spinner.txt

//set adapter

ArrayAdapter adapterMonth = ArrayAdapter.createFromResource(this, R.array.categoriesMonth, android.R.layout.simple_spinner_item);
        spSelectMonthViewRent.setAdapter(adapterMonth);

//items


<string-array name="categoriesMonth">
        <item>Jan</item>
        <item>Feb</item>
        <item>Mar</item>
        <item>Apr</item>
        <item>May</item>
        <item>Jun</item>
        <item>Jul</item>
        <item>Aug</item>
        <item>Sep</item>
        <item>Oct</item>
        <item>Nov</item>
        <item>Dec</item>
    </string-array>



//Populate Spinner from Database

 private void setSpinnerCategory() {

        ArrayList<String> list = new ArrayList<>();
        Cursor cursor = databaseHelper.getCategoryT2();
        if (cursor.getCount()>0)
        {
            while (cursor.moveToNext())
            {
                String items=cursor.getString(1);
                list.add(items);
            }
        }

        if (list.size()==0)
        {
            list.add("No Category Plz Create One");
        }
        
        ArrayAdapter<String> spinnerCategoryAdapter = new ArrayAdapter<>(AddActivity.this,android.R.layout.simple_spinner_item,list);
        spinnerCategory.setAdapter(spinnerCategoryAdapter);
    }