android - Spinner won't show item selected through data in firebase -


when fetch data firebase can show list through spinner when item selected doesn't show anything, list, works if hardcode list string values. , onitemselectedlistener doesn't work, can please me?

here's how fetch data.

    private arraylist <string> fetchdata (string league){         final arraylist<string> teamname = new arraylist<>();         /* return arraylist of type string of teams in league*/         databasereference databasereference = firebasedatabase.getinstance()                 .getreference()                 .child("standings").child(league);         query query = databasereference.orderbychild("name");         query.addlistenerforsinglevalueevent(new valueeventlistener() {             @override             public void ondatachange(datasnapshot datasnapshot) {                 for(datasnapshot mdatasnapshot: datasnapshot.getchildren()){                     string name = (string) mdatasnapshot.child("name").getvalue();                     teamname.add(name);                 }             }             @override             public void oncancelled(databaseerror databaseerror) {              }         });          return teamname;     }

here oncreate method setup adapter:

    arraylist<string> teamsofleague = fetchdata(league);         arrayadapter<string> madapter = new arrayadapter<>(                 this,r.layout.spinner_layout,                 r.id.text1,                 teamsofleague);           mlocalteam.setonitemselectedlistener(new spinner.onitemselectedlistener(){             public void onitemselected(adapterview<?> parent, view view, int pos,                                        long id) {                 log.e(tag, "im being selected");             }             public void onnothingselected(adapterview<?> parent) {             }         });          mlocalteam.setadapter(madapter);

here main layout activity:

    <linearlayout             android:layout_width="match_parent"             android:orientation="vertical"             android:layout_height="wrap_content">             <spinner                 android:id="@+id/spinner"                 android:backgroundtint="@color/coloraccent"                 android:layout_width="match_parent"                 android:layout_height="match_parent"/>         </linearlayout>

here spinner.xml:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"               android:orientation="vertical"               android:layout_width="match_parent"               android:layout_height="match_parent">      <textview xmlns:android="http://schemas.android.com/apk/res/android"               android:id="@+id/text1"               android:background="@color/colorprimarydark"               android:layout_width="match_parent"               android:textcolor="@color/white"               android:layout_height="wrap_content"               android:textappearance="?android:attr/textappearancelistitemsmall"               android:gravity="center_vertical"               android:spinnermode="dropdown"               android:paddingstart="?android:attr/listpreferreditempaddingstart"               android:paddingend="?android:attr/listpreferreditempaddingend"               android:minheight="?android:attr/listpreferreditemheightsmall"               android:paddingleft="?android:attr/listpreferreditempaddingleft"               android:paddingright="?android:attr/listpreferreditempaddingright" /> </linearlayout>

and here how activity when run app: screenshot


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