Enable And Disable Wi-Fi In Android Application Using Android Studio

Introduction

In this article, I will show you how to Enable and Disable WI-FI in Android apps using Android Studio. The information that an application can access includes connected network's link speed, IP address, negotiation state, other networks information. Applications can also scan, add, save, terminate, and initiate Wi-Fi connections.

Requirements

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

Steps should be followed

These are the steps to create a changed background and audio player Android app. I have included the source code below.

Step 1

Open Android Studio and start a new Android Studio Project.

 

Step 2

You can choose your application name and choose where your project is stored on the location. 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 the Android app in the activity_main.xml.



The XML code is given below

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

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imageView"
        android:src="@drawable/wifi"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true"
        android:layout_marginStart="14dp" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="76dp"
        android:text="Enable Wifi"
        android:layout_alignParentStart="true"
        android:layout_marginStart="28dp"
        android:layout_alignBottom="@+id/button2" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Disable Wifi"
        android:layout_marginBottom="52dp"
        android:layout_marginEnd="14dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true" />

</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.wifi;

import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    Button enableButton,disableButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        enableButton=(Button)findViewById(R.id.button1);
        disableButton=(Button)findViewById(R.id.button2);

        enableButton.setOnClickListener(new OnClickListener(){
            public void onClick(View v){
                WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
                wifi.setWifiEnabled(true);
            }
        });

        disableButton.setOnClickListener(new OnClickListener(){
            public void onClick(View v){
                WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
                wifi.setWifiEnabled(false);
            }
        });
    }
}

 

Step 8

 We need to Enable and Disable WI-FI. So, add WI-FI state permission in an AndroidManifest.xml.



The AndroidManifest.xml Code is given below

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="abu.wifi">
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

 Step 9

Now, go to menu bar and click "Make project" or press ctrl+f9 to debug it for errors.

Step 10

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

Conclusion

We have successfully created the "Enabled and Disabled WI-FI" Android application using Android Studio.