Better error checking for first available image request

Reviewed By: oprisnik Differential Revision: D6759261 fbshipit-source-id: c27673645157712549d333ad26ca202b0afa975d
facebook · Jan 19, 2018 · 6449ca0 · 6449ca0
1 parent 88426d5
commit 6449ca0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drawee/src/main/java/com/facebook/drawee/controller/AbstractDraweeControllerBuilder.java b/drawee/src/main/java/com/facebook/drawee/controller/AbstractDraweeControllerBuilder.java
@@ -159,6 +159,9 @@ public BUILDER setFirstAvailableImageRequests(REQUEST[] firstAvailableImageReque
   public BUILDER setFirstAvailableImageRequests(
       REQUEST[] firstAvailableImageRequests,
       boolean tryCacheOnlyFirst) {
+    Preconditions.checkArgument(
+        firstAvailableImageRequests == null || firstAvailableImageRequests.length > 0,
+        "No requests specified!");
     mMultiImageRequests = firstAvailableImageRequests;
     mTryCacheOnlyFirst = tryCacheOnlyFirst;
     return getThis();