From 261207a4c01dc865358de125702315404cee5c01 Mon Sep 17 00:00:00 2001
From: Daniel Gultsch <daniel@gultsch.de>
Date: Mon, 7 Dec 2020 09:03:01 +0100
Subject: [PATCH] ignore whitespace when trying to detect provisioning json

fixes #3940
---
 .../java/eu/siacs/conversations/ui/UriHandlerActivity.java     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java b/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java
index fdebd6a56..30c330c4d 100644
--- a/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java
@@ -246,6 +246,7 @@ public class UriHandlerActivity extends AppCompatActivity {
     }
 
     private static boolean looksLikeJsonObject(final String input) {
-        return input.charAt(0) == '{' && input.charAt(input.length() - 1) == '}';
+        final String trimmed = Strings.emptyToNull(input).trim();
+        return trimmed.charAt(0) == '{' && trimmed.charAt(trimmed.length() - 1) == '}';
     }
 }
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