url) {

        // Making HTTP request
        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);

            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        // try parse the string to a JSON object
        try {
            jObj = new JSONObject(json);
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        // return JSON String
        return jObj;

    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
    <!-- Main ListView 
         Always give id value as list(@android:id/list)
    -->
    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>

list_item.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <!-- Name Label -->
    <TextView
        android:id="@+id/name"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="#43bd00"
        android:textSize="16sp"
        android:textStyle="bold"
        android:paddingTop="6dip"
        android:paddingBottom="2dip" />
        <TextView
            android:id="@+id/description"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textColor="#acacac"
            android:paddingBottom="2dip" />
        </LinearLayout>

添加LogCat信息：

01-03 06:16:15.254: E/ActivityThread(616): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d47b40 that was originally bound here
01-03 06:16:15.254: E/ActivityThread(616): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d47b40 that was originally bound here
01-03 06:16:15.254: E/ActivityThread(616):  at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
01-03 06:16:15.254: E/ActivityThread(616):  at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
01-03 06:16:15.254: E/ActivityThread(616):  at android.app.ContextImpl.bindService(ContextImpl.java:1418)
01-03 06:16:15.254: E/ActivityThread(616):  at android.app.ContextImpl.bindService(ContextImpl.java:1407)
01-03 06:16:15.254: E/ActivityThread(616):  at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
01-03 06:16:15.254: E/ActivityThread(616):  at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
01-03 06:16:15.254: E/ActivityThread(616):  at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
01-03 06:16:15.254: E/ActivityThread(616):  at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
01-03 06:16:15.254: E/ActivityThread(616):  at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
01-03 06:16:15.254: E/ActivityThread(616):  at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
01-03 06:16:15.254: E/ActivityThread(616):  at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
01-03 06:16:15.254: E/ActivityThread(616):  at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-03 06:16:15.254: E/ActivityThread(616):  at java.util.concurrent.FutureTask.run(FutureTask.java:234)
01-03 06:16:15.254: E/ActivityThread(616):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
01-03 06:16:15.254: E/ActivityThread(616):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
01-03 06:16:15.254: E/ActivityThread(616):  at java.lang.Thread.run(Thread.java:856)
01-03 06:16:15.365: E/StrictMode(616): null
01-03 06:16:15.365: E/StrictMode(616): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d47b40 that was originally bound here
01-03 06:16:15.365: E/StrictMode(616):  at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
01-03 06:16:15.365: E/StrictMode(616):  at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
01-03 06:16:15.365: E/StrictMode(616):  at android.app.ContextImpl.bindService(ContextImpl.java:1418)
01-03 06:16:15.365: E/StrictMode(616):  at android.app.ContextImpl.bindService(ContextImpl.java:1407)
01-03 06:16:15.365: E/StrictMode(616):  at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
01-03 06:16:15.365: E/StrictMode(616):  at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
01-03 06:16:15.365: E/StrictMode(616):  at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
01-03 06:16:15.365: E/StrictMode(616):  at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
01-03 06:16:15.365: E/StrictMode(616):  at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
01-03 06:16:15.365: E/StrictMode(616):  at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
01-03 06:16:15.365: E/StrictMode(616):  at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
01-03 06:16:15.365: E/StrictMode(616):  at android.os.AsyncTask$2.call(AsyncTask.java:287)

01-03 06:16:15.254:E/ActivityThread（616）：Service com.android.exchange.ExchangeService已泄漏ServiceConnection com.android.emailcommon.Service.ServiceProxy$ProxyConnection@40d47b40原来是订在这里的
01-03 06:16:15.254:E/ActivityThread（616）：android.app.ServiceConnection泄漏：Service com.android.exchange.ExchangeService已泄漏ServiceConnection com.android.emailcommon.Service.ServiceProxy$ProxyConnection@40d47b40原来是订在这里的
01-03 06:16:15.254:E/ActivityThread（616）：位于android.app.LoadedAppk$ServiceDispatcher（LoadedAppk.java:969）
01-03 06:16:15.254:E/ActivityThread（616）：在android.app.LoadedApk.getServiceDispatcher（LoadedApk.java:863）
01-03 06:16:15.254:E/ActivityThread（616）：位于android.app.ContextImpl.bindService（ContextImpl.java:1418）
01-03 06:16:15.254:E/ActivityThread（616）：位于android.app.ContextImpl.bindService（ContextImpl.java:1407）
01-03 06:16:15.254:E/ActivityThread（616）：位于android.content.ContextWrapper.bindService（ContextWrapper.java:473）
01-03 06:16:15.254:E/ActivityThread（616）：位于com.android.emailcommon.service.ServiceProxy.setTask（ServiceProxy.java:157）
01-03 06:16:15.254:E/ActivityThread（616）：位于com.android.emailcommon.service.ServiceProxy.setTask（ServiceProxy.java:145）
01-03 06:16:15.254:E/ActivityThread（616）：位于com.android.emailcommon.service.ServiceProxy.test（ServiceProxy.java:191）
01-03 06:16:15.254:E/ActivityThread（616）：位于com.android.exchange.ExchangeService$7.run（ExchangeService.java:1850）
01-03 06:16:15.254:E/ActivityThread（616）：位于com.android.emailcommon.utility.utility$2.doInBackground（utility.java:551）
01-03 06:16:15.254:E/ActivityThread（616）：位于com.android.emailcommon.utility.utility$2.doInBackground（utility.java:549）
01-03 06:16:15.254:E/ActivityThread（616）：在android.os.AsyncTask$2.call（AsyncTask.java:287）
01-03 06:16:15.254:E/ActivityThread（616）：位于java.util.concurrent.FutureTask.run（FutureTask.java:234）
01-03 06:16:15.254:E/ActivityThread（616）：位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1080）
01-03 06:16:15.254:E/ActivityThread（616）：位于java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:573）
01-03 06:16:15.254:E/ActivityThread（616）：在java.lang.Thread.run（Thread.java:856）上
01-03 06:16:15.365:E/StrictMode（616）：空
01-03 06:16:15.365:E/StrictMode（616）：android.app.ServiceConnection泄漏：Service com.android.exchange.ExchangeService已泄漏ServiceConnection com.android.emailcommon.Service.ServiceProxy$ProxyConnection@40d47b40原来是订在这里的
01-03 06:16:15.365:E/StrictMode（616）：在android.app.LoadedApk$ServiceDispatcher上。（LoadedApk.java:969）
01-03 06:16:15.365:E/StrictMode（616）：在android.app.LoadedApk.getServiceDispatcher（LoadedApk.java:863）
01-03 06:16:15.365:E/StrictMode（616）：位于android.app.ContextImpl.bindService（ContextImpl.java:1418）
01-03 06:16:15.365:E/StrictMode（616）：位于android.app.ContextImpl.bindService（ContextImpl.java:1407）
01-03 06:16:15.365:E/StrictMode（616）：位于android.content.ContextWrapper.bindService（ContextWrapper.java:473）
01-03 06:16:15.365:E/StrictMode（616）：位于com.android.emailcommon.service.ServiceProxy.setTask（ServiceProxy.java:157）
01-03 06:16:15.365:E/StrictMode（616）：位于com.android.emailcommon.service.ServiceProxy.setTask（ServiceProxy.java:145）
01-03 06:16:15.365:E/StrictMode（616）：位于com.android.emailcommon.service.ServiceProxy.test（ServiceProxy.java:191）
01-03 06:16:15.365:E/StrictMode（616）：位于com.android.exchange.ExchangeService$7.run（ExchangeService.java:1850）
01-03 06:16:15.365:E/stricmode（616）：在com.android.emailcommon.utility.utility$2.doInBackground（utility.java:551）
01-03 06:16:15.365:E/stricmode（616）：在com.android.emailcommon.utility.utility$2.doInBackground（utility.java:549）
01-03 06:16:15.365:E/StrictMode（616）：在android.os.AsyncTask$2.call（AsyncTask.java:287）

AsyncTask.class

class LoadMovies extends AsyncTask<Void, Void, List<Category>>{

private YourActivity activity;

public LoadMovies(YourActivity activty){
    activity = activty;
}

        private final static String TAG = "Log";


        @Override
        protected List<Category> doInBackground(Void... params) {
            InputStream ips = null;
            JSONObject json = null;

            try{
                DefaultHttpClient client = new DefaultHttpClient();
                HttpResponse response = client.execute(new HttpGet("http://youtsite"));

                ips = response.getEntity().getContent();
                BufferedReader buffer = new BufferedReader(new InputStreamReader(ips));
                StringBuilder builder = new StringBuilder();
                String line;

                while((line = buffer.readLine()) != null){
                    builder.append(line+"\n");
                }
                json = new JSONObject(builder.toString());

            }
            catch(Exception e){
                Log.i(TAG, e.toString());
            }

                List<Category> list = new ArrayList<Category>();
                JSONArray array = json.optJSONObject("data").optJSONArray("reviews");
                for (int i = 0; i < array.length(); i++){
                    JSONObject rss = array.optJSONObject(i); 
                                    Category cat = new Category();
                                    cat.addName(rss.optString("name"));  
                                    cat.addCode(rss.optString("code"));                     
                    list.add(cat);
                }

            return list;
        }

        protected void onPostExecute(List<Category> result){
            super.onPostExecute(result);
                    Youractivity.mMoviesAdapter.addCategory(result);
        }

    }

public class Category {
    private String name;
    private String code;

    void addName(String name){
        this.name = name;
    }

    void addCode(String code){
        this.code = code;
    }

    public String getName(){
     return this.name;
    }

    String getCode(){
        return this.code;
    }
}

适配器类

class MoviesAdapter extends ArrayAdapter<Category> {

    Context c;      
    List<Category> mListCategory; 

    public MoviesAdapter(Context context, int resource, int textViewResource, List<Categoryy> list) {
        super(context, resource, textViewResource, list);
        c = context;

        mListCategory= list;
    }

    public void addCategory(List<MoviesCategory> list){
        mListCategory.addAll(list);
        notifyDataSetChanged();
    }

    @Override
     public View getView(int position, View convertView, ViewGroup parent){
        View v = convertView;
        if(v == null){
            LayoutInflater inflater = LayoutInflater.from(c);
            v = inflater.inflate(R.layout.yourview, null);
        }

        TextView title =  (TextView) v.findViewById(R.id.title);
        TextView code=  (TextView) v.findViewById(R.id.code);

        Category cat = getItem(position);
        if(mov != null){
            title.setText(cat.getName());
            code.setText(cat.getCode());

        }

        return v;
    }   

}

class MoviesAdapter扩展了ArrayAdapter{
上下文c；
列表类别；
公共MoviesAdapter（上下文上下文、int资源、int文本视图资源、列表）{
超级（上下文、资源、textViewResource、列表）；
c=上下文；
mListCategory=列表；
}
公共无效添加类别（列表）{
mListCategory.addAll（列表）；
notifyDataSetChanged（）；
}
@凌驾
公共视图getView（int位置、视图转换视图、视图组父视图）{
视图v=转换视图；
如果（v==null）{
LayoutInflater充气机=来自（c）的LayoutInflater；
v=充气机。充气（R.layout.yourview，null）；
}
TextView title=（TextView）v.findViewById（R.id.title）；
TextView代码=（TextView）v.findViewById（R.id.code）；
类别cat=getItem（位置）；
如果（mov！=null）{
title.setText（cat.getName（））；
code.setText（cat.getCode（））；
}
返回v；
}   
}

在main活动中，调用所有

    public class YourActivity extends MainActivity{
    private ListView mCategory;
    private List<Category> mCategoryArray = new ArrayList<Category>();
    private LoadMovies mLoadMovies;
    public mMoviesAdapter adapter;

   @Override
   protected void onCreate(Bundle bundle){
   super.onCreate(bundle);

    //MoviesList        
        mMoviesAdapter = new MoviesAdapter(this, R.layout.main_movies_adapter, R.id.youradapterlayout, mCategoryArray );
        mCategoryList = (ListView) findViewById(R.id.movies_adapter_list);
        mMoviesList.setAdapter(mMoviesAdapter);

        mLoadMovies = new LoadMovies(this);
        mLoadMovies.execute();
}
    }

公共类YourActivity扩展了MainActivity{
私有ListView McCategory；
私有列表mCategoryArray=new ArrayList（）；
私人下载电影；
公共mMoviesAdapter适配器；
@凌驾
创建时受保护的void（捆绑）{
super.onCreate（bundle）；
//电影名单
姆莫维萨达普