spinner states and cities array list
<string-array name="State_array">
<item >s1</item>
<item >s2</item>
<item >s3</item>
<item >s4</item>
</string-array>
//then cities array for each states, like
<string-array name="State1Cities_array">
<item >c11</item>
<item >c12</item>
<item >c15</item>
<item >c13</item>
</string-array>
<string-array name="State2Cities_array">
<item >c1</item>
<item >c2</item>
<item >c5</item>
<item >c3</item>
</string-array>
// and so on for all the states