ست کردن spier

Spier spier1, spier2;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spier1 = (Spier) findViewById(R.id.spier1);
spier2 = (Spier) findViewById(R.id.spier2);
ArrayAdapter adapter1 = ArrayAdapter.createFromResource(this,
R.array.array1, android.R.layout.simple_spier_item);
spier1.setAdapter(adapter1);
spier1.setOnItemSelectedListener(this);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
retu true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
retu true;
}
retu super.onOptionsItemSelected(item);
}

@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
if (spier1.getSelectedItem().equals("mobile")) {
Toast.makeText(getApplicationContext(), "Mobil dipilih",
Toast.LENGTH_SHORT).show();

ArrayAdapter adapter2 = ArrayAdapter.createFromResource(this,
R.array.mobile_array, android.R.layout.simple_spier_item);
spier2.setAdapter(adapter2);
} else {
ArrayAdapter adapter2 = ArrayAdapter.createFromResource(this,
R.array.motor_array, android.R.layout.simple_spier_item);
spier2.setAdapter(adapter2);
}

}

@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}

}