java - Android Application Not Responding Error -

i twice anr when swipe app recent activities. , app works fine anr when switch landscape mode. app works expected long not oriented landscape or swiped recent apps. can point out doing wrong here. thanks

myservice.java:

public class myservice extends service {  public static boolean started = false; public static string transaction_done = "com.example.root.project"; private websocketclient client = null; public static sqlitedatabase mydatabase = null;  @nullable @override public ibinder onbind(intent intent) {     return null; }  @override public int onstartcommand(final intent intent, int flags, int startid) {      if(started){         string message = intent.getstringextra("message");         if(client != null){             client.send(message);         }     }      if (!started) {         mydatabase = openorcreatedatabase("messages.db", mode_private, null);         mydatabase.execsql("create table if not exists messages " +                 "(tag text primary key, message text);");         started = true;         uri uri = null;         try {             uri = new uri(intent.getstringextra("ip"));         } catch (urisyntaxexception e) {             e.printstacktrace();         }         client = new websocketclient(uri) {             @override             public void onopen(serverhandshake serverhandshake) {                  jsonobject jsonobject = null;                  try {                     jsonobject = new jsonobject();                     jsonobject.accumulate("addme",intent.getstringextra("name"));                 } catch (jsonexception e) {                     e.printstacktrace();                 }                  client.send(jsonobject.tostring());              }              @override             public void onmessage(string message) {                  jsonobject jsonobject = null;                 try {                     jsonobject = new jsonobject(message);                 } catch (jsonexception e) {                     e.printstacktrace();                 }                  if (jsonobject.has("resolve")) {                     pendingintent notificintent = pendingintent.getactivity(getapplicationcontext(), 0,                             new intent(getapplicationcontext(), mainactivity.class), 0);                      // builds notification                     notificationcompat.builder mbuilder =                             null;                     try {                         mbuilder = new notificationcompat.builder(getapplicationcontext())                                 .setsmallicon(r.drawable.add)                                 .setcontenttitle(jsonobject.getstring("name"))                                 .setticker(jsonobject.getstring("resolve"))                                 .setcontenttext(jsonobject.getstring("destination"));                     } catch (jsonexception e) {                         e.printstacktrace();                     }                      // defines intent fire when notification clicked                     mbuilder.setcontentintent(notificintent);                      // set default notification option                     // default_sound : make sound                     // default_vibrate : vibrate                     // default_lights : use default light notification                     mbuilder.setdefaults(notification.default_all);                      // auto cancels notification when clicked on in task bar                     mbuilder.setautocancel(true);                      // gets notificationmanager used notify user of background event                     notificationmanager mnotificationmanager =                             (notificationmanager) getapplicationcontext().getsystemservice(context.notification_service);                      // post notification                     mnotificationmanager.notify((int) system.currenttimemillis(), mbuilder.build());                 } else if (jsonobject.has("remove")) {                      try {                         string tag = jsonobject.getstring("remove");                         mydatabase.execsql("delete messages tag = " + tag + ";");                     } catch (jsonexception e) {                         e.printstacktrace();                     }                       if (isforeground(transaction_done)) {                         intent broadcast = new intent(transaction_done);                         broadcast.putextra("message", message);                         sendbroadcast(broadcast);                     }                 } else {                      try {                         mydatabase.execsql("insert messages (tag, message) values ('" +                                 jsonobject.getstring("tag") + "', '" + message + "');");                     } catch (jsonexception e) {                         e.printstacktrace();                     }                       if (isforeground(transaction_done)) {                         intent broadcast = new intent(transaction_done);                         broadcast.putextra("message", message);                         sendbroadcast(broadcast);                     }                 }             }              @override             public void onclose(int i, string s, boolean b) {                 log.d("mytag", "onclose: websocket closing ");                 toast.maketext(getapplicationcontext(),"closing websocket",toast.length_long).show();             }              @override             public void onerror(exception e) {                 log.i("websocket", "error " + e.getmessage());             }         };         client.connect();     }     return start_sticky; }   @override public void ontaskremoved(intent rootintent) {     super.ontaskremoved(rootintent);     toast.maketext(getapplicationcontext(),"closing client",toast.length_long).show();     client.close(); }  @override public void ondestroy() {     super.ondestroy();     log.d("mytag", "ondestroy: service being destroyed ");     try {         client.closeblocking();     } catch (interruptedexception e) {         e.printstacktrace();     }     toast.maketext(this,"service closing on destroy called",toast.length_long).show(); }  public boolean isforeground(string mypackage) {     activitymanager manager = (activitymanager) getsystemservice(activity_service);     list<activitymanager.runningtaskinfo> runningtaskinfo = manager.getrunningtasks(1);     componentname componentinfo = runningtaskinfo.get(0).topactivity;     return componentinfo.getpackagename().equals(mypackage); }  } 

mainactivity.java:

public class mainactivity extends appcompatactivity {  private customadapter adapter; private string name; private string ip;  @override public boolean onoptionsitemselected(menuitem item) {     int id = item.getitemid();     if (id == r.id.add) {         final alertdialog.builder builder = new alertdialog.builder(this);         builder.settitle("title");         final view viewinflated = getlayoutinflater().inflate(r.layout.custom_dialog_layout, null);         builder.setview(viewinflated);          // set buttons         builder.setpositivebutton("publish", new dialoginterface.onclicklistener() {             @override             public void onclick(dialoginterface dialog, int which) {                  edittext edittext = (edittext) viewinflated.findviewbyid(r.id.dialogtitle);                 edittext edittext2 = (edittext) viewinflated.findviewbyid(r.id.dialogdesc);                 string title = edittext.gettext().tostring().trim();                 string desc = edittext2.gettext().tostring().trim();                 jsonobject jsonobject = new jsonobject();                 try {                     jsonobject.accumulate("title", title);                     jsonobject.accumulate("desc", desc);                     jsonobject.accumulate("name",name);                 } catch (jsonexception e) {                     e.printstacktrace();                 }                 intent intent = new intent(mainactivity.this,myservice.class);                 intent.putextra("message",jsonobject.tostring());                 startservice(intent);             }         });         builder.setnegativebutton("cancel", new dialoginterface.onclicklistener() {             @override             public void onclick(dialoginterface dialog, int which) {                 dialog.cancel();             }         });          builder.show();         return true;     }     return super.onoptionsitemselected(item); }  @override public boolean oncreateoptionsmenu(menu menu) {     getmenuinflater().inflate(r.menu.main, menu);     return true; }  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      if(mypreferences.isfirst(this)) {          final alertdialog.builder builder = new alertdialog.builder(this);         builder.settitle("title");         final view viewinflated = getlayoutinflater().inflate(r.layout.login_dialog, null);         builder.setview(viewinflated);          // set buttons         builder.setpositivebutton("publish", new dialoginterface.onclicklistener() {             @override             public void onclick(dialoginterface dialog, int which) {                  edittext edittext = (edittext) viewinflated.findviewbyid(r.id.dialogname);                 edittext edittext2 = (edittext) viewinflated.findviewbyid(r.id.dialogip);                 name = edittext.gettext().tostring().trim();                 ip = edittext2.gettext().tostring().trim();                 intent intent = new intent(mainactivity.this, myservice.class);                 intent.putextra("name", name);                 intent.putextra("ip", ip);                 mainactivity.this.getsharedpreferences("my_preferences",mode_private).edit().putstring("name",name).putstring("ip",ip).commit();                 startservice(intent);                 listview listview = (listview) findviewbyid(r.id.listview);                 adapter = new customadapter(mainactivity.this);                 listview.setadapter(adapter);                 intentfilter filter = new intentfilter();                 filter.addaction(myservice.transaction_done);                 registerreceiver(myreceiver, filter);                 new handler().post(new runnable() {                     @override                     public void run() {                         if (myservice.mydatabase == null) return;                         cursor cursor = myservice.mydatabase.rawquery("select * messages", null);                         int messagecolumn = cursor.getcolumnindex("message");                         cursor.movetofirst();                         if (cursor != null && (cursor.getcount() > 0)) {                             {                                 string message = cursor.getstring(messagecolumn);                                 try {                                     jsonobject jsonobject = new jsonobject(message);                                     adapter.add(jsonobject.getstring("title"), jsonobject.getstring("desc"), jsonobject.getstring("tag"));                                 } catch (jsonexception e) {                                     e.printstacktrace();                                 }                             } while (cursor.movetonext());                             adapter.update();                         }                     }                 });              }         });         builder.setnegativebutton("cancel", new dialoginterface.onclicklistener() {             @override             public void onclick(dialoginterface dialog, int which) {                 dialog.cancel();             }         });         builder.show();     }else {         intent intent = new intent(this, myservice.class);         name = this.getsharedpreferences("my_preferences",mode_private).getstring("name","no_name");         ip  = this.getsharedpreferences("my_preferences",mode_private).getstring("ip","no_ip");         intent.putextra("name",name);         intent.putextra("ip",ip);         startservice(intent);         listview listview = (listview) findviewbyid(r.id.listview);         adapter = new customadapter(this);         listview.setadapter(adapter);         intentfilter filter = new intentfilter();         filter.addaction(myservice.transaction_done);         registerreceiver(myreceiver, filter);         new handler().post(new runnable() {             @override             public void run() {                 if (myservice.mydatabase == null) return;                 cursor cursor = myservice.mydatabase.rawquery("select * messages", null);                 int messagecolumn = cursor.getcolumnindex("message");                 cursor.movetofirst();                 if (cursor != null && (cursor.getcount() > 0)) {                     {                         string message = cursor.getstring(messagecolumn);                         try {                             jsonobject jsonobject = new jsonobject(message);                             adapter.add(jsonobject.getstring("title"), jsonobject.getstring("desc"), jsonobject.getstring("tag"));                         } catch (jsonexception e) {                             e.printstacktrace();                         }                     } while (cursor.movetonext());                     adapter.update();                 }             }         });     } }  @override protected void ondestroy() {     if (myreceiver != null) {         unregisterreceiver(myreceiver);         myreceiver = null;     }     super.ondestroy(); }  private broadcastreceiver myreceiver = new broadcastreceiver() {     @override     public void onreceive(context context, intent intent) {         string message = intent.getstringextra("message");         toast.maketext(mainactivity.this,message,toast.length_long).show();         jsonobject jsonobject = null;         try {             jsonobject = new jsonobject(message);             if(jsonobject.has("remove")){                 adapter.remove(jsonobject.getstring("remove"));                 adapter.update();             }else {                 adapter.add(jsonobject.getstring("title"), jsonobject.getstring("desc"), jsonobject.getstring("tag"));                 adapter.update();             }         } catch (jsonexception e) {             e.printstacktrace();         }      }     };      class customadapter extends baseadapter {      private layoutinflater inflater;     private arraylist<listviewdata> objects;      public void add(string title, string desc, string tag) {         objects.add(new listviewdata(title, desc, tag));     }      public void remove(string tag){         for(listviewdata data : objects){             if(data.gettag().equals(tag)){                 objects.remove(data);                 break;             }         }     }      public void update(){         notifydatasetchanged();     }      private class viewholder {         textview title;         textview description;         button resolve;         button subscribe;         button unsubscribe;     }      public customadapter(context context) {         inflater = layoutinflater.from(context);         objects = new arraylist<>();     }      public int getcount() {         return objects.size();     }      public listviewdata getitem(int position) {         return objects.get(position);     }      public long getitemid(int position) {         return position;     }      public view getview(final int position, view convertview, viewgroup parent) {         viewholder holder = null;         if (convertview == null) {             holder = new viewholder();             convertview = inflater.inflate(r.layout.custom_list_layout, null);             holder.title = (textview) convertview.findviewbyid(r.id.title);             holder.description = (textview) convertview.findviewbyid(r.id.desc);             holder.resolve = (button) convertview.findviewbyid(r.id.resolve);             holder.subscribe = (button) convertview.findviewbyid(r.id.subscribe);             holder.unsubscribe = (button) convertview.findviewbyid(r.id.unsubscribe);             convertview.settag(holder);         } else {             holder = (viewholder) convertview.gettag();         }         holder.title.settext(objects.get(position).gettitle());         holder.description.settext(objects.get(position).getdescription());         holder.resolve.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                  final alertdialog.builder builder = new alertdialog.builder(mainactivity.this);                 builder.settitle("title");                 final view viewinflated = getlayoutinflater().inflate(r.layout.custom_dialog2, null);                 builder.setview(viewinflated);                  // set buttons                 builder.setpositivebutton("publish", new dialoginterface.onclicklistener() {                     @override                     public void onclick(dialoginterface dialog, int which) {                          edittext edittext = (edittext) viewinflated.findviewbyid(r.id.name);                         edittext edittext2 = (edittext) viewinflated.findviewbyid(r.id.destination);                         string name = edittext.gettext().tostring().trim();                         string destination = edittext2.gettext().tostring().trim();                         jsonobject jsonobject = new jsonobject();                         try {                             jsonobject.accumulate("name", name);                             jsonobject.accumulate("destination", destination);                             jsonobject.accumulate("resolve",objects.get(position).gettag());                         } catch (jsonexception e) {                             e.printstacktrace();                         }                         intent intent = new intent(mainactivity.this,myservice.class);                         intent.putextra("message",jsonobject.tostring());                         startservice(intent);                     }                 });                 builder.setnegativebutton("cancel", new dialoginterface.onclicklistener() {                     @override                     public void onclick(dialoginterface dialog, int which) {                         dialog.cancel();                     }                 });                  builder.show();             }          });         holder.subscribe.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                  string tag = objects.get(position).gettag();                 try {                     intent intent = new intent(mainactivity.this,myservice.class);                     intent.putextra("message",new jsonobject().accumulate("subscribe",tag).accumulate("name",name).tostring());                     startservice(intent);                 } catch (jsonexception e) {                     e.printstacktrace();                 }              }         });         holder.unsubscribe.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                  string tag = objects.get(position).gettag();                 try {                     intent intent = new intent(mainactivity.this,myservice.class);                     intent.putextra("message",new jsonobject().accumulate("unsubscribe",tag).accumulate("name",name).tostring());                     startservice(intent);                 } catch (jsonexception e) {                     e.printstacktrace();                 }              }         });         return convertview;     } }  }  class mypreferences {  private static final string my_preferences = "my_preferences";  public static boolean isfirst(context context){     final sharedpreferences reader = context.getsharedpreferences(my_preferences, context.mode_private);     final boolean first = reader.getboolean("is_first", true);     if(first){         final sharedpreferences.editor editor = reader.edit();         editor.putboolean("is_first", false);         editor.commit();     }     return first; }  }