
Spinner lets you select an item from the drop down menu.
Spinner Syntax Application examples in class java:
// Spinner element
Spinner spinner = (Spinner) findViewById(R.id.spinner);
// Spinner click listener
spinner.setOnItemSelectedListener(this);
Spinner Syntax Sample Application on the layout (xml):
<Spinner
android:id="@+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:prompt="@string/spinner_title"
/>
1- Create an ArrayList Item
2- Create item ArrayAdapter & Bind
Source: Master Android (App)