AutoCompleteTextView, subclass of EditText with Auto-complete function

AutoCompleteTextView is a subclass of EditText that shows completion suggestions automatically while the user is typing.


To implement AutoCompleteTextView in your app:

Add the AutoCompleteTextView to your layout:

<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="20dp"
android:orientation="vertical"
tools:context="com.blogspot.android_er.androidedittextchanged.MainActivity">

<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold"/>

<AutoCompleteTextView
android:id="@+id/autocompletetextview"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />


</LinearLayout>


Edit res/values/strings.xml to add array that contains all text suggestions.

<resources>
<string name="app_name">AndroidEditTextChanged</string>
<string-array name="suggestion">
<item>January</item>
<item>February</item>
<item>March</item>
<item>April</item>
<item>May</item>
<item>June</item>
<item>July</item>
<item>August</item>
<item>September</item>
<item>October</item>
<item>November</item>
<item>December</item>
</string-array>

</resources>

Set adapter using the string array for the AutoCompleteTextView

package com.blogspot.android_er.androidedittextchanged;

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

public class MainActivity extends AppCompatActivity {

AutoCompleteTextView autoCompleteTextView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
autoCompleteTextView =
(AutoCompleteTextView)findViewById(R.id.autocompletetextview);

String[] suggestion = getResources().getStringArray(R.array.suggestion);
ArrayAdapter<String> adapter =
new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, suggestion);
autoCompleteTextView.setAdapter(adapter);


}

}

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