IssueTracker

Hi, thanks for reporting, we'll have a look. If you could provide us with a minimum sample app to reproduce the issue, that'd be very helpful.

I confirm I managed to reproduce with API 23 emulator and the following patch on the sample app. Will investigate further.

Patch below.

***

Index: app/src/main/java/androidx/viewpager2/integration/testapp/cards/CardView.kt
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- app/src/main/java/androidx/viewpager2/integration/testapp/cards/CardView.kt (revision 38ea42c142729c777dcf8f3e4bd5100aeca981ec)
+++ app/src/main/java/androidx/viewpager2/integration/testapp/cards/CardView.kt (date 1565281963000)
@@ -16,9 +16,11 @@
 
 package androidx.viewpager2.integration.testapp.cards
 
+import android.text.SpannableStringBuilder
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.EditText
 import android.widget.TextView
 
 import androidx.annotation.ColorRes
@@ -28,7 +30,7 @@
 /** Inflates and populates a [View] representing a [Card]  */
 class CardView(layoutInflater: LayoutInflater, container: ViewGroup?) {
     val view: View = layoutInflater.inflate(R.layout.item_card_layout, container, false)
-    private val textSuite: TextView
+    private val textSuite: EditText
     private val textCorner1: TextView
     private val textCorner2: TextView
 
@@ -42,7 +44,7 @@
      * Updates the view to represent the passed in card
      */
     fun bind(card: Card) {
-        textSuite.text = card.suit
+        textSuite.text = SpannableStringBuilder(card.suit)
         view.setBackgroundResource(getColorRes(card))
 
         val cornerLabel = card.cornerLabel
Index: app/src/main/res/layout/item_card_layout.xml
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- app/src/main/res/layout/item_card_layout.xml        (revision 38ea42c142729c777dcf8f3e4bd5100aeca981ec)
+++ app/src/main/res/layout/item_card_layout.xml        (date 1565281963000)
@@ -31,13 +31,15 @@
         android:textAppearance="@android:style/TextAppearance.Large"
         tools:text="A"/>
 
-    <TextView
+    <EditText
         android:id="@+id/label_center"
-        android:layout_width="wrap_content"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
+        android:inputType="text"
+        android:maxLines="1"
         android:textAppearance="@android:style/TextAppearance.Large"
-        tools:text="♠"/>
+        tools:text="♠" />
 
     <TextView
         android:id="@+id/label_bottom"

Corrected video

Project: platform/frameworks/support
Branch: androidx-master-dev

commit 47ac9fee0e3d43b4da33f53b8a2ff590f0d46079
Author: Jakub Gielzak <jgielzak@google.com>
Date:   Tue Aug 20 13:57:06 2019

    Addressed issues with EditText causing scroll
   
    EditText methods: bringPointIntoView, and handleFocusGainInternal
    trigger requestChildRectangleOnScreen in ViewPager2's internal
    RecyclerView.
   
    This can cause:
    - unwanted scrolling -- e.g. when typing on some API versions
    - a jump to page 0 -- EditText sometimes reports over -1M px mScrollX
   
    This fix bypasses requestChildRectangleOnScreen calculations taking
    advantage of the fact that PagerSnapHelper constraints valid scroll
    values to a snapped position ones, and as a result, the problem is
    reduced to choosing the correct currentItem.
   
    Bug: 138044582
    Bug: 139432498
    Test: ./gradlew viewpager2:connectedCheck
   
    Change-Id: Ia4d3e4e6734183e64f261c7cc76d669deae78da5

A       viewpager2/src/androidTest/java/androidx/viewpager2/widget/EditTextFocusTest.kt
M       viewpager2/src/main/java/androidx/viewpager2/widget/ViewPager2.java

https://android-review.googlesource.com/1107013
https://goto.google.com/android-sha1/47ac9fee0e3d43b4da33f53b8a2ff590f0d46079

Fix [1]  for this is planned to be released in 1.0.0-beta04.

[1] http://aosp/1107013

beta04 with a fix for this was released today