Android实时搜索框的实例代码

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xml version="1.0" encoding="utf-8"?>

android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

 xmlns:app="http://schemas.android.com/apk/res-auto"

 xmlns:tools="http://schemas.android.com/tools"

 android:layout_width="match_parent"

 android:layout_height="match_parent"

 tools:context="com.amy.searchtest.MainActivity">

LinearLayout

 android:orientation="horizontal"

 android:layout_width="fill_parent"

 android:layout_height="fill_parent">

 AutoCompleteTextView

 android:id="@+id/autoCompleteTextView1"

 android:layout_width="wrap_content"

 android:layout_height="wrap_content"

 android:text=""

 android:completionThreshold="2"

 android:completionHint="请输入搜索内容..."

 android:layout_weight="7"/>

 Button

 android:id="@+id/button1"

 android:layout_width="wrap_content"

 android:layout_height="wrap_content"

 android:text="搜索"

 android:layout_weight="1"

 android:layout_marginLeft="10px"/>

LinearLayout>

android.support.constraint.ConstraintLayout>

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package com.amy.searchtest;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

 public static final String[] CONTENTS = new String[]{"zg陕西","zg海南","zg新疆","zg西藏"};

 AutoCompleteTextView textView;

 @Override

 protected void onCreate(Bundle savedInstanceState) {

 super.onCreate(savedInstanceState);

 setContentView(R.layout.activity_main);

 textView = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);

 //创建一个ArrayAdapter适配器

 ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_dropdown_item_1line,CONTENTS);

 textView.setAdapter(adapter);

 Button button = (Button) findViewById(R.id.button1);

 button.setOnClickListener(new View.OnClickListener() {

  @Override

  public void onClick(View v) {

  Toast.makeText(MainActivity.this, textView.getText().toString(),Toast.LENGTH_SHORT).show();

  }

 });

 }

}