How to call Wi-Fi settings screen from my application using Android
Look at android.provider.Settings for a series of Intent actions you can use to launch various settings screens (e.g., ACTION_WIFI_SETTINGS).
EDIT: Add the coding line.
startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
example
ConnectivityManager manager = (ConnectivityManager) getSystemService(MainActivity.CONNECTIVITY_SERVICE);/* * 3G confirm */Boolean is3g = manager.getNetworkInfo( ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();/* * wifi confirm */Boolean isWifi = manager.getNetworkInfo( ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();if (is3g) { textView.setText("3G");} else if (isWifi) { textView.setText("wifi");} else { textView.setText("nothing"); // Activity transfer to wifi settings startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));}