1
我的Android應用程序基於Job門戶,我已經解析了來自網站的信息並進入了列表視圖,現在列表視圖包含所有類別的作業,在第一個活動中有一個文本框和搜索按鈕,在文本框中給出「標題」的關鍵字,只有這些類別的作業應該顯示在列表視圖中。要做到這一點,我必須比較「文本框」中的元素與網站數據或已經在列表視圖中解析的信息? 用於比較「文本框」中的字符串並將其存儲在單獨的數組中,我應該在哪裏放置代碼,任何人都可以幫忙?Android中的搜索按鈕功能
public class Home extends ListActivity
{// url to make request
private static String url = "http://www.example.com/jobs/?json=get_recent_posts";
// JSON Node names
private static final String TAG_POSTS = "posts";
private static final String TAG_ID = "id";
private static final String TAG_TITLE = "title";
private static final String TAG_DATE = "date";
private static final String TAG_CONTENT = "content";
private static final String TAG_AUTHOR = "author";
private static final String TAG_NAME = "name";
// contacts JSONArray
JSONArray posts = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Hashmap for ListView
ArrayList<HashMap<String, String>> contactList = 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 Contacts
posts = json.getJSONArray(TAG_POSTS);
// looping through All Contacts
for(int i = 0; i < posts.length(); i++){
JSONObject c = posts.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ID);
String title = c.getString(TAG_TITLE);
String date = c.getString(TAG_DATE);
String content = c.getString(TAG_CONTENT);
content = content.replace("<br />", "");
content = content.replace("<p>", "");
content = content.replace("</p>", "");
// Phone number is agin JSON Object
JSONObject author = c.getJSONObject(TAG_AUTHOR);
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_TITLE, title);
map.put(TAG_DATE, date);
map.put(TAG_NAME, name);
map.put(TAG_CONTENT, content);
// adding HashList to ArrayList
contactList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(this, contactList,
R.layout.activity_home,
new String[] { TAG_TITLE, TAG_DATE, TAG_NAME, TAG_CONTENT }, new int[] {
R.id.name, R.id.email,R.id.mobile,R.id.content});
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 title = ((TextView) view.findViewById(R.id.name)).getText().toString();
String date = ((TextView) view.findViewById(R.id.email)).getText().toString();
String name = ((TextView) view.findViewById(R.id.mobile)).getText().toString();
String content = ((TextView) view.findViewById(R.id.content)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), Singlemenuitem.class);
in.putExtra(TAG_TITLE, title);
in.putExtra(TAG_DATE, date);
in.putExtra(TAG_NAME, name);
in.putExtra(TAG_CONTENT, content);
startActivity(in);
}
});
感謝您的回覆dany,因爲我是新手,你有沒有這方面的任何鏈接,因爲我搜索的一切都是基於靜態listivew。 @justDanyul –
非常歡迎。作爲開始,我會閱讀這個http://www.vogella.com/articles/AndroidListView/article.html,它會讓你很好地理解列表視圖是如何工作的,以及如何讓它們支持陣列適配器。得到這些後,其餘的應該是相當平凡的。 – JustDanyul