Ciao a tutti sto tentando di fare una app seguendo questo tutorial vecchio http://www.androidhive.info/2012/05/...ith-php-mysql/
Ho aggiornato la Classe JASONParser cosi:
e modificato l'activity che carica tutti i dati su una listview premendo un button cosi:codice:public class JSONParser { String charset = "UTF-8"; HttpURLConnection conn; DataOutputStream wr; StringBuilder result; URL urlObj; JSONObject jObj = null; StringBuilder sbParams; String paramsString; public JSONObject makeHttpRequest(String url, String method, HashMap<String, String> params) { sbParams = new StringBuilder(); int i = 0; for (String key : params.keySet()) { try { if (i != 0){ sbParams.append("&"); } sbParams.append(key).append("=") .append(URLEncoder.encode(params.get(key), charset)); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } i++; } if (method.equals("POST")) { // request method is POST try { urlObj = new URL(url); conn = (HttpURLConnection) urlObj.openConnection(); conn.setDoOutput(true); conn.setRequestMethod("POST"); conn.setRequestProperty("Accept-Charset", charset); conn.setReadTimeout(10000); conn.setConnectTimeout(15000); conn.connect(); paramsString = sbParams.toString(); wr = new DataOutputStream(conn.getOutputStream()); wr.writeBytes(paramsString); wr.flush(); wr.close(); } catch (IOException e) { e.printStackTrace(); } } else if(method.equals("GET")){ // request method is GET if (sbParams.length() != 0) { url += "?" + sbParams.toString(); } try { urlObj = new URL(url); conn = (HttpURLConnection) urlObj.openConnection(); conn.setDoOutput(false); conn.setRequestMethod("GET"); conn.setRequestProperty("Accept-Charset", charset); conn.setConnectTimeout(15000); conn.connect(); } catch (IOException e) { e.printStackTrace(); } } try { //Receive the response from the server InputStream in = new BufferedInputStream(conn.getInputStream()); BufferedReader reader = new BufferedReader(new InputStreamReader(in)); result = new StringBuilder(); String line; while ((line = reader.readLine()) != null) { result.append(line); } Log.d("JSON Parser", "result: " + result.toString()); } catch (IOException e) { e.printStackTrace(); } conn.disconnect(); // try parse the string to a JSON object try { jObj = new JSONObject(result.toString()); } catch (JSONException e) { Log.e("JSON Parser", "Error parsing data " + e.toString()); } // return JSON Object return jObj; } }
Pero ottengo questo errore:codice:public class AllProductsActivity extends ListActivity { // Progress Dialog private ProgressDialog pDialog; // Creating JSON Parser object JSONParser jParser = new JSONParser(); ArrayList<HashMap<String, String>> productsList; // url to get all products list private static String url_all_products = "http://192.168.3.199/RiparazioniServer/Test.php"; // JSON Node names private static final String TAG_SUCCESS = "success"; private static final String TAG_PRODUCTS = "products"; private static final String TAG_PID = "pid"; private static final String TAG_NAME = "name"; // products JSONArray JSONArray products = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.all_products); // Hashmap for ListView productsList = 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 pid = ((TextView) view.findViewById(R.id.pid)).getText() .toString(); // Starting new intent Intent in = new Intent(getApplicationContext(), EditProductActivity.class); // sending pid to next activity in.putExtra(TAG_PID, pid); // starting new activity and expecting some response back startActivityForResult(in, 100); } }); } // 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, JSONObject> { /** * Before starting background thread Show Progress Dialog * */ @Override protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(AllProductsActivity.this); pDialog.setMessage("Loading products. Please wait..."); pDialog.setIndeterminate(false); pDialog.setCancelable(false); pDialog.show(); } /** * getting All products from url * */ protected JSONObject doInBackground(String... args) { try { // Building Parameters HashMap<String, String> params = new HashMap<>(); params.put("pid", args[0]); //params.put("password", args[1]); // getting JSON string from URL JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params); // Check your log cat for JSON reponse Log.d("All Products: ", json.toString()); // Checking for SUCCESS TAG int success = json.getInt(TAG_SUCCESS); if (success == 1) { // products found // Getting Array of Products products = json.getJSONArray(TAG_PRODUCTS); // looping through All Products for (int i = 0; i < products.length(); i++) { JSONObject c = products.getJSONObject(i); // Storing each json item in variable String id = c.getString(TAG_PID); String name = 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_PID, id); map.put(TAG_NAME, name); // adding HashList to ArrayList productsList.add(map); } } else { // no products found // Launch Add New product Activity Intent i = new Intent(getApplicationContext(), NewProductActivity.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( AllProductsActivity.this, productsList, R.layout.list_item, new String[] { TAG_PID, TAG_NAME}, new int[] { R.id.pid, R.id.name }); // updating listview setListAdapter(adapter); } }); } }
codice:[ 09-15 21:40:23.104 14328:14328 D/ ] HostConnection::get() New Host Connection established 0xaa9e4b60, tid 14328 09-15 21:40:23.884 14328-14328/com.example.androidhive D/gralloc_ranchu: gralloc_unregister_buffer: exiting HostConnection (is buffer-handling thread) 09-15 21:40:23.888 14328-14328/com.example.androidhive E/WindowManager: android.view.WindowLeaked: Activity com.example.androidhive.AllProductsActivity has leaked window com.android.internal.policy.PhoneWindow$DecorView{2fa730c V.E...... R.....I. 0,0-802,301} that was originally added here at android.view.ViewRootImpl.<init>(ViewRootImpl.java:368) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:299) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85) at android.app.Dialog.show(Dialog.java:319) at com.example.androidhive.AllProductsActivity$LoadAllProducts.onPreExecute(AllProductsActivity.java:115) at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:604) at android.os.AsyncTask.execute(AsyncTask.java:551) at com.example.androidhive.AllProductsActivity.onCreate(AllProductsActivity.java:55) at android.app.Activity.performCreate(Activity.java:6237) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 09-15 21:40:23.909 14328-14328/com.example.androidhive D/gralloc_ranchu: gralloc_unregister_buffer: exiting HostConnection (is buffer-handling thread) 09-15 21:42:51.531 14328-14334/com.example.androidhive W/art: Suspending all threads took: 6.070ms 09-15 21:43:19.571 14328-14334/com.example.androidhive W/art: Suspending all threads took: 5.042ms 09-15 21:45:10.752 14328-14334/com.example.androidhive W/art: Suspending all threads took: 5.774ms 09-15 21:45:22.942 14328-14393/com.example.androidhive I/Process: Sending signal. PID: 14328 SIG: 9
Rispondi quotando
Originariamente inviata da Misterxxx
