第十九篇-自动完成文本框视图

效果图：

两个文件：

activity_main.xml

<?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=".MainActivity">

    <AutoCompleteTextView
        android:id="@+id/autoCompleteTestView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="@string/prompt"/>

</android.support.constraint.ConstraintLayout>

 MainActivity.java

package com.example.aimee.autocompletetestviewtest;

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

public class MainActivity extends AppCompatActivity {
    private static final String[] phonenumberStr = new String[]{
            "888888888",
            "856688888",
            "777777777",
            "866666666",
            "737777777",
            "856788888"
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ArrayAdapter<String>adapter=new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,phonenumberStr);
        AutoCompleteTextView autoCompleteTextView=findViewById(R.id.autoCompleteTestView);
        autoCompleteTextView.setAdapter(adapter);

    }
}