介绍 & lt; ? xml version=?.0“,编码=皍tf-8" ?比;
& lt; LinearLayout xmlns: android=癶ttp://schemas.android.com/apk/res/android"
android:才能layout_width=癿atch_parent"
android:才能layout_height=癿atch_parent"
android:才能取向=皏ertical",在
& lt; TextView才能
,,,android: id=癅 + id/textView"
,,,android: layout_width=癿atch_parent"
,,,android: layout_height=皐rap_content"
,,,android: textSize=?5 sp"
,,,android:输入textColor=? ff0000"
,,,/比;
,& lt;转轮
,,,android: id=癅 + id/spinner"
,,,android: layout_width=癿atch_parent"
,,,android: layout_height=皐rap_content",/比;
& lt;/LinearLayout> package com.example.hello;
import java.util.ArrayList;
import 并不知道;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity implements OnItemSelectedListener {
private 才能;TextView textView;
private 才能;Spinner 转子;
private 才能;List< String>,列表;
private 才能;ArrayAdapter< String>,适配器;
@Override才能
protected 才能;void onCreate (Bundle savedInstanceState), {
,,,super.onCreate (savedInstanceState);
,,,setContentView (R.layout.activity_main);
,,,textView =, (TextView), findViewById (R.id.textView);
,,,textView.setText(“您选择的城市是:“);
,,,spinner =,(旋转),findViewById (R.id.spinner);
,,,list =, new ArrayList ();
,,,list.add(“北京“);
,,,list.add(“上海“);
,,,list.add(“广州“);
,,,list.add(“深圳“);
,,,adapter =, new ArrayAdapter (android.R.layout.simple_spinner_item,这个列表);
,,,adapter.setDropDownViewResource (android.R.layout.simple_dropdown_item_1line);
,,,spinner.setAdapter(适配器);
,,,spinner.setOnItemSelectedListener(这个);
,,}
@Override才能
public 才能;void onItemSelected (AdapterView<?祝辞,arg0,, View __arg1、, int 最长,long 长度),{
,,,String cityName =, adapter.getItem(最长);
,,,//String city =, list.get(最长);
,,,textView.setText(“您选择的城市是:“+ cityName);
,,}
@Override才能
public 才能;void onNothingSelected (AdapterView<?祝辞,arg0), {
,,,//,TODO Auto-generated method 存根
,,}
}
这期内容当中小编将会给大家带来有关如何在Android中使用转轮下拉菜单控件,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。
activity_main。xml
MainActivity。java
上述就是小编为大家分享的如何在Android中使用转轮下拉菜单控件了,如果刚好有类似的疑惑,不妨参照上述分析进行理解。如果想知道更多相关知识,欢迎关注行业资讯频道。
