Android Studio can not generate Binding class while use DataBinding

Question

Android Studio : 3.1.0, 3.1.1
Gradle : 4.4
Build Tools : 3.1.0

I am using the DataBinding library. when I add a layout file to project or add any view into the layout file, Android Studio cannot generate a Binding class for the layout, until rebuilding the project.

layout file:

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity">

    <data>

        <variable
            name="viewModel"
            type="com.qk365.thweeks.MainViewModel" />
    </data>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.design.widget.TabLayout
            android:id="@+id/main_tab"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_alignParentBottom="true"
            android:background="@android:color/white"
            android:elevation="5dp"
            app:tabGravity="fill"
            app:tabIndicatorHeight="0dp"
            app:tabMode="fixed"
            app:tabSelectedTextColor="#7343ea"
            app:tabTextAppearance="@style/TextAppearance.Design.Tab"
            app:tabTextColor="#181818" />

        <android.support.v4.view.ViewPager
            android:id="@+id/main_viewpager"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@id/main_tab">

        </android.support.v4.view.ViewPager>

    </RelativeLayout>
</layout>

I checked Android Studio logs, when layout file changes, there always have error message.

2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - Element: class com.intellij.psi.impl.source.xml.XmlFileImpl because: different providers: SingleRootFileViewProvider{myVirtualFile=file://E:/AndroidStudioProjects/thweeks/module-order/src/main/res/layout/order_fragment_pick_up_order.xml, content=VirtualFileContent{size=2845}}(5200996b); SingleRootFileViewProvider{myVirtualFile=file://E:/AndroidStudioProjects/thweeks/module-order/src/main/res/layout/order_fragment_pick_up_order.xml, content=VirtualFileContent{size=2845}}(398a3993)
invalidated at: see attachment 
com.intellij.psi.PsiInvalidElementAccessException: Element: class com.intellij.psi.impl.source.xml.XmlFileImpl because: different providers: SingleRootFileViewProvider{myVirtualFile=file://E:/AndroidStudioProjects/thweeks/module-order/src/main/res/layout/order_fragment_pick_up_order.xml, content=VirtualFileContent{size=2845}}(5200996b); SingleRootFileViewProvider{myVirtualFile=file://E:/AndroidStudioProjects/thweeks/module-order/src/main/res/layout/order_fragment_pick_up_order.xml, content=VirtualFileContent{size=2845}}(398a3993)
invalidated at: see attachment
    at com.intellij.psi.util.PsiUtilCore.ensureValid(PsiUtilCore.java:502)
    at com.intellij.psi.impl.smartPointers.SmartPointerManagerImpl.createSmartPsiElementPointer(SmartPointerManagerImpl.java:78)
    at com.intellij.psi.impl.smartPointers.SmartPointerManagerImpl.createSmartPsiElementPointer(SmartPointerManagerImpl.java:69)
    at com.intellij.psi.impl.smartPointers.SmartPointerManagerImpl.createSmartPsiElementPointer(SmartPointerManagerImpl.java:64)
    at com.intellij.psi.impl.ElementBase$ElementIconRequest.<init>(ElementBase.java:183)
    at com.intellij.psi.impl.ElementBase$ElementIconRequest.<init>(ElementBase.java:178)
    at com.intellij.psi.impl.ElementBase.computeIcon(ElementBase.java:110)
    at com.intellij.psi.impl.ElementBase.getIcon(ElementBase.java:86)
    at com.intellij.codeInsight.lookup.DefaultLookupItemRenderer._getRawIcon(DefaultLookupItemRenderer.java:79)
    at com.intellij.codeInsight.lookup.DefaultLookupItemRenderer.getRawIcon(DefaultLookupItemRenderer.java:48)
    at com.intellij.codeInsight.completion.JavaMethodCallElement.renderElement(JavaMethodCallElement.java:444)
    at com.intellij.codeInsight.completion.JavaCompletionUtil$4.renderElement(JavaCompletionUtil.java:468)
    at com.intellij.codeInsight.completion.JavaCompletionUtil$4.renderElement(JavaCompletionUtil.java:465)
    at com.intellij.codeInsight.lookup.LookupElementDecorator$VisagisteDecorator.renderElement(LookupElementDecorator.java:179)
    at com.intellij.codeInsight.lookup.LookupElementDecorator.renderElement(LookupElementDecorator.java:83)
    at com.intellij.codeInsight.lookup.impl.LookupCellRenderer.getListCellRendererComponent(LookupCellRenderer.java:150)
    at com.intellij.ui.ExpandedItemListCellRendererWrapper.getListCellRendererComponent(ExpandedItemListCellRendererWrapper.java:38)
    at javax.swing.plaf.basic.BasicListUI.paintCell(BasicListUI.java:209)
    at com.intellij.ui.components.WideSelectionListUI.paintCell(WideSelectionListUI.java:56)
    at javax.swing.plaf.basic.BasicListUI.paintImpl(BasicListUI.java:317)
    at javax.swing.plaf.basic.BasicListUI.paint(BasicListUI.java:240)
    at com.intellij.ui.components.WideSelectionListUI.paint(WideSelectionListUI.java:32)
    at javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
    at javax.swing.JComponent.paintComponent(JComponent.java:780)
    at com.intellij.ui.components.JBList.paintComponent(JBList.java:186)
    at javax.swing.JComponent.paint(JComponent.java:1056)
    at com.intellij.ui.components.JBList.paint(JBList.java:118)
    at javax.swing.JComponent.paintChildren(JComponent.java:889)
    at javax.swing.JComponent.paint(JComponent.java:1065)
    at javax.swing.JViewport.paint(JViewport.java:728)
    at com.intellij.ui.components.JBViewport.paint(JBViewport.java:236)
    at javax.swing.JComponent.paintChildren(JComponent.java:889)
    at javax.swing.JComponent.paint(JComponent.java:1065)
    at javax.swing.JComponent.paintChildren(JComponent.java:889)
    at javax.swing.JComponent.paint(JComponent.java:1065)
    at javax.swing.JComponent.paintChildren(JComponent.java:889)
    at javax.swing.JComponent.paint(JComponent.java:1065)
    at javax.swing.JLayeredPane.paint(JLayeredPane.java:586)
    at javax.swing.JComponent.paintToOffscreen(JComponent.java:5210)
    at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1579)
    at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1502)
    at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:306)
    at javax.swing.RepaintManager.paint(RepaintManager.java:1272)
    at javax.swing.JComponent._paintImmediately(JComponent.java:5158)
    at javax.swing.JComponent.paintImmediately(JComponent.java:4969)
    at javax.swing.RepaintManager$4.run(RepaintManager.java:831)
    at javax.swing.RepaintManager$4.run(RepaintManager.java:814)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:814)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:789)
    at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:738)
    at javax.swing.RepaintManager.access$1200(RepaintManager.java:64)
    at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1732)
    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:822)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:650)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:366)
    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)
2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - Android Studio 3.1.1  Build #AI-173.4697961 
2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - JDK: 1.8.0_152-release 
2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - VM: OpenJDK 64-Bit Server VM 
2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - Vendor: JetBrains s.r.o 
2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - OS: Windows 10 
2018-04-17 11:20:01,699 [e-1024-b02]  ERROR - .intellij.psi.impl.ElementBase - Last Action: EditorChooseLookupItem

It is a bug of Android Studio. issuetracker.google.com/issues/77607040 — Victor
– Victor, Commented Apr 20, 2018 at 1:37
This is a bug of Android Studio. Fixed in Android Studio 3.2.1. — Victor
– Victor, Commented Nov 8, 2018 at 8:26

Sabya · Accepted Answer · 2018-05-21 08:16:54Z

9

I had the same problem. No matter what I tried it was not able to generate binding class. The trick was that you have to rename your layout xml file. Say you have a xml file my_layout.xml then rename it to my_layout_temp.xml. Now the binding class will be generated with name MyLayoutTempBinding. If you don't like the name then you can rename it back to my_layout.xml. At the end it will solve the binding class generate issue.

answered May 21, 2018 at 8:16

Sabya

99612 silver badges21 bronze badges

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Comments

samus · Accepted Answer · 2018-09-11 18:11:41Z

Note: For initial debugging steps see Khemraj's answer here Data Binding class not generated

Android Studio : 3.1.4
Gradle : 4.4
Build Tools : 28.0.0

I can see the auto-generated binding classes momentarily after issuing a

File > Invalidate Caches / Restart

but only while the indexing is paused, immediately after Android Studio restarts (I should probably use something other than "databinding" for a test project name):

While paused, ActivityMain2Binding will be recognized by compiler, however the build and make operations are not available. Shortly after resuming the indexing the associated binding classes are removed and the IDE error mentioned in the OP is logged.

Update (2018.09.11)

Using a tip found in the bug post commented above (https://issuetracker.google.com/issues/77607040), I changed the Data Binding setting to

I then added a reference to the generated class

wakwak3125 · Accepted Answer · 2018-04-17 11:01:45Z

0

I have the same error in the same environment as you. But unfortunately, I could not resolve this problem with Android Studio 3.1.1. For now, I'm using Android Studio 3.2 Canary11 and it works fine.

answered Apr 17, 2018 at 11:01

wakwak3125

345 bronze badges

1 Comment

Victor Over a year ago

I have tried Canary 11 just now, but Binding class still cannot be generated.

Tyler2P · Accepted Answer · 2022-05-01 19:18:16Z

0

The radical solution

You should add this in the build.gradle(Module) file to make the data binding enabled and press Sync

android {
    ...
    buildFeatures {
        dataBinding true
    }
}

edited May 1, 2022 at 19:18

Tyler2P

2,37030 gold badges26 silver badges34 bronze badges

answered May 1, 2022 at 6:49

George Tharwat

12 bronze badges

Comments

Victor · Accepted Answer · 2018-10-12 07:38:52Z

-2

This is a bug of Android Studio. Fixed in Android Studio 3.2.1.

answered Oct 12, 2018 at 7:38

Victor

5926 silver badges15 bronze badges

2 Comments

S1ngoooor Over a year ago

No, it wasn't fixed.

rajagrawal Over a year ago

This has trickled down to 3.5 too. I'll file a bug with them, if someone hasn't already.

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