If the app is not running, the callback has to be called later (#42)

README.md

@@ -55,6 +55,7 @@ More informations can be found [here](https://build.phonegap.com/plugins/331).
 - [enhancement:] Added 'hourly' as a new repeat time aliase.
 - [feature:] Repeat with custom intervals on Android.
 - **[bugfix:]** Callbacks are called with the ID as a number and not as a string.
+- [enhancement:] The background callback on Android is called, even the app is not running when the notification is tapped.
 
 #### Version 0.6.3 (12.12.2013)
 - [bugfix:] Black screen on Android.

src/android/ReceiverActivity.java

@@ -21,6 +21,9 @@
 
 package de.appplant.cordova.plugin.localnotification;
 
+import java.util.Timer;
+import java.util.TimerTask;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -73,10 +76,22 @@ public class ReceiverActivity extends Activity {
     private void invokeBackgroundCallback (Options options) {
         String function = options.getBackground();
 
+        if (TextUtils.isEmpty(function))
+            return;
+
+        final String js = "setTimeout('" + function + "(\"" + options.getId() + "\")',0)";
+
         // after reboot, LocalNotification.webView is always null
-        // may be call background callback later
-        if (!TextUtils.isEmpty(function) && LocalNotification.webView != null) {
-            LocalNotification.webView.sendJavascript("setTimeout('" + function + "(\"" + options.getId() + "\")',0)");
+        // call background callback later
+        if (LocalNotification.webView == null) {
+            new Timer().schedule(new TimerTask() {
+                @Override
+                public void run() {
+                    LocalNotification.webView.sendJavascript(js);
+                }
+            }, 4000);
+        } else {
+            LocalNotification.webView.sendJavascript(js);
         }
     }
 }