如何以编程方式检查Android上是否启用了“使用无线网络”？

Question

I don't want to check if there is any connectivity over WIFI or 3G! I just want to verify (and not change!) if the "Use wireless networks"-CheckBox is enabled (the one you can set in Settings > Location and security > My location > HERE) Thanx

Answer 1

Code from RajaReddy will check if Wifi is enabled for network. If you want to know if Wifi is enabled for positioning then this should do (replace "context" with something useful)

ContentResolver cr = context.getContentResolver();
boolean wifiEnabled = Settings.Secure.isLocationProviderEnabled(cr, LocationManager.NETWORK_PROVIDER);

example code for API Level < 8

private static boolean isWifiLocationEnabled (Context context) {
    ContentResolver cr = context.getContentResolver();
    String enabledProviders = Settings.Secure.getString(cr, Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
    if (!TextUtils.isEmpty(enabledProviders)) {
        // not the fastest way to do that :)
        String[] providersList = TextUtils.split(enabledProviders, ",");
        for (String provider : providersList) {
            if (LocationManager.NETWORK_PROVIDER.equals(provider)) {
                return true;
            }
        }
    }
    return false;
}

Answer 2

use this code

public Boolean isNetAvailable(Context con) {

   try {
      ConnectivityManager connectivityManager = (ConnectivityManager) con.getSystemService(Context.CONNECTIVITY_SERVICE);
      NetworkInfo wifiInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

      if(wifiInfo.isConnected()) {
         return true;
      }
   }catch(Exception e){
      e.printStackTrace();
   }
   return false;
}

and following permissions are required for this

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