Checking for data connection

CheckDataConnection.java

// Permission needed in Manifest:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

// Code:
public boolean isDataConnectionAvailable() {
    ConnectivityManager connManager = (ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = connManager.getActiveNetworkInfo();
    return (netInfo != null && netInfo.isConnected());
}



private boolean isDataConnectionAvailable() {
    boolean haveConnectedWifi = false;
    boolean haveConnectedMobile = false;

    ConnectivityManager connManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo[] netInfo = connManager.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;
    }
    return haveConnectedWifi || haveConnectedMobile;
}

CheckDataConnectionFromBroadcast.java

// Permission needed in Manifest:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
....

// You can registering receiver in Manifest:
<receiver android:name="com.blackboard.androidtest.receiver.ConnectionChangeReceiver"
          android:label="NetworkConnection">
  <intent-filter>
    <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
  </intent-filter>
</receiver>

// or register it in code:
this.registerReceiver(this.connectionChangeReceiver, new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"));



// Code:
public class ConnectionChangeReceiver extends BroadcastReceiver
{
  @Override
  public void onReceive( Context context, Intent intent )
  {
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService( Context.CONNECTIVITY_SERVICE );
    NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
    NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(     ConnectivityManager.TYPE_MOBILE );
    if ( activeNetInfo != null )
    {
      Toast.makeText( context, "Active Network Type : " + activeNetInfo.getTypeName(), Toast.LENGTH_SHORT ).show();
    }
    if( mobNetInfo != null )
    {
      Toast.makeText( context, "Mobile Network Type : " + mobNetInfo.getTypeName(), Toast.LENGTH_SHORT ).show();
    }
  }
}