From 1a6666a116fd8b9e8637956de2b41a1c315dd470 Mon Sep 17 00:00:00 2001
From: Bhavik Patel <bhavik@hurdlr.com>
Date: Mon, 23 Jul 2018 16:54:39 -0700
Subject: [PATCH] Check if config contains a key before fetching. Default to 0
 (#19808)

Summary:
Potential Fix to #19793

modified the code and tried to recreate the bug and was unable to. The red screen never popped up and nothing else seemed to be affected in a negative way.

[ANDROID] [BUGFIX] [FrameBasedAnimationDriver.java] - Safely unwrapping ReadableMap by defaulting to 0 if key not present.
Pull Request resolved: https://github.com/facebook/react-native/pull/19808

Differential Revision: D8960388

Pulled By: hramos

fbshipit-source-id: 400cc0467e041dfcf2d6b1ec0b61d716c2de159f
---
 .../com/facebook/react/animated/FrameBasedAnimationDriver.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java b/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java
index f8fca1f9d22921..3029ef8fc1cfd8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java
@@ -41,7 +41,7 @@ public void resetConfig(ReadableMap config) {
     for (int i = 0; i < numberOfFrames; i++) {
       mFrames[i] = frames.getDouble(i);
     }
-    mToValue = config.getDouble("toValue");
+    mToValue = config.hasKey("toValue") ? config.getDouble("toValue") : 0;
     mIterations = config.hasKey("iterations") ? config.getInt("iterations") : 1;
     mCurrentLoop = 1;
     mHasFinished = mIterations == 0;