Android Drop Drown

	<string name="kan_gurubu">Kan grubu seçiniz</string>
    <string-array name="kan_grubu_dizi">
        <item>AB+</item>
        <item>A+</item>
        <item>B+</item>
        <item>0+</item>
        <item>0-</item>
        <item>B-</item>
        <item>A-</item>
        <item>AB-</item>
    </string-array>

   <Spinner
        android:id="@+id/edtKanGrubu"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:hint="@string/bilgilerim_kan_grubu"
        android:entries="@array/kan_grubu_dizi"
        android:prompt="@string/kan_gurubu" />

		private Spinner edtKanGrubu;

		edtKanGrubu = (Spinner)findViewById(R.id.edtKanGrubu);
		switch(PreferencesDao.getValue(BLOOD_TYPE)){
		case "AB" :blood_type = 0; break;
		case "A+" :blood_type = 1; break;
		case "B+" :blood_type = 2; break;
		case "0+" :blood_type = 3; break;
		case "0-" :blood_type = 4; break;
		case "B-" :blood_type = 5; break;
		case "A-" :blood_type = 6; break;
		case "AB-":blood_type = 7; break;
		}

		edtKanGrubu.setSelection(blood_type);

		String kanGrubu = edtKanGrubu.getSelectedItem().toString();