Listview Lade mehr footer

1public class categoryActivity extends ListActivity {
2
3 String cat;
4
5 // Progress Dialog
6 private ProgressDialog pDialog;
7
8 // Session Manager Class
9 SessionManager session;
10
11 // Creating JSON Parser object
12 JSONParser jsonParser = new JSONParser();
13
14 ArrayList<HashMap<String, String>> jokeList;
15
16 // url to get all jokes list
17 private static String url_all_category = "http://............./get_category_details.php";
18
19 // JSON Node names
20 private static final String TAG_SUCCESS = "success";
21 private static final String TAG_CATEGORIES = "joke";
22 private static final String TAG_CID = "cid";
23 private static final String TAG_NAME = "name";
24 private static final String TAG_JOKE = "joke";
25 private static final String TAG_JID = "jid";
26 private static final String TAG_OWN = "own";
27 private static final String TAG_DATE = "date";
28 private static final String TAG_OID = "oid";
29 private static final String TAG_OWN_ID = "own_id";
30
31 // jokes JSONArray
32 JSONArray jokes = null;
33
34 @Override
35 public void onCreate(Bundle savedInstanceState) {
36 super.onCreate(savedInstanceState);
37 setContentView(R.layout.main);
38
39 // Hashmap for ListView
40 jokeList = new ArrayList<HashMap<String, String>>();
41
42 session = new SessionManager(getApplicationContext());
43
44 // Get listview
45 ListView lv = getListView();
46
47 // Loading jokes in Background Thread
48 new LoadAllJokes().execute();
49
50 lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
51 @Override
52 public void onItemClick(AdapterView<?> arg0, View view, int arg2,
53 long arg3) {
54 /*DATEN VON GEKLICKETES ELEMENT FÜR NÄCHSTE ACTIVITY BEREITSTELLEN*/
55 }
56 });
57
58 }
59
60 /**
61 * Background Async Task to Load all product by making HTTP Request
62 * */
63 class LoadAllJokes extends AsyncTask<String, String, String> {
64
65 /**
66 * Before starting background thread Show Progress Dialog
67 * */
68 @Override
69 protected void onPreExecute() {
70 super.onPreExecute();
71 pDialog = new ProgressDialog(categoryActivity.this);
72 pDialog.setMessage("Lade Witze. Bitte warten...");
73 pDialog.setIndeterminate(false);
74 pDialog.setCancelable(false);
75 pDialog.show();
76 }
77
78 /**
79 * getting All jokes from url
80 * */
81 protected String doInBackground(String... args) {
82 // Building Parameters
83 List<NameValuePair> params = new ArrayList<NameValuePair>();
84
85 // get user data from session
86 HashMap<String, String> user = session.getUserDetails();
87 String username = user.get(SessionManager.KEY_NAME);
88
89 params.add(new BasicNameValuePair("name", cat));
90 params.add(new BasicNameValuePair("username", username));
91 // getting JSON string from URL
92 JSONObject json = jsonParser.makeHttpRequest(
93 url_all_category, "GET", params);
94
95 // log cat for JSON reponse
96 Log.d("All joke_cat: ", json.toString());
97
98 try {
99 // Checking for SUCCESS TAG
100 int success = json.getInt(TAG_SUCCESS);
101 if (success == 1) {
102 // JOKE FOUND
103 // Getting Array
104 jokes = json.getJSONArray(TAG_CATEGORIES);
105
106
107 // looping through All Joke
108 for (int i = 0; i < jokes.length(); i++) {
109 JSONObject c = jokes.getJSONObject(i);
110
111 // Storing each json item in variable
112 String id = c.getString(TAG_JID);
113 String name = c.getString(TAG_JOKE);
114 String own = c.getString(TAG_OWN);
115 String date = c.getString(TAG_DATE);
116 String own_id = c.getString(TAG_OWN_ID);
117
118 // creating new HashMap
119 HashMap<String, String> map = new HashMap<String, String>();
120
121 // adding each child node to HashMap key => value
122 map.put(TAG_JID, id);
123 map.put(TAG_JOKE, name);
124 map.put(TAG_OWN, own);
125 map.put(TAG_DATE, date);
126 map.put(TAG_OWN_ID, own_id);
127
128 // adding HashList to ArrayList
129 jokeList.add(map);
130 }
131 } else {
132 // no joke found
133 }
134 } catch (JSONException e) {
135 e.printStackTrace();
136 }
137 return null;
138 }
139
140 /**
141 * After completing background task Dismiss the progress dialog
142 * **/
143 protected void onPostExecute(String file_url) {
144 // dismiss the dialog after getting all joke
145 pDialog.dismiss();
146 // updating UI from Background Thread
147 runOnUiThread(new Runnable() {
148 public void run() {
149 /**
150 * Updating parsed JSON data into ListView
151 * */
152 ListAdapter adapter = new SimpleAdapter(
153 categoryActivity.this, jokeList,
154 R.layout.joke_list_item, new String[] { TAG_JID,
155 TAG_JOKE, TAG_OWN, TAG_DATE, TAG_OWN_ID},
156 new int[] { R.id.pid, R.id.name, R.id.own, R.id.date, R.id.own_id });
157 // updating listview
158 setListAdapter(adapter);
159 }
160 });
161
162 }
163
164 }
165}