Added code to stop watch app before starting it to try to improve reliability of app start.

app/src/main/AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="uk.org.openseizuredetector"
     android:versionCode="24"
-    android:versionName="2.0.3" >
+    android:versionName="2.0.3a" >
 
     <uses-sdk android:minSdkVersion="14" />
 

app/src/main/java/uk/org/openseizuredetector/SdDataSourcePebble.java

@@ -401,9 +401,18 @@ public class SdDataSourcePebble extends SdDataSource {
      * Attempt to start the pebble_sd watch app on the pebble watch.
      */
     public void startWatchApp() {
-        Log.v(TAG, "startWatchApp()");
-        PebbleKit.startAppOnPebble(mContext, SD_UUID);
-
+        Log.v(TAG, "startWatchApp() - closing app first");
+        // first close the watch app if it is running.
+        PebbleKit.closeAppOnPebble(mContext, SD_UUID);
+        // then start it after a 1 second delay.
+        final Handler handler = new Handler();
+        handler.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                Log.v(TAG, "startWatchApp() - starting watch app...");
+                PebbleKit.startAppOnPebble(mContext, SD_UUID);
+            }
+        }, 1000);
     }
 
     /**