Android Spinner控制項的使用

1、UI檔案：spinner.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/textView1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="TextView" />    <Spinner        android:id="@+id/spinner1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:drawSelectorOnTop="true"        android:prompt="@string/city_message"        /></LinearLayout>

 

2、SpinnerAcitivity.java檔案

public class SpinnerActivity  extends Activity{private Spinner spinner;  private static final String[] CITY = {    "Spinner Item1", "Spinner Item2", "Spinner Item3", "Spinner Item4" }; @Override    protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.spinner);spinner = (Spinner) findViewById(R.id.spinner1);ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,CITY);spinner.setAdapter(adapter);spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener(){public void onItemSelected(AdapterView<?> arg0, View arg1,int arg2, long arg3) {Toast.makeText(SpinnerActivity.this, CITY[arg2], Toast.LENGTH_SHORT).show();}public void onNothingSelected(AdapterView<?> arg0){}});    }}

 3. 。 使用模擬器。