workaround for ICS bug of sometimes returning null from mTag.getTagSe…

…rvice()
zonpantli · Mar 3, 2012 · c2bdb24 · c2bdb24
1 parent 6644e82
commit c2bdb24
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/src/com/chariotsolutions/nfc/plugin/Util.java b/src/com/chariotsolutions/nfc/plugin/Util.java
@@ -25,8 +25,15 @@ static JSONObject ndefToJSON(Ndef ndef) {
                 json.put("type", translateType(ndef.getType()));
                 json.put("maxSize", ndef.getMaxSize());
                 json.put("isWritable", ndef.isWritable());
-                json.put("canMakeReadOnly", ndef.canMakeReadOnly());
                 json.put("ndefMessage", messageToJSON(ndef.getCachedNdefMessage()));
+                // Workaround for bug in ICS (Android 4.0 and 4.0.1) where
+                // mTag.getTagService(); of the Ndef object sometimes returns null
+                // see http://issues.mroland.at/index.php?do=details&task_id=47
+                try {
+                  json.put("canMakeReadOnly", ndef.canMakeReadOnly());
+                } catch (NullPointerException e) {
+                  json.put("canMakeReadOnly", null);
+                }
             } catch (JSONException e) {
                 Log.e(TAG, "Failed to convert ndef into json: " + ndef.toString(), e);
             }