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我正在做一個android應用程序，它顯示listview中的患者列表。當我點擊列表中的一個項目時，另一個列表將顯示列表處方。我的問題是我將如何檢索該特定患者的所有處方列表。如何檢索ListView中的一個項目的數據，並打開另一個ListView
首先，點擊這個病人中的一個列表視圖
病人表結構
然後進入下一個列表視圖處方
這是我的處方表結構
，我想在列表視圖
這是關係視圖顯示此爲FKEY
這裏是我的處方清單代碼。
public class DocListPrescription extends ListActivity {
// Progress Dialog
private ProgressDialog pDialog;
TextView docusername;
Button btndelete;
String uid;
// Creating JSON Parser object
JSONParser2 jParser = new JSONParser2();
ArrayList<HashMap<String, String>> patientsList;
// url to get all products list
// private static String url_all_patients = "http://192.168.43.6/android_connect/get_all_patients.php";
private static String url_all_patients = "http://10.0.2.2/android_connect/get_all_prescriptions.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRESCRIPTION = "prescription";
private static final String TAG_PRES_ID = "pres_id";
private static final String TAG_UID = "uid";
private static final String TAG_NAME = "pres_name";
private static final String TAG_DATE = "date";
private static final String TAG_DOCUSERNAME = "docusername";
private ListView lv1;
// products JSONArray
JSONArray patients = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listpatient);
//docusername = (TextView) findViewById(R.id.docusername);
Intent i = getIntent();
// getting product id (pid) from intent
uid = i.getStringExtra(TAG_UID);
// Hashmap for ListView
patientsList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
// Get listview
ListView lv = getListView();
// on seleting single product
// launching Edit Product Screen
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String pres_id = ((TextView) view.findViewById(R.id.pres_id)).getText()
.toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),
AddPrescription.class);
// sending id to next activity
//in.putExtra(TAG_USERNAME,docusername.getText().toString());
in.putExtra(TAG_PRES_ID, pres_id);
// starting new activity and expecting some response back
startActivityForResult(in, 100);
//startActivity(i);
}
});
lv1 = (ListView) findViewById(android.R.id.list);
registerForContextMenu(lv1);
}
/*
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
if (v.getId()==R.id.list) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo)menuInfo;
menu.setHeaderTitle(Countries[info.position]);
String[] menuItems = getResources().getStringArray(R.menu.menu);
for (int i = 0; i<menuItems.length; i++) {
menu.add(Menu.NONE, i, i, menuItems[i]);
}
}
}
*/
@Override
public void onBackPressed() {
super.onBackPressed();
//userFunctions.logoutUser(getApplicationContext());
Intent intent = new Intent(this, DocMenuActivity.class);
intent.putExtra(TAG_DOCUSERNAME,docusername.getText().toString());
// Close all views before launching Dashboard
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//startActivity(dashboard);
startActivity(intent);
}
// Response from Edit Product Activity
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if result code 100
if (resultCode == 100) {
// if result code 100 is received
// means user edited/deleted product
// reload this screen again
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllProducts extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(DocListPrescription.this);
pDialog.setMessage("Loading precriptions. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("uid", uid));
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_patients, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Prescriptions: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
patients = json.getJSONArray(TAG_PRESCRIPTION);
// looping through All Products
for (int i = 0; i < patients.length(); i++) {
JSONObject c = patients.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_PRES_ID);
String details = c.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_PRES_ID, id);
map.put(TAG_NAME, details);
// adding HashList to ArrayList
patientsList.add(map);
}
} else {
// no products found
// Launch Add New product Activity
Intent i = new Intent(getApplicationContext(),
AddPrescription.class);
// Closing all previous activities
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
DocListPrescription.this, patientsList,
R.layout.rowprescrip, new String[] { TAG_PRES_ID,
TAG_NAME},
new int[] { R.id.pres_id, R.id.pres_name });
/*
*/
// updating listview
setListAdapter(adapter);
}
});
}
}
}
從這段代碼。我將ListofPatients的病人的uid傳遞給了這個活動，這樣我就可以得到這個特定項目（患者）的uid。
這是我的PHP檢索所有處方爲患者
<?php
/*
* Following code will list all the products
*/
// array for JSON response
$response = array();
// include db connect class
require_once __DIR__ . '/db_connect.php';
// connecting to db
$db = new DB_CONNECT();
// get all products from products table
$result = mysql_query("SELECT *FROM prescription") or die(mysql_error());
// check for empty result
if (mysql_num_rows($result) > 0) {
// looping through all results
// products node
$response["prescription"] = array();
while ($row = mysql_fetch_array($result)) {
// temp user array
$prescription = array();
$prescription["pres_id"] = $row["pres_id"];
$prescription["pres_name"] = $row["pres_name"];
// $prescription["created_at"] = $row["created_at"];
$prescription["date"] = $row["date"];
// push single product into final response array
array_push($response["prescription"], $prescription);
}
// success
$response["success"] = 1;
// echoing JSON response
echo json_encode($response);
} else {
// no products found
$response["success"] = 0;
$response["message"] = "No products found";
// echo no users JSON
echo json_encode($response);
}
?>
從這個代碼。我不知道如何使用患者uid的foreign_key檢索該處方。請幫忙。我怎樣才能做到這一點？提前致謝。我現在真的需要幫助。
如果你顯示錶結構以及映射表和期望的結果，那麼我們可以嘗試看看效果會更好 –
@AkhilSidharth我已經更新了我的問題。請檢查並請盡你所能幫助我。我真的需要這個應用程序。 – user3226149
您是否可以將患者的餐桌結構與您期望的結果一起使用？告訴，你希望結果如何？ –