Android--下拉列表框(Spinner)

下拉列表框(Spinner)

package com.jiangge.spiderdeom;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class MainActivity extends Activity {
	Spinner spinner;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		spinner = (Spinner) findViewById(R.id.spinner_show);
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item);
		adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		adapter.add("Android");
		adapter.add("Ios");
		adapter.add("WindowPhone");
		spinner.setAdapter(adapter);
		
	}

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <Spinner
        android:id="@+id/spinner_show"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
		
</RelativeLayout>