Getting Execute before finishing the task Android

Question

Hi I'm running the Asynctask in my activity and getting the data from the server. In onPostExecute metod I'm inserting the data in Database now I want to pass those ids in two different fragments I'm passing the the ids by following code:

Bundle bundle = new Bundle();
    bundle.putStringArray(BConstant.TAXONOMY_TID, dbtids);
    bundle.putStringArray(BConstant.PRODUCT_CATEGORY_NAMES,
            dblistProCategory);
    ProductCategoryFragment.newInstance(bundle);

    // ProductDetailsFragment
    Bundle bundleForProductList = new Bundle();
    bundleForProductList
            .putStringArray(BConstant.TAXONOMY_TID, dbtids);
    bundleForProductList.putString(BConstant.WEB_SERVICES_COOKIES,
            cookie);
    bundleForProductList.putStringArray(
            BConstant.PRODUCT_CATEGORY_NAMES, dblistProCategory);
    ProductListFragment.newInstance(bundleForProductList);

But above lines of code get executed before the AsyncTask fininshed. but i have written this line new CategoryFrag().execute(); above this code. what should i do.

Edited

protected void onPostExecute(JSONArray result) {
        listItems = new ArrayList<String>();
        for (int i = 0; i < result.length(); i++) {
            try {
                listItems
                        .add(result.getJSONObject(i)
                                .getString(BConstant.NAME_CONSTANT)
                                .toString());
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        listProCategory = listItems.toArray(new String[0]);
  returnsTID = saDatabaseHandler.getProductCategoryTID();
        for (int i = 0; i < tids.length; i++) {
            if (!returnsTID.contains(tids[i])) {
                saDatabaseHandler.insertProductCategoryData(
                        tids[i], listProCategory[i]);
                
            }
        }
        getOfflineData();
  }

LOGCAT:

    02-02 11:41:00.451: E/AndroidRuntime(20901): FATAL EXCEPTION: main
    02-02 11:41:00.451: E/AndroidRuntime(20901): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.abc.xyz/com.abc.xyz.ProductListActivity}: java.lang.NullPointerException
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2114)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.ActivityThread.access$700(ActivityThread.java:143)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.os.Handler.dispatchMessage(Handler.java:99)
    02-02 11 :41:00.451: E/AndroidRuntime(20901):   at android.os.Looper.loop(Looper.java:137)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.ActivityThread.main(ActivityThread.java:4960)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at java.lang.reflect.Method.invokeNative(Native Method)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at java.lang.reflect.Method.invoke(Method.java:511)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at dalvik.system.NativeStart.main(Native Method)
    02-02 11:41:00.451: E/AndroidRuntime(20901): Caused by: java.lang.NullPointerException
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at java.util.Arrays$ArrayList.<init>(Arrays.java:38)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at java.util.Arrays.asList(Arrays.java:154)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.widget.ArrayAdapter.<init>(ArrayAdapter.java:141)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at com.abc.xyz.ProductCategoryFragment$DisplayProductCategoryListArrayAdapter.<init>(ProductCategoryFragment.java:175)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at com.abc.xyz.ProductCategoryFragment.onActivityCreated(ProductCategoryFragment.java:113)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:848)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1017)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1804)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.Activity.performCreate(Activity.java:5206)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2078)
    02-02 11:41:00.451: E/AndroidRuntime(20901):    ... 11 more

@Raghunandan let me clear the question i am passing the ids by calling the above code in fragments. So first i want to finish the AsyncTask of activity class then only i want to start the fragment class code. — user3154663, Feb 02 '14 at 06:00
@Raghunandan i want to wait the next line of code until Asynctask get finish. what should i do. in activity class. — user3154663, Feb 02 '14 at 06:07
@Amrola same problem before completing the async task of activity class fragmnet class trying to get the ids — user3154663, Feb 02 '14 at 06:08
post your logcat , so we could see whats wrong ? and post your asynctask code — , Feb 02 '14 at 06:10
adapter = new DisplayProductCategoryListArrayAdapter(getActivity(), dblistProCategory, dbimgBitmapUrls); — user3154663, Feb 02 '14 at 06:22
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/46621/discussion-between-amrola-and-user3154663) — , Feb 02 '14 at 06:23
@user3154663 what is line 175 `ProductCategoryFragment.java`? Sonmething on that line is null. Post the relevant code so that we can help you — Raghunandan, Feb 02 '14 at 07:33

score 0 · Answer 1 · answered Feb 02 '14 at 06:37

call a method defined in your activity from your onPostExecute method. And write the above code inside that method.

If the async task is in another class, the pass context to the async task, and in the onPostExecute method after fetching data from the db, do this:

((YourCallingActivity)mContext).methodName();

Getting Execute before finishing the task Android

Edited

1 Answers1