From d0eaee60e938ff6dfc153054562591c5b0b9d38b Mon Sep 17 00:00:00 2001
From: Greyson Parrelli <greyson@signal.org>
Date: Fri, 20 Jul 2018 14:08:58 -0700
Subject: [PATCH] Add additional safeguards for picking an expiration timer
 frame.

Fixes #8010
---
 .../securesms/components/ExpirationTimerView.java             | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/org/thoughtcrime/securesms/components/ExpirationTimerView.java b/src/org/thoughtcrime/securesms/components/ExpirationTimerView.java
index 33c7a8586..c3f58ebc5 100644
--- a/src/org/thoughtcrime/securesms/components/ExpirationTimerView.java
+++ b/src/org/thoughtcrime/securesms/components/ExpirationTimerView.java
@@ -54,6 +54,8 @@ public class ExpirationTimerView extends android.support.v7.widget.AppCompatImag
   public void setPercentComplete(float percentage) {
     float percentFull = 1 - percentage;
     int frame = (int) Math.ceil(percentFull * (frames.length - 1));
+
+    frame = Math.max(0, Math.min(frame, frames.length - 1));
     setImageResource(frames[frame]);
   }
 
@@ -77,7 +79,7 @@ public class ExpirationTimerView extends android.support.v7.widget.AppCompatImag
     long  progressed      = System.currentTimeMillis() - startedAt;
     float percentComplete = (float)progressed / (float)expiresIn;
 
-    return Math.min(percentComplete, 1);
+    return Math.max(0, Math.min(percentComplete, 1));
   }
 
   private long calculateAnimationDelay(long startedAt, long expiresIn) {