Your spinner is set to null. You need to get it from your resources
Spinner spinner = (Spinner) findViewById(R.id.'spinner_id_name');
Then you can set your adapter :)
Frage
I am getting a null pointer exception when i am running this peice of code
private void loadSpinnerData() {
// database handler
AttendAppDatasource db = new AttendAppDatasource(getApplicationContext());
// Spinner Drop down elements
List<String> clas = db.viewCol(AttendAppDbOpenHelper.COLUMN_CLASS);
Log.i("Select Class","List Assigned");
// Creating adapter for spinner
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, clas);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(dataAdapter);
}
this is the relevant log output
this is the log out put corresponding to the list
Lösung
Your spinner is set to null. You need to get it from your resources
Spinner spinner = (Spinner) findViewById(R.id.'spinner_id_name');
Then you can set your adapter :)