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How to create an Autocomplete Android EditText Example



How to create an Autocomplete Android EditText Example

In order to implement Autocomplete in Android EditText we need to use a AutoCompleteTextView View in the layout.xml file to represent a EditText.

This is a custom view that can be used to suggest text automatically while the user is typing.

The suggestions are displayed in Drop down menu.

Lets see an Example :


<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.code2care.example.autocompleteedittextexample.AutoCompleteEditText" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="48dp"
        android:text="@string/title" />

    <AutoCompleteTextView
        android:id="@+id/autocompleteEditTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="108dp"
        android:ems="10"
        android:text=""
        android:textColor="#000000" />

</RelativeLayout>



Activity.java file :


package com.code2care.example.autocompleteedittextexample;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class AutoCompleteEditText extends ActionBarActivity {

	AutoCompleteTextView autoTextView;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_auto_complete_edit_text);

		String[] ProgLanguages = { "Java", "C", "C++", ".Net", "PHP", "Perl",
				"Objective-c", "Small-Talk", "C#", "Ruby", "ASP", "ASP .NET" };

		autoTextView = (AutoCompleteTextView) findViewById(R.id.autocompleteEditTextView);

		ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,
				android.R.layout.select_dialog_item, ProgLanguages);

		//Used to specify minimum number of 
               //characters the user has to type in order to display the drop down hint.
		autoTextView.setThreshold(1);

		//Setting adapter
		autoTextView.setAdapter(arrayAdapter);

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.auto_complete_edit_text, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}


You can download the Source code for this tutorial at GitHub : https://github.com/code2care/AutoCompleteEditTextExample


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