Android app main thread UI update intermittent crash issue

Occasional app crashes when developing tests on apps. The logs are as follows:

10-25 18:44:52.935 15290-15290/com.zzq.cnblogs e/androidruntime:fatal exception:main Process:com.zzq.cnblogs, PID:15290Java.lang.IllegalStateException:The content of the adapter have changed but ListView do not receive a notificatio N. Make sure the content of your adapter are not modified from a background thread, and only from the UI thread. Make sure your adapter calls notifydatasetchanged () while its content changes. [In ListView (16908298,classCOM.HANDMARK.PULLTOREFRESH.LIBRARY.PULLTOREFRESHLISTVIEW$INTERNALLISTVIEWSDK9) with Adapter (classAndroid.widget.HeaderViewListAdapter)] at Android.widget.ListView.layoutChildren (Listview.java:1555) at Android.widget.AbsListView.onLayout (Abslistview.java:2089) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.FrameLayout.layoutChildren (Framelayout.java:453) at Android.widget.FrameLayout.onLayout (Framelayout.java:388) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.LinearLayout.setChildFrame (Linearlayout.java:1671) at android.widget.LinearLayout.layoutVertical (Linearlayout.java:1525) at Android.widget.LinearLayout.onLayout (Linearlayout.java:1434) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.LinearLayout.setChildFrame (Linearlayout.java:1671) at android.widget.LinearLayout.layoutVertical (Linearlayout.java:1525) at Android.widget.LinearLayout.onLayout (Linearlayout.java:1434) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.RelativeLayout.onLayout (Relativelayout.java:1055) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.FrameLayout.layoutChildren (Framelayout.java:453) at Android.widget.FrameLayout.onLayout (Framelayout.java:388) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.support.v4.widget.DrawerLayout.onLayout (Drawerlayout.java:1043) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.FrameLayout.layoutChildren (Framelayout.java:453) at Android.widget.FrameLayout.onLayout (Framelayout.java:388) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout (Actionbaroverlaylayout.java:437) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.FrameLayout.layoutChildren (Framelayout.java:453) at Android.widget.FrameLayout.onLayout (Framelayout.java:388) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.LinearLayout.setChildFrame (Linearlayout.java:1671) at android.widget.LinearLayout.layoutVertical (Linearlayout.java:1525) at Android.widget.LinearLayout.onLayout (Linearlayout.java:1434) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.widget.FrameLayout.layoutChildren (Framelayout.java:453) at Android.widget.FrameLayout.onLayout (Framelayout.java:388) at Android.view.View.layout (View.java:14845) at Android.view.ViewGroup.layout (Viewgroup.java:4631) at Android.view.ViewRootImpl.performLayout (Viewrootimpl.java:2026) at Android.view.ViewRootImpl.performTraversals (Viewrootimpl.java:1783) at Android.view.ViewRootImpl.doTraversal (Viewrootimpl.java:1039) at Android.view.viewrootimpl$traversalrunnable.run (Viewrootimpl.java:5648) at Android.view.choreographer$callbackrecord.run (Choreographer.java:761) at Android.view.Choreographer.doCallbacks (Choreographer.java:574) at Android.view.Choreographer.doFrame (Choreographer.java:544) at Android.view.choreographer$framedisplayeventreceiver.run (Choreographer.java:747) at Android.os.Handler.handleCallback (Handler.java:733) at Android.os.Handler.dispatchMessage (HANDLER.J

which

Make sure the content of your adapter are not modified from a background thread, but only from the UI thread.

The hint of the exception shows that the UI interface has been updated in a background thread, and the UI interface must be updated by the UI thread. However, Android provides several ways to update the UI thread. The following is a handler way to update the UI, make a simple change. More about UI thread updates see: http://gqdy365.iteye.com/blog/2112471

1. Add a Handler property

    PrivateHandler Handlerlistview =NewHandler () {@Override Public voidhandlemessage (Message msg) {Super. Handlemessage (msg); Bundle Bundle=(Bundle) msg.obj; intRefreshtype = (int) Bundle.get ("Refreshtype"); LinkedList<Article> list = (linkedlist<article>) bundle.get ("article");  for(article article:list) {if(Refresh_type_up = =Refreshtype)                {Listdata.add (article); }Else if(Refresh_type_down = =Refreshtype) {Listdata.add (0, article);            }} pulltorefreshview.onrefreshcomplete ();        Adapter.notifydatasetchanged (); }    };

2. The part of the UI content will be updated directly

Pulltorefreshview.onrefreshcomplete (); Adapter.notifydatasetchanged ();

Change into

    New Message ();     New Bundle ();    Bundle.putint ("Refreshtype", Refreshtype);    Bundle.putserializable ("article", addlist);     = bundle;    Handlerlistview.sendmessage (msg);

Send the modified data to handler instead of directly manipulating the adapter of the ListView.

You can also consider updating using the Runonuithread method of activity.

Android app main thread UI update intermittent crash issue