Code sharing _android to determine if the network is available in Android

 package cn.hackcoder.beautyreader.broadcast;
Import Android.content.BroadcastReceiver;
Import Android.content.Context;
Import android.content.Intent;
Import Android.net.ConnectivityManager;
Import Android.util.Log;

Import Android.widget.Toast;
Import cn.hackcoder.beautyreader.activity.base.BaseActivity;

Import Cn.hackcoder.beautyreader.utils.NetWorkUtils; public class Networkstatusreceiver extends Broadcastreceiver {public networkstatusreceiver () {} @Override Pub
    LIC void OnReceive (context context, Intent Intent) {String action = intent.getaction (); if (Action.equals (connectivitymanager.connectivity_action)) {Toast.maketext (context, "network changed", Toast.lengt
      H_long). Show ();
    baseactivity.isnetworkconnected = Networkutils.getapntype (context) >0; }
  }
}

 Package cn.hackcoder.beautyreader.utils;
Import Android.content.Context;
Import Android.net.ConnectivityManager;
Import Android.net.NetworkInfo;


Import Android.telephony.TelephonyManager;
/**  * Created by Hackcoder on 15-1-25.  */public class Networkutils {   /**      * Determine if there is a network connection      * @param cont Ext      * @return      */    public static Boolean isnetworkconnected (Context Co ntext) {        if (context!= null) {            Connectivitymanager  Mconnectivitymanager = (Connectivitymanager) context                    
. Getsystemservice (Context.connectivity_service);
            Networkinfo mnetworkinfo = Mconnectivitymanager.getactivenetworkinfo ();             if (mnetworkinfo!= null) {          &NBSP
    return mnetworkinfo.isavailable ();
            {       }         return false;    }    /**      * determine if WiFi is available      * @param context      * @return      */    public static Boolean iswificonnected (context context) {  &NBSP ;     IF (context!= null) {          Connectivitymanager   Mconnectivitymanager = (Connectivitymanager) Context                     Getsystemservice (Cont Ext.
Connectivity_service);             Networkinfo mwifinetworkinfo = mconnectivitymanager        
           . Getnetworkinfo (Connectivitymanager.type_wifi);             if (mwifinetworkinfo!= null) {        &nbsp
      return mwifinetworkinfo.isavailable ();
            {       }         return false;    }    /**      * determine if mobile network is available      * @param context   &NBSP ;  * @return      */    public static Boolean ismobileconnected (context context) {  &NB Sp     IF (context!= null) {          Connectivitymanager   Mconnectivitymanager = (Connectivitymanager) Context                     Getsystemservice (Cont Ext.
Connectivity_service);             Networkinfo mmobilenetworkinfo = mconnectivitymanager       &NBSP ;
           . Getnetworkinfo (Connectivitymanager.type_mobile);             if (mmobilenetworkinfo!= null) { 
              return mmobilenetworkinfo.isavailable ();
            {       }         return false;     }    /**      * get current network connection type information      * @param context      * @return      */    public static int Getconnectedtype (context context) {        IF (context!= null) {          Connectivitymanager   Mconnectivitymanager = (Connectivitymanager) Context                     Getsystemservice (Cont Ext.
Connectivity_service);
            Networkinfo mnetworkinfo = Mconnectivitymanager.getactivenetworkinfo ();             if (mnetworkinfo!= null && mnetworkinfo.isavailable ()) {                return Mnetworkinfo.gettype ();
                    {        return-1;    }    /**      * get current network status: No network 0:wifi network 1:3g Network 2:2g Network 3      * &nbsp ;    * @param      * @return      */    public static int GETAPNT Ype (Context context) {        int nettype = 0;         Connectivitymanager CONNMG R = (Connectivitymanager) context                 Getsystemservice (Context.connec
Tivity_service);
        Networkinfo networkinfo = Connmgr.getactivenetworkinfo ();         if (Networkinfo = null) {            return NetType   &N Bsp
   }         int ntype = Networkinfo.gettype ();         if (ntype = ConnectivitymanAger.  Type_wifi) {            NetType = 1;//WIFI        } else if (ntype = = Connectivitymanager.type_mobile) {            int nsubtype = Networkinfo.getsubtype (); &nb Sp           Telephonymanager mtelephony = (telephonymanager) context         &N Bsp
         . Getsystemservice (Context.telephony_service);             if (Nsubtype = telephonymanager.network_type_umts         & nbsp           &&!mtelephony.isnetworkroaming ()) {                NetType = 2;//3G            } else {          &NBS P     NetType = 3;//2G                    }     &N Bsp
  return nettype;    }
} 

Registered:

   <receiver
      android:name= ". Broadcast. Networkstatusreceiver "
      android:enabled=" true "
      android:exported=" true ">
      <intent-filter>
        <action android:name= "Android.net.conn.CONNECTIVITY_CHANGE"/>
      </intent-filter>
    </ Receiver>