Fennec/NativeUI/Messages: Difference between revisions

Fennec/NativeUI/Messages (view source)

228 bytes added , 2 February 2013

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@@ Line 2: / Line 2: @@
 <pre>
-function SendMessageToJava(obj) {
+let message = {
-    Cc["@mozilla.org/android/bridge;1"]
+  type: "MyMessage",
-        .getService(Ci.nsIAndroidBridge)
+  title: "Cool Thing",
-        .handleGeckoMessage(JSON.stringify(obj));
+  rating: aSomeValue
-}
+};
+sendMessageToJava(message);
 </pre>
+The message object is serialized into JSON, sent to Java, and received at
-The message ends up in embedding/android/GeckoAppShell.java handleGeckoMessage().  Right now, it is just a big switch that dispatches to the right handler.
+[http://mxr.mozilla.org/projects-central/source/birch/embedding/android/GeckoAppShell.java  handleGeckoMessage()]. The particular activity in need of events need to register and unregister for the required events. [http://mxr.mozilla.org/projects-central/source/birch/embedding/android/GeckoApp.java  GeckoApp.java]'s onCreate() and onDestroy() are good examples.
 == Java -> Gecko ==