spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
{
    String selectedItem = parent.getItemAtPosition(position).toString(); //this is your selected item
    switch(selectedItem){
    //set your edittext inputtype eg. edittext.setInputType(InputType.TYPE_CLASS_TEXT);
    }
}
public void onNothingSelected(AdapterView<?> parent)
{

}           });