Shared element composable inside LazyRow crashes while scrolling horizontally

[Yash-Garg]

Please complete the following information:

• Library Version - v0.2.2
• Test Device(s) - Emulator with Android 13, Poco F1 with Android 12

Describe the Bug:

How do I handle the shared element transition of a composable within a LazyRow?
The app just crashes when I try to scroll through the row, the transition works fine as intended.

Expected Behavior:

The LazyRow should scroll horizontally, but instead crashes.

Stacktrace:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: app.test.compose, PID: 3603
    java.lang.IllegalStateException: Check failed.
        at androidx.compose.ui.node.LayoutNodeLayoutDelegate$LookaheadPassDelegate.replace(LayoutNodeLayoutDelegate.kt:1045)
        at androidx.compose.ui.node.LayoutNode.lookaheadReplace$ui_release(LayoutNode.kt:829)
        at androidx.compose.ui.node.MeasureAndLayoutDelegate.measureAndLayout-0kLqBqw(MeasureAndLayoutDelegate.kt:352)
        at androidx.compose.ui.platform.AndroidComposeView.measureAndLayout-0kLqBqw(AndroidComposeView.android.kt:783)
        at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$precompose$1.premeasure-0kLqBqw(SubcomposeLayout.kt:671)
        at androidx.compose.foundation.lazy.layout.LazyLayoutPrefetcher.run(LazyLayoutPrefetcher.android.kt:187)
        at android.os.Handler.handleCallback(Handler.java:942)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7898)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)

[sphrak]

@Yash-Garg I don't think any of the lazy Column/Row/Grid APIs are supported yet

• https://issuetracker.google.com/issues/240016022
• https://issuetracker.google.com/issues/233837589

[Yash-Garg]

@Yash-Garg I don't think any of the lazy Column/Row/Grid APIs are supported yet

• https://issuetracker.google.com/issues/240016022
• https://issuetracker.google.com/issues/233837589

Ah, okay. Thank you for the quick response!