AutoCompleteTextView实现搜索提示功能的实现

AutoCompleteTextView和EditText组件类似，都可以输入文本。但AutoCompleteTextView组件可以和一个字符串数组或List对象绑定，当用户输入两个及以上字符时，系统将在AutoCompleteTextView组件下方列出字符串数组中所有以输入字符开头的字符串，这一点和www.google.com的搜索框非常相似，当输入某一个要查找的字符串时，google搜索框就会列出以这个字符串开头的最热门的搜索字符串列表。

package com.loaderman.demo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        AutoCompleteTextView nameText = (AutoCompleteTextView)this.findViewById(R.id.name);
        String[] names = {"dfef", "dqwdasd", "dasd", "qwqw" , "qwsd", "dqwd", "abc", "acc"};
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, names);
        nameText.setAdapter(adapter);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.loaderman.asynctaskdemo.MainActivity">
    <AutoCompleteTextView
        android:id="@+id/name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:completionThreshold="1"/>

</LinearLayout>

效果图: