我在自定义搜索上花费了太多时间。
谁能告诉我，我将如何在我的代码中实现它。请帮助我已经在列表中获取数据，我有编辑框，但我不知道，它将如何在 Using Filterable 类中实现或我将如何
addTextChangedListener(){} 使用这段代码。
editTxt.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
我的代码是 MainSearch.java，我会在哪里得到列表。
在这个调用中，我将在其中实现搜索代码.. 我有一点想法，如果我将所有列表项保存在 arrayList 中，并将所有这些值与 editText 值进行比较。它可能会提供解决方案。不确定。
public class MainSEarch extends Activity {
// Progress Dialog
private ProgressDialog pDialog;
ListView list;
LazyAdapter adapter;
// Connection detector
ConnectionDetector cd;
// Alert dialog manager
AlertDialogManager alert = new AlertDialogManager();
ArrayList<HashMap<String, String>> contactList;
// Search EditText
EditText inputSearch;
int textlength = 0;
// url to make request
String url = "URl NOT HERE But like as http://api.androidhive.info/contacts/";
// JSON Node names
static final String TAG_CONTACTS = "userinfo";
static final String TAG_ID = "id";
static final String TAG_NAME = "name";
static final String TAG_EMAIL = "email";
static final String TAG_PHONE = "cb_phonenumber";
// contacts JSONArray
JSONArray userinfo = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.list_search);
inputSearch = (EditText) findViewById(R.id.editText1); // Search Box
cd = new ConnectionDetector(getApplicationContext());
// Check for internet connection
if (!cd.isConnectingToInternet()) {
// Internet Connection is not present
alert.showAlertDialog(MainSEarch.this, "Internet Connection Error",
"Please connect to working Internet connection", false);
// stop executing code by return
return;
}
// Hashmap for ListView
contactList = new ArrayList<HashMap<String, String>>();
// Loading Agents list JSON in Background Thread
new LoadAgentList().execute();
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
//what should I do in this method.plz provide some solutions.
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
/**
* Background Async Task to Load all Albums by making http request
* */
class LoadAgentList extends AsyncTask<String, String, String>
{
/** *
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainSEarch.this);
pDialog.setMessage("Agents List ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
// Creating JSON Parser instance
JSONParser jParser = new JSONParser();
// getting JSON string from URL
JSONObject json = jParser.getJSONFromUrl(url);
try{
// Getting Array of Contacts
userinfo = json.getJSONArray(TAG_CONTACTS);
// looping through All Contacts
for(int i = 0; i < userinfo.length(); i++){
JSONObject c = userinfo.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ID);
String name = c.getString(TAG_NAME);
String email = c.getString(TAG_EMAIL);
String mobile = c.getString(TAG_PHONE);
// 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_EMAIL, email);
map.put(TAG_PHONE, mobile);
// adding HashList to ArrayList
contactList.add(map);
}
}
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
runOnUiThread(new Runnable() {
public void run() {
list=(ListView)findViewById(R.id.mylist);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapter(MainSEarch.this,contactList);
list.setAdapter(adapter);
}
});
}
}
我的第二类是LazyAdapter：它将显示 getView() 方法如何使视图膨胀以及惰性列表将如何工作代码是我在这个类中所做的
public class LazyAdapter extends BaseAdapter {
private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater=null;
public LazyAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
activity = a;
data=d;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data.size();
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View vi=convertView;
if(convertView==null)
vi = inflater.inflate(R.layout.list_item, null);
TextView name = (TextView)vi.findViewById(R.id.name); // name
TextView email = (TextView)vi.findViewById(R.id.email); // email
TextView phone = (TextView)vi.findViewById(R.id.mobile); // phone
HashMap<String, String> song = new HashMap<String, String>();
song = data.get(position);
// Setting all values in listview
name.setText(song.get(MainSEarch.TAG_NAME));
email.setText(song.get(MainSEarch.TAG_EMAIL));
phone.setText(song.get(MainSEarch.TAG_PHONE));
return vi;
}
}
我的代码中应该有什么变化，我的搜索将被执行。Plz我是Android的初学者。提前致谢