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

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(); 
  } 
 }); 
 } 
 
}