Jetpack Compose Preview Render Problem with java.lang.ClassNotFoundException: android.os.ext.SdkExtensions error

Question

I was able to use compose preview but after some library updates, I cannot use it anymore. How can I solve this error?

java.lang.NoClassDefFoundError: android/os/ext/SdkExtensions   
at androidx.core.os.BuildCompat$Extensions30Impl.<clinit>(BuildCompat.java:302)   
at androidx.core.os.BuildCompat.<clinit>(BuildCompat.java:256)   
at androidx.compose.ui.text.android.BoringLayoutFactory.measure(BoringLayoutFactory.kt:49)   
at androidx.compose.ui.text.android.LayoutIntrinsics.getBoringMetrics(LayoutIntrinsics.kt:55)   
at androidx.compose.ui.text.android.LayoutIntrinsics.getMaxIntrinsicWidth(LayoutIntrinsics.kt:82)   
at androidx.compose.ui.text.platform.AndroidParagraphIntrinsics.getMaxIntrinsicWidth(AndroidParagraphIntrinsics.android.kt:64)   
at androidx.compose.ui.text.MultiParagraphIntrinsics$maxIntrinsicWidth$2.invoke(MultiParagraphIntrinsics.kt:82)   
at androidx.compose.ui.text.MultiParagraphIntrinsics$maxIntrinsicWidth$2.invoke(MultiParagraphIntrinsics.kt:80)   
at _layoutlib_._internal_.kotlin.UnsafeLazyImpl.getValue(Lazy.kt:81)   
at androidx.compose.ui.text.MultiParagraphIntrinsics.getMaxIntrinsicWidth(MultiParagraphIntrinsics.kt:80)   
at androidx.compose.foundation.text.TextDelegate.getMaxIntrinsicWidth(TextDelegate.kt:121)   
at androidx.compose.foundation.text.TextDelegate.layoutText-K40F9xA(TextDelegate.kt:200)   
at androidx.compose.foundation.text.TextDelegate.layout-NN6Ew-U(TextDelegate.kt:248)   
at androidx.compose.foundation.text.TextController$measurePolicy$1.measure-3p2s80s(CoreText.kt:306)   
at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0(InnerNodeCoordinator.kt:106)   
at androidx.compose.ui.graphics.SimpleGraphicsLayerModifier.measure-3p2s80s(GraphicsLayerModifier.kt:649)  
......

Answer 1

I had the same problem after updating androidx.core:core-ktx library from 1.9.0 to 1.10.0. After reverting back to 1.9.0 the preview is rendering again.

Looking at the release notes for 1.10.0, there was an update made to SdkExtensions (Pull request ).