iApp-v3 java判断有无网络

s context="android.content.Context"
s cm="android.net.ConnectivityManager"
javags(a,null,context,"CONNECTIVITY_SERVICE")
javax(b,activity,context,"getSystemService","String",a)
javax(c,b,cm,"getActiveNetworkInfo")
f(c==null)
{
  ss type=0
}
else
{
  f(c?"WIFI")
  {
    ss type=1
  }
  else f(c?"MOBILE")
  {
    ss type=2
  }
}