WebAPI/WebNFC: Difference between revisions

WebAPI/WebNFC (view source)

Revision as of 22:35, 26 July 2013

414 bytes added , 26 July 2013

→‎NDEF Read Example

Lgarner

Confirmed users

153

edits

@@ Line 95: / Line 95: @@
 == NDEF Read Example ==
-   navigator.mozNfc.onndefdiscovered = function (event) {
+   navigator.mozNfc.ontechdiscovered = function (event) {
-     console.log("Discovered an NDEF message with " + event.ndefRecords.length + " records.");
-     event.ndefRecords.forEach(function (record) {
+    var tech = event.message.content.tech;
-      console.log("Found a " + record.tnf + " record" +
+     for (var i in tech) {
+      if (tech[i] == 'NDEF') {
+        var req = navigator.mozNfc.ndefRead();
+        req.onsuccess = function(e) {
+          // NDEF Message with array of NDEFRecords
+          var records = e.target.result;
+          handleNdefDiscovered(records);
+        };
+        req.onerror = function() {
+          console.log('ERROR: Failed to read NDEF on tag.');
+        };
+      }
+     }
+    function handleNdefDiscovered(records) {
+      records.forEach(function (record) {
+        console.log("Found a " + record.tnf + " record" +
                    " of type " + record.type +
                    " with ID " + record.id +
                    " and payload " + record.payload);
-      // Could dispatch event.message here to other web apps based on MIME type, URI, etc.
+        // Could dispatch event.message here to other web apps based on MIME type, URI, etc.
-    });
+      });
-   };
+    }
+   }
 == NDEF Write Tag Example ==