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PORetrieving Data from PHP MySQL to Android List View
 

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  1. PORetrieving Data from PHP MySQL to Android List View
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    <p>I'm able to retrieve a data from my php mysql to my android but it seems their is a problem with my code when I'm trying to put it to my List View.</p> <p>Here's my Activity Codes</p> <pre><code>public class View extends Activity{ // Progress Dialog // Creating JSON Parser object JSONParser jParser = new JSONParser(); ArrayList&lt;HashMap&lt;String, String&gt;&gt; productsList; // url to get all products list private static String url_all_products = "http://atlantis-us.com/viewFile.php"; // JSON Node names private static final String TAG_NAME = "name"; ListView lv; // products JSONArray JSONArray products = null; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.all_products); // Get listview lv = (ListView) findViewById(R.id.list); // Hashmap for ListView productsList = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); new LoadAllProducts().execute(); } class LoadAllProducts extends AsyncTask&lt;String, String, String&gt; { @Override protected String doInBackground(String... arg0) { // TODO Auto-generated method stub // Building Parameters List&lt;NameValuePair&gt; params = new ArrayList&lt;NameValuePair&gt;(); JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params); Log.d("All Products: ", json.toString()); ListAdapter adapter = new SimpleAdapter( View.this, productsList, R.layout.list_item, new String[] { TAG_NAME}, new int[] {R.id.name }); // updating listview lv.setAdapter(adapter); return null; } } } </code></pre> <p>and Here's my JSONParser Class</p> <pre><code>public class JSONParser { static InputStream is = null; static JSONObject jObj = null; static String json = ""; // constructor public JSONParser() { } // function get json from url // by making HTTP POST or GET method public JSONObject makeHttpRequest(String url, String method, List&lt;NameValuePair&gt; 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; } } </code></pre> <p>this is what log cat says</p> <pre><code>10-26 14:57:53.673: I/Choreographer(1391): Skipped 61 frames! The application may be doing too much work on its main thread. 10-26 14:57:54.653: D/All Products:(1391): {"products":[{"name":"Ghalia"},{"name":"yuan"},{"name":"kevin"},{"name":"kevin"},{"name":"kevin"},{"name":"Ghalia"},{"name":"Ghalia"},{"name":"dbgg"},{"name":"Ghalia"},{"name":"Ghalia"},{"name":"test"}]} 10-26 14:57:54.663: W/dalvikvm(1391): threadid=11: thread exiting with uncaught exception (group=0x40a13300) 10-26 14:57:54.684: E/AndroidRuntime(1391): FATAL EXCEPTION: AsyncTask #1 10-26 14:57:54.684: E/AndroidRuntime(1391): java.lang.RuntimeException: An error occured while executing doInBackground() 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.os.AsyncTask$3.done(AsyncTask.java:299) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.FutureTask.setException(FutureTask.java:124) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.lang.Thread.run(Thread.java:856) 10-26 14:57:54.684: E/AndroidRuntime(1391): Caused by: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4607) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:835) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.View.requestLayout(View.java:15129) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.View.requestLayout(View.java:15129) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.View.requestLayout(View.java:15129) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.View.requestLayout(View.java:15129) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.view.View.requestLayout(View.java:15129) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.widget.AbsListView.requestLayout(AbsListView.java:1928) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.widget.ListView.setAdapter(ListView.java:488) 10-26 14:57:54.684: E/AndroidRuntime(1391): at com.example.mysql.View$LoadAllProducts.doInBackground(View.java:74) 10-26 14:57:54.684: E/AndroidRuntime(1391): at com.example.mysql.View$LoadAllProducts.doInBackground(View.java:1) 10-26 14:57:54.684: E/AndroidRuntime(1391): at android.os.AsyncTask$2.call(AsyncTask.java:287) 10-26 14:57:54.684: E/AndroidRuntime(1391): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 10-26 14:57:54.684: E/AndroidRuntime(1391): ... 5 more </code></pre> <p>is there anyone have thoughts whats causing the error? any suggestion will be appreciated. thank you.</p>
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