Android GUI issues in the tablet with changedButton.getBackground().setColorFilter(color, mode); -

how in title, app work in smartphones (samsung s2 , samsung s3), have gui bug in tablet (samsung galaxy tab s android 5.0.2).

this activity can changed user. can touch 1 button , change text , color this

but in tablet if user switch orientation or close , open activity, appear problem!

all buttons take color of first inputed color! , if user swap orientation or close , re-open activity returns normal state!

here code change buttons user has changed in past!

static string clickedbuttonviewid; private list<materievoti> materie; mysqlitehelper db = new mysqlitehelper(this);  @override protected void oncreate(bundle savedinstancestate) {      super.oncreate(savedinstancestate);      setcontentview(r.layout.activity_set_table);  //get materie inside database      list<materia> materia = db.getallmaterie();      //change textview inputed user      if(materia.isempty()){          //do nothing      }else {          (materia mat : materia) {              //change button values stored inside database              int resid = getresources().getidentifier(mat.getid(), "id", getpackagename());              button changedbutton = (button) findviewbyid(resid);              changedbutton.settext(mat.getmateria());              changedbutton.settypeface(null, typeface.bold);              changedbutton.getbackground().setcolorfilter(mat.getcolor(), porterduff.mode.multiply);           }      }  }  //take data activityaddmateria     protected void onactivityresult(int requestcode, int resultcode, intent data) {         if(requestcode == 1) {             if (resultcode == result_ok) {                  mysqlitehelper db = new mysqlitehelper(this);                 string result = data.getstringextra("result"); //take materia dialog                 int color = data.getintextra("color", 1); //take color dialog                  //controllo se il button è già presente nel db se presente aggiorno se non presente inserisco                 boolean modifica = db.exists(clickedbuttonviewid);                  if(!modifica) {                      //materia da inserire in un nuovo spazio                     db.addmateriatodb(new materia(clickedbuttonviewid, result, color));                  }else{                      //materia già presente nel button quindi aggiorno la materia                     db.updatemateria(new materia(clickedbuttonviewid, result, color));                     toast.maketext(getapplicationcontext(), "materia modificata!",                             toast.length_long).show();                 }                  //cambio subito il button                 int resid = getresources().getidentifier(clickedbuttonviewid, "id", getpackagename());                 final button clickedtextview = (button) findviewbyid(resid);                  clickedtextview.settext(result);                 clickedtextview.getbackground().setcolorfilter(color, porterduff.mode.multiply);             }              if (resultcode == result_canceled) {                 //nessuna materia inserita             }          }     }//onactivityresult 

drawable/buttons.xml

<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android">      <item android:drawable="@drawable/button_pressed"         android:state_pressed="true" />      <item android:drawable="@drawable/button_focused"         android:state_focused="true" />      <item android:drawable="@drawable/button_default" />  </selector> 

drawable/button_default.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >     <corners         android:radius="100dp"         />     <solid         android:color="#ffffff"         />     <padding         android:left="0dp"         android:top="0dp"         android:right="0dp"         android:bottom="0dp"         />     <stroke         android:width="3dp"         android:color="#787878"         /> </shape> 

i found problem don't know why doesn't work. if change changedbutton.getbackground().setcolorfilter(mat.getcolor(), porterduff.mode.multiply); changedbutton.setbackgroundcolor(mat.getcolor()); problem disappear lose button style property!

one way create drawable/button_style_red.xml, drawable/button_style_yellow.xml , code button.setdrawable(button_style_color); can change button. but there way change color not style of buttons??

the button.getbackground().setcolorfilter(mat.getcolor(), porterduff.mode.multiply); doesn't work device!!

this old question make changed button same style link