IssueTracker

Seems to be a DNS problem with systems that have 'obtain DNS server address automatically'. Changed my system to a manual setting and the browser etc now work. SDK 2.2 didn't seem to mind the auto setting though.

Could you please describe how/where you changed your system to a manual setting?

Based on its date, this issue was originally reported before Android 2.3. Because of the many changes that existed in Android 4.x compared to previous versions, it's very likely that this issue doesn't exist in recent versions of Android like 4.2.2 or newer. Because of the high likelihood that this issue is obsolete, it is getting closed automatically by a script, without a human looking at it in detail. If the issue still exists on a Nexus 4 or Nexus 7 running Android 4.2.2 and is not related to Google applications, please open a new report accordingly.

java.lang.IllegalArgumentException: Unable to locate adb
        at com.android.tools.idea.run.editor.DeployTargetPickerDialog.<init>(DeployTargetPickerDialog.java:144)
        at com.android.tools.idea.run.editor.ShowChooserTargetProvider.showPrompt(ShowChooserTargetProvider.java:113)
        at com.android.tools.idea.run.AndroidRunConfigurationBase.getDeployTarget(AndroidRunConfigurationBase.java:600)
        at com.android.tools.idea.run.AndroidRunConfigurationBase.doGetState(AndroidRunConfigurationBase.java:281)
        at com.android.tools.idea.run.AndroidRunConfigurationBase.getState(AndroidRunConfigurationBase.java:241)
        at com.intellij.execution.runners.ExecutionEnvironment.getState(ExecutionEnvironment.java:158)
        at com.intellij.execution.runners.BaseProgramRunner.execute(BaseProgramRunner.java:55)
        at com.intellij.execution.runners.BaseProgramRunner.execute(BaseProgramRunner.java:50)
        at com.intellij.execution.ProgramRunnerUtil.executeConfigurationAsync(ProgramRunnerUtil.java:92)
        at com.intellij.execution.ProgramRunnerUtil.executeConfiguration(ProgramRunnerUtil.java:41)
        at com.intellij.execution.impl.ExecutionManagerImpl.restart(ExecutionManagerImpl.java:93)
        at com.intellij.execution.impl.ExecutionManagerImpl.access$300(ExecutionManagerImpl.java:44)
        at com.intellij.execution.impl.ExecutionManagerImpl$3.run(ExecutionManagerImpl.java:442)
        at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:232)
        at com.intellij.util.Alarm$Request.runSafely(Alarm.java:356)
        at com.intellij.util.Alarm$Request.run(Alarm.java:343)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:228)
        at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:315)
        at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.doRun(LaterInvocator.java:435)
        at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.runNextEvent(LaterInvocator.java:419)
        at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:403)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
        at java.awt.EventQueue.access$500(EventQueue.java:98)
        at java.awt.EventQueue$3.run(EventQueue.java:715)
        at java.awt.EventQueue$3.run(EventQueue.java:709)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
        at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:755)
        at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:704)
        at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:391)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

voilà ce qu'on m'affiche lorsque j’exécute mon programme

je ne vois pas comment résoudre ce problème. svp aidez moi

The easiest workaround would involve copying FragmentStateAdapter and FragmentViewHolder into your project, and in FragmentStateAdapter adding ensureFragment(holder.getAdapterPosition()) as the first line of placeFragmentInViewHolder method. Attached as a patch to your sample app.

We'll work on a proper fix. Might unblock you in the meantime though. Thanks again for reporting and a sample app.

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

commit 07cadad5116ff71ab161a8ef3433679d89530405
Author: Jakub Gielzak <jgielzak@google.com>
Date:   Mon Jul 29 15:17:08 2019

    Fix for FragmentStateAdapter transient state issue
   
    Fixes a crash when a ViewHolder which has gone through
    onFailedToRecycleView is shown again violating Adapter's design
    assumptions.
   
    Bug: 134246546
    Test: TransientStateFragmentTest
    Test: ./gradlew viewpager2:connectedCheck
   
    Change-Id: Ieb166c6fb48907cbb7aa46ab87a3ae4cc29591a6

A       viewpager2/src/androidTest/java/androidx/viewpager2/widget/TransientStateFragmentTest.kt
M       viewpager2/src/main/java/androidx/viewpager2/adapter/FragmentStateAdapter.java

https://android-review.googlesource.com/1092796
https://goto.google.com/android-sha1/07cadad5116ff71ab161a8ef3433679d89530405

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

commit a35a5180df0b98c4af4a4e119388f7d70d27ade4
Author: Jakub Gielzak <jgielzak@google.com>
Date:   Tue Jul 30 17:27:14 2019

    FragmentStateAdapter transient state fix follow-up
   
    Follow-up to Ieb166c6fb48907cbb7aa46ab87a3ae4cc29591a6:
    * Disabled tests on API < 16
    * Updated a comment
   
    Bug: 134246546
    Test: TransientStateFragmentTest
    Test: ./gradlew viewpager2:connectedCheck
   
    Change-Id: Id27c1267d4fc75c41849291322952fc1ea0e8d0d

M       viewpager2/src/androidTest/java/androidx/viewpager2/widget/TransientStateFragmentTest.kt
M       viewpager2/src/main/java/androidx/viewpager2/adapter/FragmentStateAdapter.java

https://android-review.googlesource.com/1093437
https://goto.google.com/android-sha1/a35a5180df0b98c4af4a4e119388f7d70d27ade4

The fix is now in place and should come out in the next release.

Fixed in now released beta03 - https://developer.android.com/jetpack/androidx/releases/viewpager2#1.0.0-beta03

I can't reproduce this myself but I get this issue in production on Xiaomi running Android 10 with ViewPager2 1.0.0 stable release. Any idea what could cause it now?

Hi, could you share the stack trace?

Here's an issue I created since this was marked as fixed: https://issuetracker.google.com/issues/147688910

I am facing this issue in 1.0.0 release

Fatal Exception: java.lang.IllegalStateException
Design assumption violated.
androidx.viewpager2.adapter.FragmentStateAdapter.placeFragmentInViewHolder + 287 (FragmentStateAdapter.java:287)
androidx.viewpager2.adapter.FragmentStateAdapter$1.onLayoutChange + 190 (FragmentStateAdapter.java:190)
android.view.View.layout + 21131 (View.java:21131)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
androidx.recyclerview.widget.RecyclerView$LayoutManager.layoutDecoratedWithMargins + 9587 (RecyclerView.java:9587)
androidx.recyclerview.widget.LinearLayoutManager.layoutChunk + 1685 (LinearLayoutManager.java:1685)
androidx.recyclerview.widget.LinearLayoutManager.fill + 1587 (LinearLayoutManager.java:1587)
androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren + 665 (LinearLayoutManager.java:665)
androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2 + 4134 (RecyclerView.java:4134)
androidx.recyclerview.widget.RecyclerView.dispatchLayout + 3851 (RecyclerView.java:3851)
androidx.recyclerview.widget.RecyclerView.onLayout + 4404 (RecyclerView.java:4404)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
androidx.viewpager2.widget.ViewPager2.onLayout + 527 (ViewPager2.java:527)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
androidx.constraintlayout.widget.ConstraintLayout.onLayout + 1915 (ConstraintLayout.java:1915)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
android.widget.FrameLayout.layoutChildren + 323 (FrameLayout.java:323)
android.widget.FrameLayout.onLayout + 261 (FrameLayout.java:261)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
android.widget.LinearLayout.setChildFrame + 1828 (LinearLayout.java:1828)
android.widget.LinearLayout.layoutVertical + 1656 (LinearLayout.java:1656)
android.widget.LinearLayout.onLayout + 1565 (LinearLayout.java:1565)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
android.widget.FrameLayout.layoutChildren + 323 (FrameLayout.java:323)
android.widget.FrameLayout.onLayout + 261 (FrameLayout.java:261)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
android.widget.LinearLayout.setChildFrame + 1828 (LinearLayout.java:1828)
android.widget.LinearLayout.layoutVertical + 1656 (LinearLayout.java:1656)
android.widget.LinearLayout.onLayout + 1565 (LinearLayout.java:1565)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
android.widget.FrameLayout.layoutChildren + 323 (FrameLayout.java:323)
android.widget.FrameLayout.onLayout + 261 (FrameLayout.java:261)
com.android.internal.policy.DecorView.onLayout + 883 (DecorView.java:883)
android.view.View.layout + 21112 (View.java:21112)
android.view.ViewGroup.layout + 6400 (ViewGroup.java:6400)
android.view.ViewRootImpl.performLayout + 3368 (ViewRootImpl.java:3368)
android.view.ViewRootImpl.performTraversals + 2809 (ViewRootImpl.java:2809)
android.view.ViewRootImpl.doTraversal + 1815 (ViewRootImpl.java:1815)
android.view.ViewRootImpl$TraversalRunnable.run + 8228 (ViewRootImpl.java:8228)
android.view.Choreographer$CallbackRecord.run + 995 (Choreographer.java:995)
android.view.Choreographer.doCallbacks + 807 (Choreographer.java:807)
android.view.Choreographer.doFrame + 739 (Choreographer.java:739)
android.view.Choreographer$FrameDisplayEventReceiver.run + 981 (Choreographer.java:981)
android.os.Handler.handleCallback + 873 (Handler.java:873)
android.os.Handler.dispatchMessage + 99 (Handler.java:99)
android.os.Looper.loop + 226 (Looper.java:226)
android.app.ActivityThread.main + 7212 (ActivityThread.java:7212)
java.lang.reflect.Method.invoke (Method.java)
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run + 576 (RuntimeInit.java:576)
com.android.internal.os.ZygoteInit.main + 956 (ZygoteInit.java:956)

I also facing this issue in 1.0.0 release

finally I do can reproduce this bugs, please check this! https://stackoverflow.com/a/63114195/8868638.

Occurred in 1.0.0

java.lang.IllegalStateException: Design assumption violated.
        at androidx.viewpager2.adapter.FragmentStateAdapter.placeFragmentInViewHolder(FragmentStateAdapter.java:287)
        at androidx.viewpager2.adapter.FragmentStateAdapter.onViewAttachedToWindow(FragmentStateAdapter.java:276)
        at androidx.viewpager2.adapter.FragmentStateAdapter.onViewAttachedToWindow(FragmentStateAdapter.java:67)
        at androidx.recyclerview.widget.RecyclerView.dispatchChildAttached(RecyclerView.java:7556)
        at androidx.recyclerview.widget.RecyclerView$5.addView(RecyclerView.java:860)
        at androidx.recyclerview.widget.ChildHelper.addView(ChildHelper.java:107)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:8601)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:8559)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:8547)
        at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1641)
        at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587)
        at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4134)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3851)
        at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4404)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at androidx.viewpager2.widget.ViewPager2.onLayout(ViewPager2.java:527)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at com.google.android.material.appbar.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:148)
        at com.google.android.material.appbar.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:43)
        at com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1892)
        at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:918)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at androidx.drawerlayout.widget.DrawerLayout.onLayout(DrawerLayout.java:1231)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
        at android.view.View.layout(View.java:15596)
        at android.view.ViewGroup.layout(ViewGroup.java:4966)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:

version 1.0.0-beta03


java.lang.IllegalStateException: Design assumption violated.
        at androidx.viewpager2.adapter.FragmentStateAdapter.placeFragmentInViewHolder(FragmentStateAdapter.java:287)
        at androidx.viewpager2.adapter.FragmentStateAdapter.onViewAttachedToWindow(FragmentStateAdapter.java:276)
        at androidx.viewpager2.adapter.FragmentStateAdapter.onViewAttachedToWindow(FragmentStateAdapter.java:67)
        at androidx.recyclerview.widget.RecyclerView.dispatchChildAttached(RecyclerView.java:7867)
        at androidx.recyclerview.widget.RecyclerView$5.addView(RecyclerView.java:893)
        at androidx.recyclerview.widget.ChildHelper.addView(ChildHelper.java:107)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:8902)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:8860)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:8848)
        at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1645)
        at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1591)
        at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:668)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:4255)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:4010)
        at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4578)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at androidx.viewpager2.widget.ViewPager2.onLayout(ViewPager2.java:527)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at com.android.internal.policy.DecorView.onLayout(DecorView.java:804)
        at android.view.View.layout(View.java:23219)
        at android.view.ViewGroup.layout(ViewGroup.java:6532)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:3686)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3144)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2115)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8582)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:975)
        at android.view.Choreographer.doCallbacks(Choreographer.java:799)
        at android.view.Choreographer.doFrame(Choreographer.java:734)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:960)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:236)
        at android.app.ActivityThread.main(ActivityThread.java:7864)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:620)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1011)

The cause is getItemId return the  duplicate id.
I find self test stable reproduction.