Log errors by default (#1712)

Author: samtstern

database/src/main/java/com/firebase/ui/database/paging/FirebaseRecyclerPagingAdapter.java

@@ -229,8 +229,8 @@ public void onBindViewHolder(@NonNull VH viewHolder, int position) {
      *
      * When {@link DatabaseError} is caught the adapter will stop loading any data
      */
-    protected void onError(@NonNull DatabaseError databaseError){
-
+    protected void onError(@NonNull DatabaseError databaseError) {
+        Log.w(TAG, "onError", databaseError.toException());
     }
 
     @NonNull

firestore/src/main/java/com/firebase/ui/firestore/paging/FirestorePagingAdapter.java

@@ -223,6 +223,6 @@ protected void onLoadingStateChanged(@NonNull LoadingState state) {
      * When {@link Exception} is caught the adapter will stop loading any data
      */
     protected void onError(@NonNull Exception e) {
-        // For overriding
+        Log.w(TAG, "onError", e);
     }
 }