Abrir configurações de Wi-Fi

Button wifiButton = (Button) findViewById(R.id.wifi_button);
wifiButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Intent openWifiSettings = new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS);
        startActivity(openWifiSettings);
    }
});