Android.net.wifi.WifiManager sınıfı, wifi bağlantısını yönetmek için kullanılabilir. Ağ eklemek, ağ devre dışı bırakmak, erişim noktalarını taramak, bağlantı kesmek vb. Için kullanılabilir.

<?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"
    android:orientation="vertical">

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="76dp"
        android:layout_marginTop="67dp"
        android:text="Wifi Aç" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_below="@+id/button1"
        android:layout_marginTop="44dp"
        android:text="Wifi Kapat" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/button2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="117dp"
        android:text="Webinyo.COM"
        android:textSize="30sp" />
</RelativeLayout>

import android.net.wifi.WifiManager;  
import android.os.Bundle;  
import android.app.Activity;  
import android.content.Context;  
import android.view.Menu;  
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);  
            }  
        });  
    }  
  
    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        // Inflate the menu; this adds items to the action bar if it is present.  
        getMenuInflater().inflate(R.menu.activity_main, menu);  
        return true;  
    }  
  
}

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />  
<uses-permission android:name="android.permission.INTERNET" />  
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>