<AutocompleteTextView>:自动生成视图标签
<MultiAutoCompleteTextView>:可以实现多次匹配
android:completionThreshold="1":指定输入多少个字符开始匹配，默认值为：2
(1)在res资源文件中的values子文件中添加所需的xml文件
代码如下:
<?xml version="1.0" encoding="utf-8"?><resources><String-array name = "country_array"><item>Afghanistan</item><item>Albania</item><item>Alqeria</item><item>American</item><item>Andorra</item><item>Angola</item><item>Anguilla</item><item>Antarctica</item></String-array></resources>
(2)在activity_main.xml文件使用<AutocompleteTextView>
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><!--android:completionThreshold="1":将从输入第一个进行搜素匹配<AutoCompleteTextView>:自动生成视图--><AutoCompleteTextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/autoCompleteTextView"android:completionThreshold="2"android:layout_alignParentTop="true"android:layout_alignParentStart="true"/></RelativeLayout>
(3)在java文件中写业务逻辑
package com.example.lenovo.autocompletetextview;import android.content.res.Resources;import android.provider.Settings;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.AutoCompleteTextView;import java.util.Arrays;public class MainActivity extends AppCompatActivity {private AutoCompleteTextView autoCompleteTextView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);this.autoCompleteTextView = (AutoCompleteTextView) this.findViewById(R.id.autoCompleteTextView);//1.得到资源对象Resources resources = this.getResources();//2.读取指定资源的数组String[] country = resources.getStringArray(R.array.country_array);System.out.println("country="+ Arrays.toString(country));//3.实例化数组适配器对象ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,//系统提供好的布局文件,即TextView控件country//数据源);//4.设置当前控件的适配器对象adapterthis.autoCompleteTextView.setAdapter(adapter);}}
