From 716fc1f4fa840efee4e4dfb3c6596273c083aa62 Mon Sep 17 00:00:00 2001
From: Andrew Gallasch <andrewgallasch@gmail.com>
Date: Wed, 26 Apr 2023 14:24:54 +0930
Subject: [PATCH] Add SafeViewPager to fix touch exception in
 MediaPreviewActivity (#1166)

---
 .../securesms/components/SafeViewPager.kt     | 30 +++++++++++++++++++
 .../res/layout/media_preview_activity.xml     |  2 +-
 2 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/java/org/thoughtcrime/securesms/components/SafeViewPager.kt

diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/SafeViewPager.kt b/app/src/main/java/org/thoughtcrime/securesms/components/SafeViewPager.kt
new file mode 100644
index 000000000..674847873
--- /dev/null
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/SafeViewPager.kt
@@ -0,0 +1,30 @@
+package org.thoughtcrime.securesms.components
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.AttributeSet
+import android.view.MotionEvent
+import androidx.viewpager.widget.ViewPager
+
+/**
+ * An extension of ViewPager to swallow erroneous multi-touch exceptions.
+ *
+ * @see https://stackoverflow.com/questions/6919292/pointerindex-out-of-range-android-multitouch
+ */
+class SafeViewPager @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : ViewPager(context, attrs) {
+    @SuppressLint("ClickableViewAccessibility")
+    override fun onTouchEvent(event: MotionEvent?): Boolean = try {
+        super.onTouchEvent(event)
+    } catch (e: IllegalArgumentException) {
+        false
+    }
+
+    override fun onInterceptTouchEvent(event: MotionEvent?): Boolean = try {
+        super.onInterceptTouchEvent(event)
+    } catch (e: IllegalArgumentException) {
+        false
+    }
+}
diff --git a/app/src/main/res/layout/media_preview_activity.xml b/app/src/main/res/layout/media_preview_activity.xml
index 2f6aaff45..78327b6cc 100644
--- a/app/src/main/res/layout/media_preview_activity.xml
+++ b/app/src/main/res/layout/media_preview_activity.xml
@@ -22,7 +22,7 @@
 
     </com.google.android.material.appbar.AppBarLayout>
 
-    <androidx.viewpager.widget.ViewPager
+    <org.thoughtcrime.securesms.components.SafeViewPager
         android:id="@+id/media_pager"
         android:layout_width="match_parent"
         android:layout_height="match_parent"