For ~20% of my user-base, they are getting a Unable to start activity ComponentInfo{..} : java.lang.NullPointerExceptionFATAL Exception. I monitor the exceptions remotely via Crashlytics, so I have the stacktrace. The only problem is, there is no line number.
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.falk.fietsroutes.app/com.falk.fietsroutes.app.HomeActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2282)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2340)
at android.app.ActivityThread.access$800(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5293)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: java.lang.NullPointerException
at com.falk.fietsroutes.app.SearchResultsFragment.onCreateView()
at android.app.Fragment.performCreateView(Fragment.java:1700)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1044)
at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1853)
at android.app.Activity.performCreate(Activity.java:5392)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2246)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2340)
at android.app.ActivityThread.access$800(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5293)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(NativeStart.java)
I've read many reports from people with the same error, which all came down to something in their code being null (ofcourse, because it's a nullpointer). But I can't track it down because I cannot reproduce it (I only have one device which seems to work fine), and the stack trace doesn't help.
At first sight I couldn't find anything that could be null in SearchResultsFragment.onCreateView() (because that is where the NPE gets thrown right?)
If any of you could point me in the right direction or know how I could get the line number where the exception, it would be appreciated!
Here is the code of SearchResultsFragment.onCreateView():
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Set orientation
getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
// Get the rootview in the fragment
View rootView = inflater.inflate(R.layout.fragment_search_results, container, false);
// Get settings instance
mSettings = Settings.getInstance();
// Init the mRoutes arraylist
mRoutes = new ArrayList<Route>();
// Get the gridview and set the adapters (animation adapter and the gridview adapter)
GridView gridView = (GridView) rootView.findViewById(R.id.gridview);
SearchResultCardsAdapter searchAdapter = new SearchResultCardsAdapter(getActivity(), inflater);
SwingBottomInAnimationAdapter swingBottomInAnimationAdapter = new SwingBottomInAnimationAdapter(searchAdapter);
swingBottomInAnimationAdapter.setAbsListView(gridView);
swingBottomInAnimationAdapter.setInitialDelayMillis(300);
mAdapter = swingBottomInAnimationAdapter;
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Log.d("Grid item click", "Clicked!");
Route route = mRoutes.get(i);
Intent routeDetailIntent = new Intent(getActivity(), RouteDetailActivity.class);
routeDetailIntent.putExtra("routeId", route.id);
// Analytics
Tracker t = ((AppDelegate) getActivity().getApplication()).getTracker(
AppDelegate.TrackerName.APP_TRACKER);
// Build and send an Event.
t.send(new HitBuilders.EventBuilder()
.setCategory("Routes")
.setAction("View")
.setLabel(Integer.toString(route.id))
.build());
startActivity(routeDetailIntent);
}
});
gridView.setAdapter(mAdapter);
// Set the infinite scroll listener
gridView.setOnScrollListener(new EndlessScrollListener() {
#Override
public void onLoadMore(int page, int totalItemsCount) {
// Triggered only when new data needs to be appended to the list
// Add whatever code is needed to append new items to your AdapterView
loadMoreRoutes(page, totalItemsCount);
// or customLoadMoreDataFromApi(totalItemsCount);
}
});
// Show the progressbar
mProgressBar = (SmoothProgressBar)rootView.findViewById(R.id.search_results_progressbar);
mProgressBar.progressiveStart();
// Inflate the layout for this fragment
return rootView;
}
Maybe others will benefit from my mistake. The problem was that I used pro-guard and Android Studio to sign my Android App, and I had to keep-attributes some properties so Crashlytics could read the line number and class name.
-keepattributes SourceFile,LineNumberTable
Via
Related
Can someone help me?
I don't know why have I javaNullExepction in LayoutInflater.Here is my code :
This code is in fragment :
ServiceManager.getInstance().getCampaign( new Callback <Campaign>() {
#Override
public void success(Campaign campaign, Response response) {
campaigns = campaign;
adapter = new RecyclerCampaignAdapter(getActivity(), campaign);
recyclerView.setAdapter(adapter);
recyclerView.addItemDecoration(new HorizontalDividerItemDecoration.Builder(getActivity()).marginProvider(adapter).showLastDivider().build());
adapter.notifyDataSetChanged();
if (progressBar.isShown()) {
progressBar.setVisibility(View.INVISIBLE);
}
}
#Override
public void failure(RetrofitError retrofitError) {
Toast.makeText(getActivity(), "Failed" + retrofitError, Toast.LENGTH_SHORT).show();
progressBar.setVisibility(View.GONE);
}
});
here is code in my adapter :
public RecyclerCampaignAdapter (Activity activity, Campaign campaignList) {
this.activity = activity;
this.campaignList = campaignList;
this.inflater= LayoutInflater.from(activity);
}
I think getActivity() == null I don't know how can I fix it.
java.lang.NullPointerException
at android.view.LayoutInflater.from(LayoutInflater.java:212)
at tr.org.yyd.yeryuzudoktorlari.adapter.RecyclerCampaignAdapter.(RecyclerCampaignAdapter.java:38)
at tr.org.yyd.yeryuzudoktorlari.fragment.CampaignFragment$1.success(CampaignFragment.java:69)
at tr.org.yyd.yeryuzudoktorlari.fragment.CampaignFragment$1.success(CampaignFragment.java:65)
at retrofit.CallbackRunnable$1.run(CallbackRunnable.java:45)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5756)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
at dalvik.system.NativeStart.main(Native Method)
EDIT:
I use replace method on frgment transaction when user clicks on an item from menu.So CampaignFragment works okey when the user clicks in first time but it crashes when user clicks again while it is still on.
If I change into another fragment and come back to CampaginFragment there is no crash.
The answer just that.I don't know how that fix it but it worked.It's just a control.
if (getActivity() != null) {
adapter = ....
There are other related issues on this but they do not address my situation (their error code has to do with some sort of recycling and/or bad cast calls by client code).
My situation is more complex.
I have some code where the user can pull up a library of photos.
The thing is, its working just fine on 7 phones that I have, all running API's 19+.
However I have a Google Nexus 4.3 that's running API 17. And I get this crash log which has none of my code, only library code. If you can advise how I might be able to code a work around I'd be all ears:
FATAL EXCEPTION: main
java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
at android.widget.GridView.onMeasure(GridView.java:1042)
at android.view.View.measure(View.java:15848)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:477)
at android.view.View.measure(View.java:15848)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:477)
at android.view.View.measure(View.java:15848)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:15848)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:15848)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2189)
at android.view.View.measure(View.java:15848)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1905)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1104)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1284)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
at android.view.Choreographer.doCallbacks(Choreographer.java:562)
at android.view.Choreographer.doFrame(Choreographer.java:532)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Update
My offending class is this:
//Special class that works with the UIL
//The holder gets re-used and gets the new properties from this
static class ReusableGridViewView extends FrameLayout
{
public ImageView imageView;
public ProgressBar progressBar;
public ReusableGridViewView(Context context)
{
super(context);
setLayoutParams(new LayoutParams((int)(0.325* ViewHelper.screenWidthPX(context)),(int)(0.325* ViewHelper.screenWidthPX(context))));
imageView = new ImageView(context);
progressBar = new ProgressBar(context);
addView(imageView);
addView(progressBar);
}
}
Im using the Ultimate Image Loader library and this is the code that uses the above class.
//I do NOT call this directly, the listview decides when re use a convert view and passes it accordingly
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
final ViewHolder holder;
View view = convertView;
if (view == null)
{
view = new ReusableGridViewView(parent.getContext());
holder = new ViewHolder();
assert view != null;
holder.imageView = ((ReusableGridViewView)view).imageView;
holder.progressBar = ((ReusableGridViewView)view).progressBar;
holder.imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
//System.out.println(" " + holder + " ||| " + holder.imageView);
ImageLoader.getInstance()
.displayImage(IMAGE_URLS[position], holder.imageView, options, new SimpleImageLoadingListener()
{
#Override
public void onLoadingStarted(String imageUri, View view)
{
holder.progressBar.setProgress(0);
holder.progressBar.setVisibility(View.VISIBLE);
}
#Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason)
{
holder.progressBar.setVisibility(View.GONE);
}
#Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage)
{
holder.progressBar.setVisibility(View.GONE);
}
}, new ImageLoadingProgressListener()
{
#Override
public void onProgressUpdate(String imageUri, View view, int current, int total)
{
holder.progressBar.setProgress(Math.round(100.0f * current / total));
}
});
//set all as unselected
((ReusableGridViewView) view).removeSelectionBorder();
for(int i = 0; i < SELECTED_IMAGES.length; i++)
{
if(SELECTED_IMAGES[i] == position)
{
//set cell to selected
((ReusableGridViewView) view).addSelectionBorder();
}
}
return view;
}
So it turns out that on API < 17 FrameLayout can't be cast correctly to AbsListView params.
What I did was set AbsListView LayoutParams instead of FrameLayout params:
setLayoutParams(new AbsListView.LayoutParams(100,100));
I'm not sure if this is going to help you or what, but this crash used to happen for me once I was using AndroidSlidingUpPanel and adding a view inside of its content layout programmatically. After searching and trying many different solutions I came up with this solution; I added the following layout as the first child of the content layout and the crash was solved.
<android.widget.AbsListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone"
app:layout_constraintTop_toTopOf="parent" />
I want to go from one fragment to another fragment.
First I'm passing some data, then I'm refreshing my adapter and at least I;m going to new fragment.
My Code:
public class TestFragment extends Fragment {
private String horoscope_sign;
private Bundle bundle;
private FragmentItemHoroscopePage itemHoroscope;
private FragmentManager manager;
private FragmentTransaction transaction;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.test_fragment, container, false);
horoscope_sign = getArguments().getString("horoscope_sign");
bundle = new Bundle();
itemHoroscope = new FragmentItemHoroscopePage();
manager = getFragmentManager();
// Resetting adapter
if(FragmentItemHoroscopePage.getAdapter() != null) {
FragmentItemHoroscopePage.getAdapter().notifyDataSetChanged();
}
// Going to another fragment
transaction = manager.beginTransaction();
bundle.putString("horoscope_sign", horoscope_sign);
itemHoroscope.setArguments(bundle);
transaction.replace(R.id.mainContainer, itemHoroscope, "ItemHoroscope");
transaction.addToBackStack("ItemHoroscope");
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
transaction.commit();
return view;
}
}
I'm getting error on checking adapter, and I don't know why. Funny thing is if I putt whole code in OnButtonClick it is working. How can I fix this??
LogCat:
FATAL EXCEPTION: main
10-15 21:40:01.050:
java.lang.IllegalStateException: Recursive entry to executePendingTransactions
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1456)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:482)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.dataSetChanged(ViewPager.java:897)
at android.support.v4.view.ViewPager$PagerObserver.onChanged(ViewPager.java:2824)
at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:37)
at android.support.v4.view.PagerAdapter.notifyDataSetChanged(PagerAdapter.java:276)
at com.kiko.bmgu.crnobelo.horoscope.TestFragment.onCreateView(TestFragment.java:39)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1504)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:942)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1121)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1484)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:450)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4929)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:798)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:565)
at dalvik.system.NativeStart.main(Native Method)
I don't know what is problem, but I put try and catch clause around and it is working now:
try {
if(FragmentItemHoroscopePage.getAdapter() != null) {
System.out.println("REFRESH");
FragmentItemHoroscopePage.getAdapter().notifyDataSetChanged();
}
} catch (Exception e) {
e.printStackTrace();
}
In my MainActivity I call this code to change to a new fragment, I pass a bundle with parcelable object, itemModel to the fragment:
Bundle bundle = new Bundle();
bundle.putParcelable(ItemModel.ParcelableKey, itemModel);
fragment = new AppFragment();
fragment.setArguments(bundle);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.frame_container, fragment).addToBackStack(null).commit();
In the fragment, I receive the parcel back like this:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mItemModel = getArguments().getParcelable(ItemModel.ParcelableKey);
//....other code.....
}
When I test it locally, the code works fine on my test device, mItemModel is able to be retrieved back properly, however, I have integrated crash report system into the app (Crashlytics), and the report states a log like this on a release:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.temp.test/com.temp.test.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2114)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139)
at android.app.ActivityThread.access$700(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4960)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: java.lang.NullPointerException
at android.os.Parcel.readStringArray(Parcel.java:931)
at com.temp.test.data.ItemModel.<init>(ItemModel.java:478)
at com.temp.test.data.ItemModel.<init>(ItemModel.java:23)
at com.temp.test.data.ItemModel$1.createFromParcel(ItemModel.java:445)
at com.temp.test.data.ItemModel$1.createFromParcel(ItemModel.java:443)
at android.os.Parcel.readParcelable(Parcel.java:2103)
at android.os.Parcel.readValue(Parcel.java:1965)
at android.os.Parcel.readMapInternal(Parcel.java:2226)
at android.os.Bundle.unparcel(Bundle.java:223)
at android.os.Bundle.getParcelable(Bundle.java:1165)
at com.temp.test.fragments.AppFragment.onCreateView(AppFragment.java:98)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:829)
at android.app.FragmentManagerImpl.moveTo## Heading ##State(FragmentManager.java:1035)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1017)
at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1804)
at android.app.Activity.performCreate(Activity.java:5206)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2078)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139)
at android.app.ActivityThread.access$700(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4960)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(NativeStart.java)
at com.temp.test.fragments.AppFragment.onCreateView(AppFragment.java:98) <-- This error line leads to this line in the source code:
mItemModel = getArguments().getParcelable(ItemModel.ParcelableKey);
It is very strange because it works well in my local device. So I dived a little deeper into Bundle's source code, I noticed that in unparcel(), it has a checking like this at the beginning:
synchronized void unparcel() {
if (mParcelledData == null) {
if (DEBUG) Log.d(TAG, "unparcel " + Integer.toHexString(System.identityHashCode(this)) + ": no parcelled data");
return;
}
//....other code.....
}
The strange thing is that mParcelledData should be null in my case, because I created Bundle like this Bundle bundle = new Bundle(); as shown in my code snippet above, so in my case it should be using mMap instead of mParcelledData.
Question: what are the possible cases that getArguments() in fragment's onCreateView() will return a Bundle with non-null mParcelledData?
OR
In what cases that mItemModel = getArguments().getParcelable(ItemModel.ParcelableKey); will perform differently in my local test device vs production release for end user?
excuse the trouble I was trying to make a listview for parsing a page for my app, I'll explain: I have a actionbar formed by Fragment.
When instazia the fragment, opening the app the first time "getActivity" does not return null, is the next time, when I start the AsyncTask
In the fragment in which I will stop parsing this error:
java.lang.NullPointerException
at android.widget.ArrayAdapter.init(ArrayAdapter.java:310)
at android.widget.ArrayAdapter.<init>(ArrayAdapter.java:104)
at com.megadown.megacodownloader.ParsingArrayAdapter.<init>(ParsingArrayAdapter.java:30)
at com.megadown.megacodownloader.Tab_Search$ParsingPaginaWeb.onPostExecute(Tab_Search.java:264)
at com.megadown.megacodownloader.Tab_Search$ParsingPaginaWeb.onPostExecute(Tab_Search.java:125)
at android.os.AsyncTask.finish(AsyncTask.java:631)
at android.os.AsyncTask.access$600(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)
Code Java that refers:
protected void onPostExecute(String result)
{
// dopo che ho eseguito il parsing mostro i dati nella listview
adapter = new ParsingArrayAdapter(myActivity, titoli, descrizioni,immagini);
lista.setAdapter(adapter);
}
If you want I can post the code of the ArrayAdapter.
Thank you in advance
First, make sure myActivity has the correct value:
protected void onPostExecute(String result) {
Activity myActivity = getActivity();
adapter = new ParsingArrayAdapter(myActivity, titoli, descrizioni,immagini);
lista.setAdapter(adapter);
}
Next, point is, you can't be sure that your activity and fragment is still active in onPostExecute().
For example, the user could have pressed 'back' button or rotated the screen, which would re-create the activites and fragments.
So, the good code is:
protected void onPostExecute(String result) {
Activity myActivity = getActivity();
if (myActivity==null) return; // Fragment not active anymore, bail out
adapter = new ParsingArrayAdapter(myActivity, titoli, descrizioni,immagini);
lista.setAdapter(adapter);
}
Fragment's getActivity() will only return expectable value while the associated activity has done onCreate method.