Passing Data For List View From Asynctask To A Custom List Adapter Class

I need help on passing data for a custom list view, I can't seem to pass the data from the asynctask to the other java class. here is my code: import android.app.Activity; import

Solution 1:

First, you should really consider moving your Runnable block in doInBackground to onPostExecute because that's why it's designed for, UI-thread operations following a background task.

Please note that your AsyncTask type has changed.

You may also consider making your AsyncTask independent from your Activity by making it static. Then you would just pass the arguments the task needs in its constructor, plus a reference to the activity so that it can return the result in onPostExecute.

The idea:

privateListView mList;

publicvoidonCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);

    // ...
    mlist = ...
    newLoadAllProducts(this, username, params, ...); // PASS ALL THE PARAMTERS THE ASYNCTASK NEEDS
}

publicvoidpopulateList(ArrayList<HashMap<String, String>> productsList) {
    mList.setAdapter(newCustomInventoryList(this, productsList));
}

staticclassLoadAllProductsextendsAsyncTask<String, String, JSONObject> {
    privateString username;
    privateList<NameValuePair> params;
    privateActivity mActivity;

    publicLoadAllProducts(...) {
        username = ...;
        params = ...;
        mActivity = ...;
    }

    @OverrideprotectedStringdoInBackground(String... args) {
        ...

        // getting JSON string from URL
        json = jParser.makeHttpRequest(url_all_products, "GET", params);

        return json;
   }


   protectedvoidonPostExecute(JSONObject json) {
        try {
           // Checking for SUCCESS TAG
           int success = json.getInt(TAG_SUCCESS);

           if (success == 1) {
               // ... handle your JSON
           }
       } catch (JSONException e) {
           e.printStackTrace();
       }

       mActivity.populateList(productsList);
   }
}