Android--下拉列表框(Spinner)

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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;@Overrideprotected 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>