I need to detect in android if there is any connection Wifi
or 3G
( or 3G+
) or EDGE
in android. When there is an connection wifi
or 3G
I can send photos to server, and when is only a connection EDGE
to not send them to server.
I saw that wifi connectivity can be detected with ConnectivityManager.TYPE_WIFI
and with ConnectivityManager.TYPE_MOBILE
and TelephonyManager.NETWORK_TYPE_EDGE
can be detected EDGE connection. But how can be detected 3G or 3G+?
Android devices detect captive portals requesting a specific URL, that currently is http://connectivitycheck.gstatic.com/generate_204. If they receive a 204 response then there's connectivity. If they receive a 30x response, then there's a captive portal in the way.
You should be able to use the ConnectivityManager to get the state of the Wi-Fi adapter. From there you can check if it is connected or even available. AndroidManifest. xml for this to work.
In android, we can determine the internet connection status easily by using getActiveNetworkInfo() method of ConnectivityManager object. Following is the code snippet of using the ConnectivityManager class to know whether the internet connection is available or not.
https://gist.github.com/emil2k/5130324
import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.telephony.TelephonyManager; /** * Check device's network connectivity and speed * @author emil http://stackoverflow.com/users/220710/emil * */ public class Connectivity { /** * Get the network info * @param context * @return */ public static NetworkInfo getNetworkInfo(Context context){ ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo(); } /** * Check if there is any connectivity * @param context * @return */ public static boolean isConnected(Context context){ NetworkInfo info = Connectivity.getNetworkInfo(context); return (info != null && info.isConnected()); } /** * Check if there is any connectivity to a Wifi network * @param context * @return */ public static boolean isConnectedWifi(Context context){ NetworkInfo info = Connectivity.getNetworkInfo(context); return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_WIFI); } /** * Check if there is any connectivity to a mobile network * @param context * @return */ public static boolean isConnectedMobile(Context context){ NetworkInfo info = Connectivity.getNetworkInfo(context); return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_MOBILE); } /** * Check if there is fast connectivity * @param context * @return */ public static boolean isConnectedFast(Context context){ NetworkInfo info = Connectivity.getNetworkInfo(context); return (info != null && info.isConnected() && Connectivity.isConnectionFast(info.getType(),info.getSubtype())); } /** * Check if the connection is fast * @param type * @param subType * @return */ public static boolean isConnectionFast(int type, int subType){ if(type==ConnectivityManager.TYPE_WIFI){ return true; }else if(type==ConnectivityManager.TYPE_MOBILE){ switch(subType){ case TelephonyManager.NETWORK_TYPE_1xRTT: return false; // ~ 50-100 kbps case TelephonyManager.NETWORK_TYPE_CDMA: return false; // ~ 14-64 kbps case TelephonyManager.NETWORK_TYPE_EDGE: return false; // ~ 50-100 kbps case TelephonyManager.NETWORK_TYPE_EVDO_0: return true; // ~ 400-1000 kbps case TelephonyManager.NETWORK_TYPE_EVDO_A: return true; // ~ 600-1400 kbps case TelephonyManager.NETWORK_TYPE_GPRS: return false; // ~ 100 kbps case TelephonyManager.NETWORK_TYPE_HSDPA: return true; // ~ 2-14 Mbps case TelephonyManager.NETWORK_TYPE_HSPA: return true; // ~ 700-1700 kbps case TelephonyManager.NETWORK_TYPE_HSUPA: return true; // ~ 1-23 Mbps case TelephonyManager.NETWORK_TYPE_UMTS: return true; // ~ 400-7000 kbps /* * Above API level 7, make sure to set android:targetSdkVersion * to appropriate level to use these */ case TelephonyManager.NETWORK_TYPE_EHRPD: // API level 11 return true; // ~ 1-2 Mbps case TelephonyManager.NETWORK_TYPE_EVDO_B: // API level 9 return true; // ~ 5 Mbps case TelephonyManager.NETWORK_TYPE_HSPAP: // API level 13 return true; // ~ 10-20 Mbps case TelephonyManager.NETWORK_TYPE_IDEN: // API level 8 return false; // ~25 kbps case TelephonyManager.NETWORK_TYPE_LTE: // API level 11 return true; // ~ 10+ Mbps // Unknown case TelephonyManager.NETWORK_TYPE_UNKNOWN: default: return false; } }else{ return false; } } }
public class WifiState { Context context; public WifiState(Context context) { this.context = context; } public void haveNetworkConnection() { boolean haveConnectedWifi = false; boolean haveConnectedMobile = false; ConnectivityManager cm = (ConnectivityManager) context .getSystemService(context.CONNECTIVITY_SERVICE); NetworkInfo[] netInfo = cm.getAllNetworkInfo(); for (NetworkInfo ni : netInfo) { if (ni.getTypeName().equalsIgnoreCase("WIFI")) if (ni.isConnected()) haveConnectedWifi = true; if (ni.getTypeName().equalsIgnoreCase("MOBILE")) if (ni.isConnected()) haveConnectedMobile = true; } if (haveConnectedWifi == false && haveConnectedMobile == false) { //do something to handle if wifi & mobiledata is disabled } else { //do something else.. } }
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