IndexOutOfBoundsException when clear the header or item array

[mpkr]

I found this library and it's exactly what I'm looking for. My arrays for header and items are parsed by JSON string, and I have a refresh button on my app. So whenever I press the refresh button, I need to clear the adapter to remove old data and insert new data. But I got the error below:

04-08 16:23:52.151: E/AndroidRuntime(26743): FATAL EXCEPTION: main 04-08 16:23:52.151: E/AndroidRuntime(26743): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 04-08 16:23:52.151: E/AndroidRuntime(26743): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) 04-08 16:23:52.151: E/AndroidRuntime(26743): at java.util.ArrayList.get(ArrayList.java:308) 04-08 16:23:52.151: E/AndroidRuntime(26743): at com.pnminh.dfytask.adapter.ExpandableListAdapter.getChildrenCount(ExpandableListAdapter.java:94) 04-08 16:23:52.151: E/AndroidRuntime(26743): at com.diegocarloslima.fgelv.lib.WrapperExpandableListAdapter.getChildrenCount(WrapperExpandableListAdapter.java:49) 04-08 16:23:52.151: E/AndroidRuntime(26743): at com.diegocarloslima.fgelv.lib.FloatingGroupExpandableListView.drawFloatingGroupIndicator(FloatingGroupExpandableListView.java:446) 04-08 16:23:52.151: E/AndroidRuntime(26743): at com.diegocarloslima.fgelv.lib.FloatingGroupExpandableListView.dispatchDraw(FloatingGroupExpandableListView.java:171) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14856) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.widget.AbsListView.draw(AbsListView.java:5051) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13744) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14563) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.drawChild(ViewGroup.java:3316) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3153) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14856) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13744) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14563) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.drawChild(ViewGroup.java:3316) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3153) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13739) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14563) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.drawChild(ViewGroup.java:3316) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3153) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14856) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.support.v4.view.ViewPager.draw(ViewPager.java:2171) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13744) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14563) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.drawChild(ViewGroup.java:3316) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3153) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13739) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14563) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.drawChild(ViewGroup.java:3316) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3153) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13739) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14563) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.drawChild(ViewGroup.java:3316) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3153) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.draw(View.java:14856) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.widget.FrameLayout.draw(FrameLayout.java:467) 04-08 16:23:52.151: E/AndroidRuntime(26743): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2621) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13744) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.View.getDisplayList(View.java:13786) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.HardwareRenderer$GlRenderer.buildDisplayList(HardwareRenderer.java:1411) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:1359) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewRootImpl.draw(ViewRootImpl.java:2677) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2541) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2156) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1251) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6379) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:791) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.Choreographer.doCallbacks(Choreographer.java:591) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.Choreographer.doFrame(Choreographer.java:561) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:777) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.os.Handler.handleCallback(Handler.java:730) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.os.Handler.dispatchMessage(Handler.java:92) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.os.Looper.loop(Looper.java:137) 04-08 16:23:52.151: E/AndroidRuntime(26743): at android.app.ActivityThread.main(ActivityThread.java:5493) 04-08 16:23:52.151: E/AndroidRuntime(26743): at java.lang.reflect.Method.invokeNative(Native Method) 04-08 16:23:52.151: E/AndroidRuntime(26743): at java.lang.reflect.Method.invoke(Method.java:525) 04-08 16:23:52.151: E/AndroidRuntime(26743): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit

Could you walk me through this problem? Thank you very much

[diegocarloslima]

Hello mpkr. Thanks for reporting this issue. This weekend I'll take a look on that.

[mpkr]

Thanks for response. I'm getting sick with the base expandable listview.

[diegocarloslima]

Done! :+1: