Null checks the image url before loading via picasso.

Author: davidtruong

iterableapi/src/main/java/com/iterable/iterableapi/IterableInAppManager.java

@@ -156,8 +156,7 @@ static void showFullScreenDialog(Context context, JSONObject dialogParameters, S
         verticalLayout.addView(imageView);
         try {
             Class picassoClass = Class.forName(IterableConstants.PICASSO_CLASS);
-            if (picassoClass != null) {
-
+            if (picassoClass != null && dialogParameters.optString(IterableConstants.ITERABLE_IN_APP_MAIN_IMAGE) != null) {
                 Picasso.
                         with(context.getApplicationContext()).
                         load(dialogParameters.optString(IterableConstants.ITERABLE_IN_APP_MAIN_IMAGE)).

iterableapi/src/main/java/com/iterable/iterableapi/IterableNotification.java

@@ -45,7 +45,7 @@ public Notification build() {
         handler.post(new Runnable() {
             @Override
             public void run() {
-                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
+                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN && imageUrl != null) {
                     final RemoteViews bigContentView = notification.bigContentView;
                     try {
                         Class picassoClass = Class.forName(IterableConstants.PICASSO_CLASS);
@@ -105,7 +105,7 @@ public static IterableNotification createNotification(Context context, Bundle ex
             .setContentTitle(applicationName)
             .setPriority(Notification.PRIORITY_HIGH)
             .setContentText(notificationBody);
-        
+
         if (pushImage != null) {
             notificationBuilder.imageUrl = pushImage;
             notificationBuilder.setContentText(notificationBody)