Android基本组件06（Spinner）

 

//ActivitySpinner.javapackage android.ActivityUI;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.Spinner;public class ActivitySpinner extends Activity{Spinner spinner1;private ArrayAdapter<String> nCountries;private List<String> allCountries;public void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.spinner);setTitle("Spinner");spinner_select();}private static final String[] mCountries = {"China","Russia","German","USA"};private void spinner_select(){spinner1 = (Spinner)findViewById(R.id.spinner1);allCountries = new ArrayList<String>();for(int i=0;i < mCountries.length;i++){allCountries.add(mCountries[i]);}nCountries = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,allCountries);nCountries.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);spinner1.setAdapter(nCountries);}}//spinner.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation="vertical"  android:layout_width="fill_parent"  android:layout_height="fill_parent"><Spinner android:layout_height="wrap_content" android:layout_width="fill_parent" android:id="@+id/spinner1"></Spinner></LinearLayout>