From deff5c4a7560f45ef3e56c96770d16b79e9ff50f Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Mon, 11 Feb 2019 11:06:53 +0000
Subject: [PATCH] Fixed occasional invalid spinner

---
 .../eu/faircode/email/ContentLoadingProgressBar.java   | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/eu/faircode/email/ContentLoadingProgressBar.java b/app/src/main/java/eu/faircode/email/ContentLoadingProgressBar.java
index fdefcf928d..bd6cfc0ae2 100644
--- a/app/src/main/java/eu/faircode/email/ContentLoadingProgressBar.java
+++ b/app/src/main/java/eu/faircode/email/ContentLoadingProgressBar.java
@@ -27,6 +27,10 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 public class ContentLoadingProgressBar extends ProgressBar {
+    private int visibility;
+
+    private static final int VISIBILITY_DELAY = 500; // milliseconds
+
     public ContentLoadingProgressBar(@NonNull Context context) {
         this(context, null);
     }
@@ -37,6 +41,7 @@ public class ContentLoadingProgressBar extends ProgressBar {
 
     @Override
     public void setVisibility(int visibility) {
+        this.visibility = visibility;
         if (false && BuildConfig.DEBUG) {
             super.setVisibility(visibility);
             return;
@@ -44,7 +49,7 @@ public class ContentLoadingProgressBar extends ProgressBar {
         removeCallbacks(delayedShow);
         if (visibility == VISIBLE) {
             super.setVisibility(INVISIBLE);
-            postDelayed(delayedShow, 500);
+            postDelayed(delayedShow, VISIBILITY_DELAY);
         } else
             super.setVisibility(visibility);
     }
@@ -52,7 +57,8 @@ public class ContentLoadingProgressBar extends ProgressBar {
     private final Runnable delayedShow = new Runnable() {
         @Override
         public void run() {
-            ContentLoadingProgressBar.super.setVisibility(VISIBLE);
+            if (visibility == VISIBLE)
+                ContentLoadingProgressBar.super.setVisibility(VISIBLE);
         }
     };
 }