Documentation is vague about iris/face support on Android 9 [140252778]

Fixed

Bug

Status Update

No update yet.

Description

ga...@gtempaccount.com

created issue #1

Aug 30, 2019 09:12PM

https://source.android.com/security/biometric
"Android 9 only includes fingerprint integration for BiometricPrompt. However, integrated support for other biometric modalities are forthcoming." - is it forthcoming to Android 9 and above, or to Android 10 and above?

https://developer.android.com/reference/androidx/biometric/BiometricPrompt
"On devices running P and above, this will show a system-provided authentication prompt, using a device's supported biometric (fingerprint, iris, face, etc)." - we tested this on Galaxy S10, S9, S8, all of which are currently on P and all of which has a system setting for iris / face id, and got a fingerprint dialog only with BiometricPrompt. So again, is iris/face supposed to work on Android 9 with this API? Or is the issue that Samsung's sensors are considered "weak biometrics" so they will never be supported by BiometricPrompt? Is there a strong biometrics device on the market (besides the upcoming Pixel 4) to which face support is coming with BiometricPrompt on Android 9?

Comments

20...@gmail.com <20...@gmail.com> #2Oct 2, 2019 10:58AM

Seems like it is caused by the subcompose(BottomSheetScaffoldLayoutSlot.Fab, fab)[0].measure(looseConstraints) line in the bottom sheet. Seems like you have the floatingActionButton = {} passed in your scaffold. setting it to null instead should solve the issue.

@jossi, could you take a look if we can handle this more gracefully and whether it makes sense?

cu...@google.com <cu...@google.com> Jan 28, 2020 09:23PM

Reassigned to cu...@google.com.

kc...@google.com <kc...@google.com> Nov 17, 2021 07:03PM

Reassigned to an...@google.com.

ap...@google.com <ap...@google.com> #3Nov 26, 2024 07:25PM

Marked as fixed.

Your assessment is correct; changing the fab to null prevents the crash. Maybe still warrants an empty check on the Measurables in addition to the null check.

pr...@google.com <pr...@google.com> #4Jan 15, 2025 06:30PM

We are also seeing this but at `BottomSheetScaffold.kt:447`:

```
val bodyPlaceable = subcompose(BottomSheetScaffoldLayoutSlot.Body) {
body(PaddingValues(bottom = sheetPeekHeight))
}[0].measure(bodyConstraints)
```

This happens whenever the body of BottomSheetScaffold is empty

```
E/AndroidRuntime: FATAL EXCEPTION: main
Process: co.minm, PID: 622
java.lang.IndexOutOfBoundsException: Index 0 is out of bounds. The list has 0 elements.
at androidx.compose.runtime.collection.MutableVectorKt.checkIndex(MutableVector.kt:1135)
at androidx.compose.runtime.collection.MutableVectorKt.access$checkIndex(MutableVector.kt:1)
at androidx.compose.runtime.collection.MutableVector$MutableVectorList.get(MutableVector.kt:940)
at androidx.compose.material.BottomSheetScaffoldKt$BottomSheetScaffoldLayout$1$1.invoke-0kLqBqw(BottomSheetScaffold.kt:447)
at androidx.compose.material.BottomSheetScaffoldKt$BottomSheetScaffoldLayout$1$1.invoke(BottomSheetScaffold.kt:430)
at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$createMeasurePolicy$1.measure-3p2s80s(SubcomposeLayout.kt:590)
at androidx.compose.ui.node.InnerPlaceable.measure-BRTryo0(InnerPlaceable.kt:44)
at androidx.compose.ui.node.LayoutNode$performMeasure$1.invoke(LayoutNode.kt:1428)
at androidx.compose.ui.node.LayoutNode$performMeasure$1.invoke(LayoutNode.kt:1427)
at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:2099)
at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:112)
at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:78)
at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release(OwnerSnapshotObserver.kt:66)
at androidx.compose.ui.node.LayoutNode.performMeasure-BRTryo0$ui_release(LayoutNode.kt:1427)
at androidx.compose.ui.node.OuterMeasurablePlaceable.remeasure-BRTryo0(OuterMeasurablePlaceable.kt:94)
at androidx.compose.ui.node.OuterMeasurablePlaceable.measure-BRTryo0(OuterMeasurablePlaceable.kt:75)
at androidx.compose.ui.node.LayoutNode.measure-BRTryo0(LayoutNode.kt:1366)
at androidx.compose.foundation.layout.BoxKt$boxMeasurePolicy$1.measure-3p2s80s(Box.kt:115)
at androidx.compose.ui.node.InnerPlaceable.measure-BRTryo0(InnerPlaceable.kt:44)
at androidx.compose.ui.graphics.SimpleGraphicsLayerModifier.measure-3p2s80s(GraphicsLayerModifier.kt:405)
at androidx.compose.ui.node.ModifiedLayoutNode.measure-BRTryo0(ModifiedLayoutNode.kt:53)
at androidx.compose.foundation.layout.FillModifier.measure-3p2s80s(Size.kt:658)
at androidx.compose.ui.node.ModifiedLayoutNode.measure-BRTryo0(ModifiedLayoutNode.kt:53)
at androidx.compose.ui.node.LayoutNode$performMeasure$1.invoke(LayoutNode.kt:1428)
at androidx.compose.ui.node.LayoutNode$performMeasure$1.invoke(LayoutNode.kt:1427)
at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:2099)
at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:112)
at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:78)
at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release(OwnerSnapshotObserver.kt:66)
at androidx.compose.ui.node.LayoutNode.performMeasure-BRTryo0$ui_release(LayoutNode.kt:1427)
at androidx.compose.ui.node.OuterMeasurablePlaceable.remeasure-BRTryo0(OuterMeasurablePlaceable.kt:94)
at androidx.compose.ui.node.OuterMeasurablePlaceable.measure-BRTryo0(OuterMeasurablePlaceable.kt:75)
at androidx.compose.ui.node.LayoutNode.measure-BRTryo0(LayoutNode.kt:1366)
at androidx.compose.foundation.layout.BoxKt$boxMeasurePolicy$1.measure-3p2s80s(Box.kt:115)
at androidx.compose.ui.node.InnerPlaceable.measure-BRTryo0(InnerPlaceable.kt:44)
at androidx.compose.ui.graphics.SimpleGraphicsLayerModifier.measure-3p2s80s(GraphicsLayerModifier.kt:405)
at androidx.compose.ui.node.ModifiedLayoutNode.measure-BRTryo0(ModifiedLayoutNode.kt:53)
at androidx.compose.foundation.layout.PaddingValuesModifier.measure-3p2s80s(Padding.kt:417)
at androidx.compose.ui.node.ModifiedLayoutNode.measure-BRTryo0(ModifiedLayoutNode.kt:53)
at androidx.compose.ui.node.LayoutNode$performMeasure$1.invoke(LayoutNode.kt:1428)
```

Issue 140252778