Question 126971 in Android Studio Question posted in
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Android Studio – Can no longer view Jetpack Compose Previews. Failed to instantiate one or more classes (ComposeViewAdapter)

I’ve recently got an error preventing any Jetpack Compose previews from being displayed as follows:

Failed to instantiate one or more classes
The following classes could not be instantiated:
     -androidx.compose.ui.tooling.ComposeViewAdapter(Open Class, Show Exception, Clear Cache)

if this is an unexpected error you can also try to build the project, then manually refresh the layout

java.lang.NoClassDefFoundError: Could not initialize class androidx.customview.poolingcontainer.PoolingContainer
    at androidx.compose.ui.platform.ViewCompositionStrategy$DisposeOnDetachedFromWindowIfNotInPoolingContainer.installFor(ViewCompositionStrategy.android.kt:97)
    at androidx.compose.ui.platform.AbstractComposeView.<init>(ComposeView.android.kt:123)
    at androidx.compose.ui.platform.ComposeView.<init>(ComposeView.android.kt:392)
    at androidx.compose.ui.platform.ComposeView.<init>(ComposeView.android.kt:388)
    at androidx.compose.ui.tooling.ComposeViewAdapter.<init>(ComposeViewAdapter.kt:131)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:339)
    at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:176)
    at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:136)
    at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:301)
    at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:417)
    at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:428)
    at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:332)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:965)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:663)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:505)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:363)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:436)
    at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:121)
    at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:739)
    at com.android.tools.idea.rendering.RenderTask.lambda$inflate$8(RenderTask.java:895)
    at com.android.tools.idea.rendering.RenderExecutor$runAsyncActionWithTimeout$2.run(RenderExecutor.kt:187)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:829)

I have tried clearing the cache, rebuilding my project, cleaning my project as suggested but nothing has helped. I have had the same issue on both Android Studio Bumblebee 2021.2.1 Patch 3 as well as Chipmunk 2021.2.1 beta 4.

I am currently using version 1.1.1 for all my Compose related dependencies, but have tried downgrading and using newer versions but nothing helps.

implementation 'androidx.core:core-ktx:1.7.0'
implementation "androidx.compose.ui:ui:1.1.1"
implementation "androidx.compose.material:material:1.1.1"
implementation "androidx.compose.ui:ui-tooling-preview:1.1.1"
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
implementation 'androidx.activity:activity-compose:1.1.1'

I think there are a couple of questions on here asking similar things, but they are all very old and use long outdated versions of Compose and Android Studio, so they are not very helpful.

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2

Answers


  1. 0

    It is a known bug: https://issuetracker.google.com/issues/227767363

    Google is currently working on a fix but there is already a workaround: add these dependencies to every module where you use the Compose preview:

    debugImplementation "androidx.customview:customview:1.2.0-alpha01"
debugImplementation "androidx.customview:customview-poolingcontainer:1.0.0-alpha01"

    If you have a common core/base/ui module, you can add it there and use Api instead of Implementation to avoid adding it to every module:

    debugApi "androidx.customview:customview:1.2.0-alpha01"
debugApi "androidx.customview:customview-poolingcontainer:1.0.0-alpha01"

    Artifacts release reference

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  2. 0

    I was migrating one of my simple projects to compose and I faced this issue. Then I realised I forgot adding "androidx.compose.ui:ui-tooling:1.1.1"

    These are all of my dependencies for jetpack compose. Adding the last line did the trick. It took 20 min to realize this…

    implementation("androidx.compose.ui:ui:1.1.1")
implementation("androidx.compose.material:material:1.1.1")
implementation("androidx.compose.ui:ui-tooling-preview:1.1.1")
debugImplementation("androidx.compose.ui:ui-tooling:1.1.1")
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