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  • errror come on run time to connect my android app with mysql

    @androidlearner
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    Answer it

    my code this AllProductsActivity Class

    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&#95;all&#95;products = "http://192.168.56.1/android&#95;connect/get&#95;all&#95;products.php";

// JSON Node names
private static final String TAG&#95;SUCCESS = "success";
private static final String TAG&#95;PRODUCTS = "products";
private static final String TAG&#95;PID = "pid";
private static final String TAG&#95;NAME = "name";

// products JSONArray
JSONArray products = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.all&#95;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&#95;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, String> {

    /**
     * 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 String doInBackground(String... args) {
        // Building Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        // getting JSON string from URL
        JSONObject json = jParser.makeHttpRequest(url&#95;all&#95;products, "GET", params);

        // Check your log cat for JSON reponse
        Log.d("All Products: ", json.toString());

        try {
            // Checking for SUCCESS TAG
            int success = json.getInt(TAG&#95;SUCCESS);

            if (success == 1) {
                // products found
                // Getting Array of Products
                products = json.getJSONArray(TAG&#95;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&#95;PID);
                    String name = c.getString(TAG&#95;NAME);

                    // creating new HashMap
                    HashMap<String, String> map = new HashMap<String, String>();

                    // adding each child node to HashMap key => value
                    map.put(TAG&#95;PID, id);
                    map.put(TAG&#95;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&#95;ACTIVITY&#95;CLEAR&#95;TOP);
                startActivity(i);
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return null;
    }

    /**
     * After completing background task Dismiss the progress dialog
     * **/
    protected void onPostExecute(String file&#95;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&#95;item, new String[] { TAG&#95;PID,
                        TAG&#95;NAME},
                        new int[] { R.id.pid, R.id.name });
                // updating listview
                setListAdapter(adapter);
            }
        });

    }

}

    }

    My JsonParsert Classis here

    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 mehtod
public JSONObject makeHttpRequest(String url, String method,
                                  List<NameValuePair> params) {

    is = null;
    jObj = null;
    json = "";


    // Making HTTP request
    try {

        Log.i("url", "http://www.google.com");

        // check for request method
        if(method == "POST"){
            // request method is POST
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            String paramString = URLEncodedUtils.format(params, "utf-8");
            url += "?" + paramString;
            Log.i("url", url);
            HttpPost httpPost = new HttpPost(url);

            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;
            Log.i("url", url);
            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();
    }


    Log.i("Stage 1", "Stage 1");

    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");

                Log.i("1 ", line);
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    Log.i("Stage 2", "Stage 2");

    // 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());
    }

    Log.i("Stage 3", "Stage 3");

    // return JSON String
    return jObj;

}

    }

    Logcat error

    10-13 08:43:41.685: E/AndroidRuntime(1354): FATAL EXCEPTION: AsyncTask #1 10-13 08:43:41.685: E/AndroidRuntime(1354): Process: gurudev.additem, PID: 1354 10-13 08:43:41.685: E/AndroidRuntime(1354): java.lang.RuntimeException: An error occured while executing doInBackground() 10-13 08:43:41.685: E/AndroidRuntime(1354): at android.os.AsyncTask$3.done(AsyncTask.java:300) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.util.concurrent.FutureTask.setException(FutureTask.java:222) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.util.concurrent.FutureTask.run(FutureTask.java:242) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.lang.Thread.run(Thread.java:841) 10-13 08:43:41.685: E/AndroidRuntime(1354): Caused by: java.lang.NoSuchMethodError: org.apache.http.impl.client.DefaultHttpClient.execute 10-13 08:43:41.685: E/AndroidRuntime(1354): at gurudev.additem.JSONParser.makeHttpRequest(JSONParser.java:77) 10-13 08:43:41.685: E/AndroidRuntime(1354): at gurudev.additem.AllProductsActivity$LoadAllProducts.doInBackground(AllProductsActivity.java:128) 10-13 08:43:41.685: E/AndroidRuntime(1354): at gurudev.additem.AllProductsActivity$LoadAllProducts.doInBackground(AllProductsActivity.java:1) 10-13 08:43:41.685: E/AndroidRuntime(1354): at android.os.AsyncTask$2.call(AsyncTask.java:288) 10-13 08:43:41.685: E/AndroidRuntime(1354): at java.util.concurrent.FutureTask.run(FutureTask.java:237) 10-13 08:43:41.685: E/AndroidRuntime(1354): ... 3 more

    Android mysql PHP
    Answer it

 4 Answer(s)

  • @androidlearner
    Recommendations Offline Message

    about 9 years ago

    query("SELECT *FROM products")){ if($count = $result->num_rows){ $response["products"] = array(); while($row = $result->fetch_object()){ $product = array(); $product["pid"] = $row->pid; $product["name"] = $row->name; $product["price"] = $row->price; $product["description"] = $row->description; $product["created_at"] = $row->created_at; $product["updated_at"] = $row->updated_at; array_push($response["products"], $product); } $response["success"] = 1; // echoing JSON response echo json_encode($response); // echo $response["products"]; } $result->free(); } else { // no products found $response["success"] = 0; $response["message"] = "No products found"; // echo no users JSON echo json_encode($response); } ?>
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