Android控件之-Spinner

Android中的下拉菜单，用起来也挺舒服的。

package com.mnkjxy;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class MyActivity extends Activity {
    /** Called when the activity is first created. */
	private static final String[] players = {"科比", "姚明", "枷锁", "德隆", "其他"};
	private TextView textView = null;
	private Spinner spinner = null;
	private ArrayAdapter<String> adapter;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        textView = (TextView) findViewById(R.id.view);
        spinner = (Spinner) findViewById(R.id.spinner);
        //将可选内容放入到ArrayAdapter中
        adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, players);
        //设置下拉风格
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_item);
        //将adapter放在spinner中
        spinner.setAdapter(adapter);
        spinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
			public void onItemSelected(AdapterView<?> arg0, View arg1,
					int arg2, long arg3) {
				textView.setText("你喜欢的NBA明星：" + players[arg2]);
				//设置显示当前选择的项
				arg0.setVisibility(View.VISIBLE);
			}
			public void onNothingSelected(AdapterView<?> arg0) {
				// TODO Auto-generated method stub
			}
        });
    }
}

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:id="@+id/view"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    />
 <Spinner
 	android:id="@+id/spinner"
 	android:layout_width="wrap_content"
 	android:layout_height="wrap_content"
 	/>
</LinearLayout>