Auto-Complete Text View Android App Using Android Studio

Introduction

In this article, I will show you how to create an Auto-Complete Text View Android App using Android Studio.

.Requirements

• Android Studio version 2.3.3
• Little bit XML and JAVA knowledge.
• Android Emulator (or) Android mobile
• Download link (Android Studio)

Steps to be followed

Follow these steps to create an Auto-complete Text View Android App. I have included the source code in the attachment.

Step 1

Open Android Studio and start a new Android Studio Project.

Step 2

You can choose your application name and choose the location where your project is stored. If you wish to use C++ for coding the project, mark the "Include C++ support", and click "Next" button.

Step 3

Now, select the version of Android and select the target Android devices. We need to choose the SDK level which plays an important role in running the application.

Step 4

Now, add the activity and click "Next" button.

Step 5

Add Activity name and click "Finish".

Step 6

Go to activity_main.xml. This XML file contains the designing code for your Android app.

The XML code is given below:

<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"
    tools:context=".MainActivity" >

<TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="15dp"
        android:text="what is your favourite programming language" />

    <AutoCompleteTextView
        android:id="@+id/autoCompleteTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="36dp"
        android:layout_marginTop="19dp"
        android:ems="10"
        android:text=""
        android:layout_below="@+id/textView1"
        android:layout_alignEnd="@+id/textView1"
        android:layout_marginEnd="19dp">
        <requestFocus />
    </AutoCompleteTextView>
</RelativeLayout>

Step 7

Go to Main Activity.java. This Java program is the backend language for Android.



The java code is given below.

package abu.autocompletetextview;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class MainActivity extends Activity {
    String[] language ={"C","C++","Java",".NET","iPhone","Android","ASP.NET","PHP"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

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

        AutoCompleteTextView actv= (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);
        actv.setThreshold(1);
        actv.setAdapter(adapter);
        actv.setTextColor(Color.BLUE);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

Step 8

Now, go to menu bar and click "Make Project" or press ctrl+f9 to debug the error.



Step 9

Then, click "Run" button or press shift+f10 to run the project. And choose the "virtual machine" option and click OK.

Conclusion

We have successfully built Autocomplete Text View Android application.