remote-reader: Added log when tag doesn't support ISO-DEP (#331)

* remote-reader: Added log when tag doesn't support ISO-DEP

* Update remote-reader/app/src/main/java/com/vsmartcard/remotesmartcardreader/app/screaders/NFCReader.java

Co-authored-by: Frank Morgner <frankmorgner@gmail.com>

---------

Co-authored-by: Frank Morgner <frankmorgner@gmail.com>

Author: hackerpro17s

remote-reader/app/src/main/java/com/vsmartcard/remotesmartcardreader/app/screaders/NFCReader.java

@@ -171,7 +171,14 @@ public static NFCReader get(Intent intent, Activity activity) {
     public static NFCReader get(Tag tag, Activity activity) {
         NFCReader nfcReader = null;
         try {
-            nfcReader = new NFCReader(IsoDep.get(tag), activity);
+            IsoDep isoDep = IsoDep.get(tag);
+
+            if (isoDep == null) {
+                com.example.android.common.logger.Log.e(NFCReader.class.getName(), "Tag does not support ISO-DEP (ISO 14443-4) data transfer");
+                return null;
+            }
+
+            nfcReader = new NFCReader(isoDep, activity);
         } catch (IOException e) {
             e.printStackTrace();
         }