Spinner_AutoComplete

最新推荐文章于 2022-10-12 11:35:16 发布

ssmoom

最新推荐文章于 2022-10-12 11:35:16 发布

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分类专栏： Android随笔录

本文链接：https://blog.youkuaiyun.com/ssmoom/article/details/18404127

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本文介绍如何在Android应用中集成Spinner和AutoCompleteTextView，展示它们的联动功能，通过设置适配器、事件监听等实现课程选择与爱好推荐的交互体验。

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Spinner_AutoComplete_MainAct.java文件

/**
 * <activity android:name="com.Spinner_AutoComplete.Spinner_AutoComplete_MainAct" android:label="@string/app_name">
		    <intent-filter>
		        <action android:name="android.intent.action.MAIN">
		        <category android:name="android.intent.category.LAUNCHER">
		    </category></action></intent-filter>
		</activity>
 */

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class Spinner_AutoComplete_MainAct extends Activity {

private TextView spinner_autocomplete_tv_course;
	private Spinner spinner_autocomplete_sp_course;
	private TextView spinner_autocomplete_tv_hobby;
	private AutoCompleteTextView spinner_autocomplete_complete_hobby;
	
	private static final String[] courseStrs = {"语文", "数学", "英语", "物理", "化学", "生物", "体育"};
	private static final String[] hobbyStrs = {"book", "swim", "run"};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.spinner_autocomplete_mainact);
		
		spinner_autocomplete_tv_course = (TextView)findViewById(R.id.spinner_autocomplete_tv_course);
		//获取Spinner对象
		spinner_autocomplete_sp_course = (Spinner)findViewById(R.id.spinner_autocomplete_sp_course);
		spinner_autocomplete_tv_hobby = (TextView)findViewById(R.id.spinner_autocomplete_tv_hobby);
		//获取AutoCompleteTextView对象
		spinner_autocomplete_complete_hobby = (AutoCompleteTextView)findViewById(R.id.spinner_autocomplete_complete_hobby);
		
//		//创建一个ArrayAdapter
		ArrayAdapter<string> courseAdapter = new ArrayAdapter<string>(this, android.R.layout.simple_spinner_item, courseStrs);
		//设置下拉列表的风格 
		courseAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		//将adapter 添加到spinner中 
		spinner_autocomplete_sp_course.setAdapter(courseAdapter);
		//添加事件Spinner事件监听 
		spinner_autocomplete_sp_course.setOnItemSelectedListener(new OnItemSelectedListener() {
			@Override
			public void onItemSelected(AdapterView<?> arg0, View arg1,
					int arg2, long arg3) {
				// TODO Auto-generated method stub
				Toast.makeText(Spinner_AutoComplete_MainAct.this, "学习课程："+courseStrs[arg2], Toast.LENGTH_SHORT).show();
			}

@Override
			public void onNothingSelected(AdapterView<?> arg0) {
				// TODO Auto-generated method stub
				Toast.makeText(Spinner_AutoComplete_MainAct.this, "学习课程：null", Toast.LENGTH_SHORT).show();
			}
		});
		
		ArrayAdapter<string> hobbyAdapter = new ArrayAdapter<string>(this, android.R.layout.simple_spinner_item, hobbyStrs);
		hobbyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_item);
		//将AutoCompleteTextView与ArrayAdapter进行绑定
		spinner_autocomplete_complete_hobby.setAdapter(hobbyAdapter);
		//设置AutoCompleteTextView输入1个字符就进行提示  
		spinner_autocomplete_complete_hobby.setThreshold(1);  
	}

}

</string></string></string></string>

spinner_autocomplete_mainact.xml文件

<?xml version="1.0" encoding="utf-8"?>
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent">
    
    <textview android:id="@+id/spinner_autocomplete_tv_course" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="学习课程：">

stringsxml文件
<string name="spinner_prompt">select your sex</string>