java - スピナーが正常に動作しない

Question

私が抱えている問題は、spinner2(たとえば) カナダを選択した後に入力したいのですが、何らかの理由で、spinner2カナダを選択した後ではなく、起動時に入力されることです。また、文字列配列を接続してspinner2、何も起動しないことを確認しましたが、それでも機能しません。これが私がこれまでに持っているものです：

public class MainActivity extends Activity {

    private Spinner spinner1, spinner2;
    private Button button;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);     
        setContentView(R.layout.activity_main);     

        addListenerOnButton();
        addListenerOnSpinnerItemSelection();
        spinner1 = (Spinner) findViewById(R.id.spinner1);

        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, 
        R.array.countries, 
        android.R.layout.simple_list_item_1);

        spinner1.setAdapter(adapter);

        spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
            public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {
                TextView tv = (TextView)v;   // cast the View to a TextView
                if ("Canada".equals(tv.getText().toString()));
                {
                    addItemsOnSpinner2();
                }
            }

            public void onNothingSelected(AdapterView<?> arg0) {

            }
        });
    }     


    // add items into spinner dynamically

    public void addItemsOnSpinner2() {     

        spinner2 = (Spinner) findViewById(R.id.spinner2);
        List list = new ArrayList();
        list.add("hello");
        list.add("holla");
        list.add("hey");
        list.add("hi");
        ArrayAdapter dataAdapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item, list);
        dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner2.setAdapter(dataAdapter);
    }     



    public void addListenerOnSpinnerItemSelection() {     
        spinner1 = (Spinner) findViewById(R.id.spinner1);     
        spinner2 = (Spinner) findViewById(R.id.spinner2);     
        spinner1.setOnItemSelectedListener(new Spinner2());     
        spinner2.setOnItemSelectedListener(new Spinner2());     


    }     

    public void addListenerOnButton() {     

        button = (Button) findViewById(R.id.button1);

        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                Toast.makeText(MainActivity.this,
                    "Result : " + 
                    "\nSpinner 1 : "+ String.valueOf(spinner1.getSelectedItem()) +
                    "\nSpinner 2 : "+ String.valueOf(spinner2.getSelectedItem()), Toast.LENGTH_SHORT).show();
            }

        });
    }     
}     

Spinner2.java*

public class Spinner2 implements OnItemSelectedListener {     

    @Override
    public void onItemSelected(AdapterView parent, View view, int pos, long id) {
        Toast.makeText(parent.getContext(), 
            parent.getItemAtPosition(pos).toString(), 
            Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView parent) {

    }
}