The android app works only in emulator -

the app working in emulator.i use android studio.but when export , install in mobile phone app doesn't working , closing.i clear code main activity , install again , opens. when start emulation android studio see logcat follows:

   07-07 18:47:13.626    1886-1886/com.example.iratus.kvexplorer i/art﹕   not late-enabling -xcheck:jni (already on)    07-07 18:47:14.136    1886-1906/com.example.iratus.kvexplorer i/art﹕ background sticky concurrent mark sweep gc freed 2826(222kb) allocspace objects, 0(0b) los objects, 0% free, 17mb/17mb, paused 30.235ms total 65.361ms    07-07 18:47:14.194    1886-1917/com.example.iratus.kvexplorer d/openglrenderer﹕ render dirty regions requested: true    07-07 18:47:14.195    1886-1886/com.example.iratus.kvexplorer d/﹕ hostconnection::get() new host connection established 0xa69bf1b0, tid 1886    07-07 18:47:14.238    1886-1886/com.example.iratus.kvexplorer d/atlas﹕ validating map...    07-07 18:47:14.304    1886-1917/com.example.iratus.kvexplorer d/﹕ hostconnection::get() new host connection established 0xa69a8bb0, tid 1917    07-07 18:47:14.406    1886-1917/com.example.iratus.kvexplorer i/openglrenderer﹕ initialized egl, version 1.4    07-07 18:47:14.477    1886-1917/com.example.iratus.kvexplorer d/openglrenderer﹕ enabling debug mode 0    07-07 18:47:14.520    1886-1917/com.example.iratus.kvexplorer w/egl_emulation﹕ eglsurfaceattrib not implemented    07-07 18:47:14.521    1886-1917/com.example.iratus.kvexplorer w/openglrenderer﹕ failed set egl_swap_behavior on surface 0xa69a9e60, error=egl_success    07-07 18:47:18.275    1886-1886/com.example.iratus.kvexplorer d/database operations﹕ database created    07-07 18:47:18.278    1886-1886/com.example.iratus.kvexplorer w/fileutils﹕ failed chmod(/data/data/com.example.iratus.kvexplorer/databases/kv_db): android.system.errnoexception: chmod failed: eperm (operation not permitted)    07-07 18:47:18.290    1886-1886/com.example.iratus.kvexplorer i/choreographer﹕ skipped 155 frames!  application may doing work on main thread.    07-07 18:47:18.360    1886-1886/com.example.iratus.kvexplorer d/database operations﹕ database created    07-07 18:47:18.361    1886-1886/com.example.iratus.kvexplorer w/fileutils﹕ failed chmod(/data/data/com.example.iratus.kvexplorer/databases/kv_db): android.system.errnoexception: chmod failed: eperm (operation not permitted)    07-07 18:47:18.426    1886-1917/com.example.iratus.kvexplorer w/egl_emulation﹕ eglsurfaceattrib not implemented    07-07 18:47:18.426    1886-1917/com.example.iratus.kvexplorer w/openglrenderer﹕ failed set egl_swap_behavior on surface 0xa69a9e60, error=egl_success    07-07 18:47:19.407    1886-1886/com.example.iratus.kvexplorer i/choreographer﹕ skipped 58 frames!  application may doing work on main thread. 

my main activity code is:

public class mainactivity extends actionbaractivity {      context ctx = this;     textview tv1;     button buttong;     public string fid;     //sqlitedatabase db;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         final arraylist<string> centerstring = new arraylist<>(arrays.aslist("ΒΑΣΙΛΙΚΩΝ", "ΓΑΛΑΡΙΝΟΥ", "ΛΙΒΑΔΙ", "ΜΟΝΟΠΗΓΑΔΟΥ", "ΠΕΡΙΣΤΕΡΑΣ", "ΣΟΥΡΩΤΗΣ", "ΒΥΖΑΝΤΙΟ", "ΘΕΡΜΗΣ", "ΚΑΛΑΜΑΡΙΑΣ", "ΦΟΙΝΙΚΑΣ", "ΑΓ.ΤΡΙΑΔΑΣ", "ΑΓΓΕΛΟΧΩΡΙΟΥ", "ΕΠΑΝΩΜΗΣ", "ΜΕΣΗΜΕΡΙΟΥ", "ΜΗΧΑΝΙΩΝΑΣ", "ΠΕΡΑΙΑΣ", "ΡΥΣΙΟΥ", "ΤΑΓΑΡΑΔΕΣ", "ΤΟΥΜΠΑ ΕΠΑΝΩΜΗΣ", "ΤΡΙΛΟΦΟΥ", "ΕΞΟΧΗ", "ΠΑΝΟΡΑΜΑ", "ΤΟΥΜΠΑΣ", "ΧΑΡΙΛΑΟΥ", "ΧΟΡΤΙΑΤΗΣ", "ΡΟΣΤΑΝ", "ΑΜΠΕΛΟΚΗΠΟΙ ΘΣΝ", "ΕΛΕΥΘΕΡΙΑ", "ΕΥΚΑΡΠΙΑΣ", "ΠΑΥΛΟΥ ΜΕΛΑ", "ΩΡΑΙΟΚΑΣΤΡΟΥ", "ΑΣΠΡΟΒΑΛΤΑΣ", "ΜΑΔΥΤΟΥ", "ΡΕΝΤΙΝΑΣ-ΜΟΔΙ", "ΣΤΑΥΡΟΥ", "ΑΓ ΑΘΑΝΑΣΙΟΣ", "ΑΓΧΙΑΛΟΣ", "ΑΝΑΤΟΛΙΚΟ", "ΒΑΘΥΛΑΚΟΣ", "ΓΕΦΥΡΑ", "ΔΙΑΒΑΤΩΝ", "ΜΕΣΑΙΟ", "Ν.ΜΕΣΗΜΒΡΙΑ", "ΝΕΟΧΩΡΟΥΔΑ", "ΠΡΟΧΩΜΑ", "ΣΙΝΔΟΣ", "ΧΑΛΑΣΤΡΑ", "ΑΠ.ΠΑΥΛΟΥ", "ΕΡΜΟΥ", "ΑΓ.ΒΑΣΙΛΕΙΟΥ", "ΑΝΑΛΗΨΗΣ", "ΑΣΣΗΡΟΥ", "ΒΕΡΤΙΣΚΟΥ", "ΔΟΡΚΑΔΑΣ", "ΔΡΥΜΟΥ", "ΚΑΒΑΛΑΡΙ", "ΚΟΛΧΙΚΟΥ", "ΚΡΙΘΙΑΣ", "ΛΑΓΚΑΔΑ", "ΛΕΥΚΟΧΩΡΙ", "ΛΗΤΗΣ", "ΞΥΛΟΥΠΟΛΗΣ", "ΟΣΣΑΣ", "ΠΕΝΤΕ ΒΡΥΣΕΣ", "ΒΑΣΙΛΟΥΔΙ", "ΖΑΓΚΛΙΒΕΡΙ", "ΚΑΛΑΜΩΤΟΥ", "ΚΟΚΚΑΛΟΥ", "ΛΑΓΚΑΔΙΚΙΩΝ", "Ν.ΑΠΟΛΛΩΝΙΑΣ", "ΠΕΤΡΟΚΕΡΑΣΑ", "ΠΡΟΦΗΤΗ", "ΒΑΡΝΑΣ", "ΚΑΛΟΧΩΡΙ", "ΠΛΑΤ.ΔΗΜΟΚΡΑΤ.", "ΡΕΤΖΙΚΗ-ΠΕΥΚΩΝ", "ΦΙΛΥΡΟΥ", "ΑΡΕΘΟΥΣΑΣ", "ΑΡΕΤΗ", "ΑΣΚΟΥ", "ΚΡΥΟΝΕΡΙΟΥ", "ΛΟΦΙΣΚΟΣ", "ΜΑΥΡΟΥΔΑΣ", "ΣΟΧΟΥ", "ΦΙΛΑΔΕΛΦΕΙΟΥ", "ΑΔΕΝΔΡΟ", "ΑΘΥΡΑ", "ΚΟΥΦΑΛΙΑ", "ΚΥΜΙΝΑ", "ΜΙΜΡΟ ΜΟΝΑΣΤΗΡΙ", "ΧΑΛΚΗΔΟΝΑΣ"));          final map<string, integer> center_kv = new hashmap<>();         (int = 0; < centerstring.size(); i++) {             center_kv.put(centerstring.get(i), + 1);         }         collections.sort(centerstring);         final spinner sp = (spinner) findviewbyid(r.id.spinner);          arrayadapter<string> spinneradapter = new arrayadapter<>                 (this, android.r.layout.simple_spinner_item, centerstring);         spinneradapter.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);         sp.setadapter(spinneradapter);          final spinner sp2 = (spinner) findviewbyid(r.id.spinner2);          final    arraylist<string> selectedkv= new arraylist<>();         final arrayadapter<string> spinneradapter2 = new arrayadapter<>                 (this, android.r.layout.simple_spinner_item, selectedkv);          sp.setonitemselectedlistener(                 new adapterview.onitemselectedlistener() {                     @override                     public void onitemselected(adapterview<?> parent, view view, int position, long id) {                         selectedkv.clear();                           databaseoperations dop = new databaseoperations(ctx);                          cursor cr = dop.getinformation(dop);                          string name_k = sp.getselecteditem().tostring();                          string ids = center_kv.get(name_k).tostring();                        //  arraylist<string> selectedkv = new arraylist<>();                         cr.movetofirst();                         string magic = "";                         {                             if (ids.equals(cr.getstring(1))){                                 magic = cr.getstring(0);                                 selectedkv.add(magic);}                             //log.d("addddddddddddddd", magic.tostring());                         }                         while (cr.movetonext());                          spinneradapter2.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);                         sp2.setadapter(spinneradapter2);                         fid = ids;                     }                      @override                     public void onnothingselected(adapterview<?> parent) {                         selectedkv.clear();                         databaseoperations dop = new databaseoperations(ctx);                         cursor cr = dop.getinformation(dop);                         string name_k = sp.getselecteditem().tostring();                         string ids = center_kv.get(name_k).tostring();                          cr.movetofirst();                         string magic = "";                         {                             if (ids.equals(cr.getstring(1))){                                 magic = cr.getstring(0);                                 selectedkv.add(magic);}                          }                         while (cr.movetonext());                          spinneradapter2.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);                         sp2.setadapter(spinneradapter2);                     }                 }         );         tv1 = (textview) findviewbyid(r.id.textview);         buttong = (button) findviewbyid(r.id.buttongps);          view.onclicklistener oclbtnok = new view.onclicklistener() {             @override             public void onclick(view v) {                  databaseoperations dop = new databaseoperations(ctx);                 cursor cr = dop.getinformation(dop);                 string selected_kv = sp2.getselecteditem().tostring();                 string id =fid;                  cr.movetofirst();                 string finalcoordinates = "";                 {                     if (id.equals(cr.getstring(1))){                          if (selected_kv.equals(cr.getstring(0))){                             finalcoordinates = cr.getstring(2);}                         }                 }                 while (cr.movetonext());                 intent intent = new intent(android.content.intent.action_view,                         uri.parse("geo:0,0?q="+finalcoordinates));                 startactivity(intent);             }         };         buttong.setonclicklistener(oclbtnok);          button buttoninfo = (button) findviewbyid(r.id.buttoninfo);         view.onclicklistener infolisten = new view.onclicklistener() {             @override             public void onclick(view v) {                  file file = new file((environment.getexternalstoragedirectory().getabsolutepath()+"res/kvinformation/Αγγελοχώρι.pdf"));                 if(file.exists()) {                 intent target = new intent(intent.action_view);                 target.setdataandtype(uri.fromfile(file),"application/pdf");                 target.setflags(intent.flag_activity_no_history);                  intent intent = intent.createchooser(target, "open pdf file");                 try {                     startactivity(intent);                 } catch (activitynotfoundexception e) {                     // instruct user install pdf reader here, or                 }                 }                 else                     toast.maketext(getapplicationcontext(), "file path incorrect." , toast.length_long).show();              }         };         buttoninfo.setonclicklistener(infolisten);       } } 

can me?

i add here logcat when use usb debugging phone , crashes

      07-07 23:02:50.560  32685-32685/com.example.iratus.kvexplorer d/openglrenderer﹕ enabling debug mode 0       07-07 23:02:50.590  32685-32685/com.example.iratus.kvexplorer d/database operations﹕ database created       07-07 23:02:50.600  32685-32685/com.example.iratus.kvexplorer d/androidruntime﹕ shutting down vm       07-07 23:02:50.600  32685-32685/com.example.iratus.kvexplorer w/dalvikvm﹕ threadid=1: thread exiting uncaught exception (group=0x4101aac8)       07-07 23:02:50.600  32685-32685/com.example.iratus.kvexplorer e/androidruntime﹕ fatal exception: main android.database.cursorindexoutofboundsexception: index 0 requested, size of 0         @ android.database.abstractcursor.checkposition(abstractcursor.java:424)         @ android.database.abstractwindowedcursor.checkposition(abstractwindowedcursor.java:136)         @ android.database.abstractwindowedcursor.getstring(abstractwindowedcursor.java:50)         @ com.example.iratus.kvexplorer.mainactivity$1.onitemselected(mainactivity.java:72)         @ android.widget.adapterview.fireonselected(adapterview.java:899)         @ android.widget.adapterview.access$200(adapterview.java:50)         @ android.widget.adapterview$selectionnotifier.run(adapterview.java:863)         @ android.os.handler.handlecallback(handler.java:725)         @ android.os.handler.dispatchmessage(handler.java:92)         @ android.os.looper.loop(looper.java:176)         @ android.app.activitythread.main(activitythread.java:5299)         @ java.lang.reflect.method.invokenative(native method)         @ java.lang.reflect.method.invoke(method.java:511)         @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1102)         @ com.android.internal.os.zygoteinit.main(zygoteinit.java:869)         @ dalvik.system.nativestart.main(native method)          07-07 23:02:50.620  32685-32685/com.example.iratus.kvexplorer i/process﹕ sending signal. pid: 32685 sig: 9 

where have put database file?

this appears permissions issue fileutils - on database table - check if app has rights storage folder or if has ownership. per logcat, see line: 07-07 18:47:18.361 1886-1886/com.example.iratus.kvexplorer w/fileutils﹕ failed chmod(/data/data/com.example.iratus.kvexplorer/databases/kv_db): android.system.errnoexception: chmod failed: eperm (operation not permitted)