From afdc8253df19f717e5c1a11b798eb3906a6b2f39 Mon Sep 17 00:00:00 2001
From: markushi <markus.hintersteiner@sentry.io>
Date: Mon, 26 May 2025 16:27:05 +0200
Subject: [PATCH 1/3] Fix GestureDetectorCompat crashes if initialized from
 background thread

---
 .../core/internal/gestures/SentryWindowCallback.java  |  4 +++-
 sentry/src/main/java/io/sentry/Sentry.java            | 11 ++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/sentry-android-core/src/main/java/io/sentry/android/core/internal/gestures/SentryWindowCallback.java b/sentry-android-core/src/main/java/io/sentry/android/core/internal/gestures/SentryWindowCallback.java
index 473a59b5b00..edb9c9f9daa 100644
--- a/sentry-android-core/src/main/java/io/sentry/android/core/internal/gestures/SentryWindowCallback.java
+++ b/sentry-android-core/src/main/java/io/sentry/android/core/internal/gestures/SentryWindowCallback.java
@@ -1,6 +1,8 @@
 package io.sentry.android.core.internal.gestures;
 
 import android.content.Context;
+import android.os.Handler;
+import android.os.Looper;
 import android.view.MotionEvent;
 import android.view.Window;
 import androidx.core.view.GestureDetectorCompat;
@@ -27,7 +29,7 @@ public SentryWindowCallback(
       final @Nullable SentryOptions options) {
     this(
         delegate,
-        new GestureDetectorCompat(context, gestureListener),
+        new GestureDetectorCompat(context, gestureListener, new Handler(Looper.getMainLooper())),
         gestureListener,
         options,
         new MotionEventObtainer() {});
diff --git a/sentry/src/main/java/io/sentry/Sentry.java b/sentry/src/main/java/io/sentry/Sentry.java
index 5345178f3ec..aa6d71e4476 100644
--- a/sentry/src/main/java/io/sentry/Sentry.java
+++ b/sentry/src/main/java/io/sentry/Sentry.java
@@ -345,7 +345,16 @@ private static void init(final @NotNull SentryOptions options, final boolean glo
         // and Scopes was still NoOp.
         // Registering integrations here make sure that Scopes is already created.
         for (final Integration integration : options.getIntegrations()) {
-          integration.register(ScopesAdapter.getInstance(), options);
+          try {
+            integration.register(ScopesAdapter.getInstance(), options);
+          } catch (Throwable t) {
+            options
+                .getLogger()
+                .log(
+                    SentryLevel.WARNING,
+                    "Failed to register the integration " + integration.getClass().getName(),
+                    t);
+          }
         }
 
         notifyOptionsObservers(options);

From f43438c94054ea3e212b8094f9416b1200cacca4 Mon Sep 17 00:00:00 2001
From: markushi <markus.hintersteiner@sentry.io>
Date: Mon, 26 May 2025 16:36:52 +0200
Subject: [PATCH 2/3] Add tests

---
 sentry/src/test/java/io/sentry/SentryTest.kt | 21 ++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/sentry/src/test/java/io/sentry/SentryTest.kt b/sentry/src/test/java/io/sentry/SentryTest.kt
index 9384d171673..311afce803f 100644
--- a/sentry/src/test/java/io/sentry/SentryTest.kt
+++ b/sentry/src/test/java/io/sentry/SentryTest.kt
@@ -125,6 +125,27 @@ class SentryTest {
         verify(integration2).close()
     }
 
+    @Test
+    fun `if a single integration crashes, the SDK and other integrations are still initialized`() {
+        val goodIntegrationInitialized = AtomicBoolean(false)
+        val goodIntegration = Integration { scopes, options ->
+            // no-op
+            goodIntegrationInitialized.set(true)
+        }
+
+        val badIntegration = Integration { scopes, options -> throw IllegalStateException("bad integration") }
+
+        Sentry.init {
+            it.dsn = dsn
+            it.integrations.clear()
+            it.integrations.add(badIntegration)
+            it.integrations.add(goodIntegration)
+        }
+
+        assertTrue(Sentry.isEnabled())
+        assertTrue(goodIntegrationInitialized.get())
+    }
+
     interface CloseableIntegration : Integration, Closeable
 
     @Test

From 37f3d57f5811c1523476dd76cac297f9affd555c Mon Sep 17 00:00:00 2001
From: markushi <markus.hintersteiner@sentry.io>
Date: Mon, 26 May 2025 16:39:06 +0200
Subject: [PATCH 3/3] Update Changelog

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f20d0a8c8cb..4f617f8e8d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Features
+
+- Fix SDK init crash if initialized from background thread while an activiy is resumed ([#4449](https://github.com/getsentry/sentry-java/pull/4449))
+
 ## 8.13.0
 
 ### Features