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POIndexOutOfBoundsException: Invalid index 0, size is 0
 

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  1. POIndexOutOfBoundsException: Invalid index 0, size is 0
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    <p>My code is throwing an IndexOutOfBounds exception at some point (can't figure out where). The exception log below:</p> <pre><code>12-09 15:03:59.962: ERROR/AndroidRuntime(8735): FATAL EXCEPTION: main Process: br.com.app, PID: 8735 java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) at java.util.ArrayList.get(ArrayList.java:308) at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:225) at android.widget.AbsListView.obtainView(AbsListView.java:2240) at android.widget.ListView.measureHeightOfChildren(ListView.java:1263) at android.widget.ListView.onMeasure(ListView.java:1175) at android.view.View.measure(View.java:16458) at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:719) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:455) at android.view.View.measure(View.java:16458) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) at android.view.View.measure(View.java:16458) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327) at android.view.View.measure(View.java:16458) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2289) at android.view.View.measure(View.java:16458) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1914) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1111) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1293) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5582) 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:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4998) 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:777) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593) at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>As you can see, this log doesn't show any class I wrote myself. To understand better what is happening, here is what my app do at this point: - A http request is made to fetch an array of data from server - I use this array to populate a ListView with several options user can choose</p> <p>After a few tests, I've noticed that this error only occurs when the jsonArray I get from server has between 1 and 7 elements. If a specific search returns, let's say, 0, 7, 40 items, everything is ok. When I get only one element, or 4 elements, the app crashes.. No idea at all why this happens...</p> <p>the method below is executed right after I get response from server:</p> <pre><code>private void didDownload(JSONObject result) { try { listingsArray = concatArray(listingsArray, result.getJSONArray("empresas")); Location currentLocation = PreferenceData.getUserLocation(myContext); for(int i = 0, j = listingsArray.length(); i &lt; j; i++){ JSONObject c = listingsArray.getJSONObject(i); JSONObject listing = c.getJSONObject("listing"); double listingLatitude = listing.getDouble("latitude"); double listingLongitude = listing.getDouble("longitude"); Location listingLocation = new Location(""); listingLocation.setLongitude(listingLongitude); listingLocation.setLatitude(listingLatitude); float distance = currentLocation.distanceTo(listingLocation); listingsArray.getJSONObject(i).put("distancia", distance); } imageURLs = new String[listingsArray.length()]; for(int i = 0; i &lt; listingsArray.length(); i++) { String url = ImageUrlBuilder.buildURL(listingsArray.getJSONObject(i).getString("thumb"), myContext, "thumb"); imageURLs[i] = url; } } catch (JSONException e) { Log.e(TAG, "Erro no Json"); } tamanho = listingsArray.length(); cacheUpdated(); } </code></pre> <p>while debugging, step by step, the method below was the last one I could follow before the crash (this one runs in a worker thread, from another class, to load images into my listview items)</p> <pre><code>class PhotosLoader implements Runnable { PhotoToLoad photoToLoad; PhotosLoader(PhotoToLoad photoToLoad){ this.photoToLoad=photoToLoad; } @Override public void run() { try{ if(imageViewReused(photoToLoad)) return; Bitmap bmp=getBitmap(photoToLoad.url); memoryCache.put(photoToLoad.url, bmp); if(imageViewReused(photoToLoad)) return; BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad); handler.post(bd); //here is where I can't debug further... The IndexOutOfBounds exception isn't caught below... }catch(Exception e){ e.printStackTrace(); Crashlytics.logException(e); } } } </code></pre> <p>I'm not sure if these methods have something to do with the error... Thanks in advance for any directions on this!</p> <p>[UPDATE] getView():</p> <pre><code>/** * Create a new ImageView when requested, filling it with a * thumbnail or a blank image if no thumb is ready yet. */ @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; // check if user reached end of list if(shouldLoadMoreData(position)){ loadMoreData(); } // can we recycle an old view? if(convertView == null) { convertView = mInflater.inflate(R.layout.listing_listview_item, parent, false); holder = new ViewHolder(); holder.listingTitle = (TextView) convertView.findViewById(R.id.listingTitle); holder.distancia = (TextView) convertView.findViewById(R.id.distancia); holder.address = (TextView) convertView.findViewById(R.id.address); holder.promotions = (TextView) convertView.findViewById(R.id.promotions); holder.img = (ImageView) convertView.findViewById(R.id.img); holder.loading = (ProgressBar) convertView.findViewById(R.id.loading); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } try { JSONObject c = listingsArray.getJSONObject(position); JSONObject listing = c.getJSONObject("listing"); double distance = c.getDouble("distancia"); String dist = (distance &gt; 1000) ? String.format("%.1fkm", distance/1000) : String.format("%dm", (int)distance); int p = c.getInt("promotions"); String promotions = (p &gt; 1) ? p+" Ofertas" : p+" Oferta"; holder.listingTitle.setText(listing.getString("title")); holder.address.setText(listing.getString("address")); holder.promotions.setText(promotions); holder.distancia.setText(dist); } catch (JSONException e) { e.printStackTrace(); } // do we have a thumb stored in cache? imageLoader.DisplayImage(imageURLs[position], holder.img, holder.loading); return convertView; } </code></pre>
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    1. USLucas Jota
    1. USLucas Jota
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    1. COHave you tried debugging it step by step? Where does the error pops up?
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    2. COCan you show the implementation of the `.post()` method in the `Handler` class?
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    3. CO@NitroNbg I did it, and runned every step until reach handler.post(bd); statement. This is running in a worker thread, so I've tried sleep() and the exception is thrown before the thread wakes up
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      1. POIndexOutOfBoundsException: Invalid index 0, size is 0
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