Android – how to configure portable Wi Fi hotspot settings via onclick?

How do I open the following directory: settings / wireless and networking / binding and portable hotspot / portable Wi Fi hotspot settings / configure portable Wi Fi hotspot / click the button? I want to use the onclick method instead of the ID method to achieve this. Here is my code

<RadioButton
        android:onClick="togglewifi"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:checked="true"
        android:text="Toggle Wifi" />


public void togglewifi(View view) { 
    Intent intent = new Intent(             );
    startActivity(intent);
}

resolvent:

This code applies to 4.2.2

    final Intent intent = new Intent(Intent.ACTION_MAIN, null);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    final ComponentName cn = new ComponentName("com.android.settings", "com.android.settings.TetherSettings");
    intent.setComponent(cn);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity( intent);