Add message when no internet

app/src/main/java/net/pokeranalytics/android/ui/fragment/SubscriptionFragment.kt

@@ -1,6 +1,9 @@
 package net.pokeranalytics.android.ui.fragment
 
+import android.content.Context
 import android.graphics.drawable.GradientDrawable
+import android.net.ConnectivityManager
+import android.net.NetworkInfo
 import android.os.Build
 import android.os.Bundle
 import android.text.SpannableStringBuilder
@@ -48,6 +51,15 @@ class SubscriptionFragment : PokerAnalyticsFragment(), SkuDetailsResponseListene
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
 
+		val cm = requireContext().getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+		val activeNetwork: NetworkInfo? = cm.activeNetworkInfo
+		val isConnected: Boolean = activeNetwork?.isConnected == true
+
+		if (!isConnected) {
+			Toast.makeText(requireContext(), R.string.billingclient_unavailable, Toast.LENGTH_LONG).show()
+			return
+		}
+
 		this.showLoader(R.string.loading_please_wait)
 		if (!AppGuard.requestProducts(this)) {
 			this.hideLoader()