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我與一些教程我發現在網絡上練習實現搜索對話框，我與數據庫中的列表視圖列表視圖適配器進行通信的上市，作爲展開你展現不同的名字，我會喜歡添加一個搜索對話框，像這樣的Example Image，但沒有在部署的地方，我嘗試了各種方式。 這是代碼示例的一部分：如何在ListView控件的MySql -Android
LIST活動：
public class List extends Activity {
private ProgressDialog pDialog;
public int i = 0;
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> DaftarRS = new ArrayList<HashMap<String, String>>();
private static String url_daftar_rs = "my_url";
public static final String TAG_SUCCESS = "success";
public static final String TAG_DAFTAR_RS = "daftar_rs";
public static final String TAG_ID_RS = "id_rs";
public static final String TAG_NAMA_RS = "nama_rs";
public static final String TAG_LINK_IMAGE_RS = "link_image_rs";
public static final String TAG_ALAMA_RS = "alamat_rs";
public static final String TAG_TELEPONS_RS = "telepon_rs";
JSONArray daftar_rs = null;
ListView list;
ListAdapter adapter;
private ListadoActivity activity;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
DaftarRS = new ArrayList<HashMap<String, String>>();
new Activity().execute();
activity = this;
list = (ListView) findViewById(R.id.list);
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String id_rs = ((TextView) view
.findViewById(R.id.id_rs)).getText().toString();
Intent in = new Intent(getApplicationContext(),
DetallesActivity.class);
in.putExtra(TAG_ID_RS, id_rs);
startActivityForResult(in, 100);
}
});
}
public void SetListViewAdapter(ArrayList<HashMap<String, String>> daftar) {
adapter = new ListAdapter(activity, daftar);
list.setAdapter(adapter);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == 100) {
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
class Activity extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(List.this);
pDialog.setMessage("wait..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
Conexion();
if (i == 0) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
JSONObject json = jParser.makeHttpRequest(url_daftar_rs, "GET",
params);
Log.d("All Products: ", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
daftar_rs = json.getJSONArray(TAG_DAFTAR_RS);
for (int i = 0; i < daftar_rs.length(); i++) {
JSONObject c = daftar_rs.getJSONObject(i);
String id_rs = c.getString(TAG_ID_RS);
String nama_rs = c.getString(TAG_NAMA_RS);
String link_image_rs = c
.getString(TAG_LINK_IMAGE_RS);
String alamat_rs = c.getString(TAG_ALAMAT_RS);
String telepon_rs = c.getString(TAG_TELEPON_RS);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_ID_RS, id_rs);
map.put(TAG_NAMA_RS, nama_rs);
map.put(TAG_LINK_IMAGE_RS, link_image_rs);
map.put(TAG_ALAMAT_RS, alamat_rs);
map.put(TAG_TELEPON_RS, telepon_rs);
DaftarRS.add(map);
}
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
}
else{ finish();
}
return null;
}
JSON解析器：
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET method
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if (method == "POST") {
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} else if (method == "GET") {
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
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;
}
}
LISTADAPTER：
public class ListAdapter extends BaseAdapter {
private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater = null;
public ImageLoader imageLoader;
public ListAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
activity = a;
data = d;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader = new ImageLoader(activity.getApplicationContext());
}
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.item_list_rs, null);
TextView id_rs = (TextView) vi.findViewById(R.id.id_rs);
TextView nama_rs = (TextView) vi.findViewById(R.id.nama_rs);
TextView link_image_rs = (TextView) vi.findViewById(R.id.link_image_rs);
TextView alamat_rs = (TextView) vi.findViewById(R.id.alamat_rs);
TextView telepon_rs = (TextView) vi.findViewById(R.id.telepon_rs);
ImageView thumb_image = (ImageView) vi.findViewById(R.id.image_rs);
HashMap<String, String> daftar_rs = new HashMap<String, String>();
daftar_rs = data.get(position);
id_rs.setText(daftar_rs.get(ListadoActivity.TAG_ID_RS));
nama_rs.setText(daftar_rs.get(ListadoActivity.TAG_NAMA_RS));
link_image_rs.setText(daftar_rs.get(ListadoActivity.TAG_LINK_IMAGE_RS));
alamat_rs.setText(daftar_rs.get(ListadoActivity.TAG_ALAMAT_RS));
telepon_rs.setText(daftar_rs.get(ListadoActivity.TAG_TELEPON_RS));
imageLoader.DisplayImage(daftar_rs.get(ListadoActivity.TAG_LINK_IMAGE_RS),
thumb_image);
return vi;
}
}
這是初學者一個很好的問題。我還將創建一個具有搜索框的應用程序。搜索框將使用MySql數據庫，JSON數據。現在我正在嘗試檢查一些例子。超級問題 – TeachMeJava