判断WIFI与3G是否可以使用

public class CheckNetWork {
/*
* 判断WIFI是否可以使用
*/
public static boolean isWiFiActive(Context context) {
WifiManager mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
int ipAddress = wifiInfo == null ? 0 : wifiInfo.getIpAddress();
if(mWifiManager.isWifiEnabled() && ipAddress != 0){
return true;
}else{
return false;
}
}

/*
* 判断3G网络是否可以使用
*/
public static boolean isNetworkAvailable( Context context) {
ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
return false;
} else {
NetworkInfo info = connectivity.getActiveNetworkInfo();
if(info == null){
return false;
}
}
return true;
}
}