Android中的下拉列表-自定義選項界面樣式

Spinner.getItemAtPosition(Spinner.getSelectedItemPosition());獲取下拉列表框的值 
調用setOnItemSelectedListener()方法，處理下拉列表框被選擇事件，把AdapterView.OnItemSelectedListener實例做爲參數傳入

 

主界面設計：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

  xmlns:android="http://schemas.android.com/apk/res/android"

  android:layout_width="fill_parent"

  android:layout_height="wrap_content">

  <Spinner android:id="@+id/spinner"

    android:layout_height="wrap_content"

    android:layout_width="fill_parent"/>

</LinearLayout>

下拉列表框每一項的界面樣式:stylespinner.xml

<?xml version="1.0" encoding="utf-8"?>

<TextView xmlns:android="http://schemas.android.com/apk/res/android"

   android:id="@+id/contentTextView"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:background="#F4FDFF"

    />

代碼處理:

public class SpinnerActivity extends Activity {

    private static final String TAG = "SpinnerActivity";

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.spinner);

         //第二個參數爲layout文件在R文件的id,第三個參數爲TextView在layout文件的id

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.stylespinner, R.id.contentTextView);

        adapter.add("Android");

        adapter.add("Symbian");

        adapter.add("Iphone");

        Spinner spinner = (Spinner) findViewById(R.id.spinner);

        spinner.setAdapter(adapter);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

  @Override

  public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {

  Spinner spinner = (Spinner)adapterView;

  String itemContent = (String)adapterView.getItemAtPosition(position);

  }

  @Override

  public void onNothingSelected(AdapterView<?> view) {

  Log.i(TAG,  view.getClass().getName());

  }

        });

    }

}