Open wifi settings in android

main.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <TextView

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="How to open Wifi Settings Demo" />

    <Button

        android:id="@+id/open"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Open Wifi settings" />

</LinearLayout>

OpenWifiSettingsDemo.class

public class OpenWifiSettingsDemo extends Activity {

      @Override

      public void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);

            Button open = (Button)findViewById(R.id.open);

            open.setOnClickListener(new OnClickListener() {

                  @Override

                  public void onClick(View v) {

                        openWifiSettings();

                  }

            });

      }

      public void openWifiSettings(){

            final Intent intent = new Intent(Intent.ACTION_MAIN, null);

            intent.addCategory(Intent.CATEGORY_LAUNCHER);

            final ComponentName cn = newComponentName("com.android.settings","com.android.settings.wifi.WifiSettings");

            intent.setComponent(cn);

            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            startActivity( intent);

      }

}

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Thank you :)