android Spinner(下拉菜单)的应用举例1---静态实现

AppMain.java

package lxy.litsoft;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;

public class AppMain extends Activity {
	Spinner s;
	ArrayAdapter<CharSequence> adapter;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        adapter = ArrayAdapter.createFromResource(this, R.array.place, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        
        s = (Spinner)findViewById(R.id.spinner);
        s.setAdapter(adapter);
        s.setOnItemSelectedListener(new SpinnerListener());
        s.setPrompt("地点");
    }
    
    class SpinnerListener implements OnItemSelectedListener{
		public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
				long arg3) {
			String selected = arg0.getItemAtPosition(arg2).toString();
			Toast.makeText(AppMain.this, "what you selected is :"+selected, Toast.LENGTH_LONG).show();
			Log.d("test", "what you selected is :"+selected);
		}

		public void onNothingSelected(AdapterView<?> arg0) {
			Toast.makeText(AppMain.this, "you have selected nothing", Toast.LENGTH_LONG).show();
			Log.d("test", "you have selected nothing");
		}
    	
    }
}

main.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"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    
<Spinner
    android:id="@+id/spinner"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"></Spinner>
     
</LinearLayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, AppMain!</string>
    <string name="app_name">Spinner</string>
    <string-array name="place">
    	<item>北京</item>
    	<item>河北</item>
    	<item>石家庄</item>
    	<item>邢台</item>
    	<item>广宗</item>
    	<item>小庄</item>
    </string-array>
</resources>