I am trying to create a simple spinner but its showing an error. I have created an activity in my project.
My MainActivity class :
public class MainActivity extends AppCompatActivity {
Spinner sp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<String> list = new ArrayList<String>();
list.add("K");
list.add("J");
list.add("S");
list.add("B");
list.add("G");
list.add("F");
list.add("G");
list.add("D");
list.add("C");
list.add("M");
sp=(Spinner) findViewById(R.id.spinner);
ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, R.layout.activity_main,list);
adapter.setDropDownViewResource(R.layout.activity_main);
sp.setAdapter(adapter);
sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String label = parent.getItemAtPosition(position).toString();
Toast.makeText(parent.getContext(),"You are selected "+label,Toast.LENGTH_LONG).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
}
here is my activity_main.xml where i added a spinner:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.firebase.ashik.dropdownlistviewvaluecount.MainActivity">
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/textView"
android:layout_centerHorizontal="true"
android:layout_marginTop="81dp"
android:id="@+id/spinner" />
</RelativeLayout>
and showing this fatal error :
E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
