i try to run sample with Constraints but without l...

# compose

[camkadev]

i try to run sample with Constraints but without luck because Tag modifier hidden somewhere, can't import them, any idea?

[Mihai Popa]

Which sample exactly? The ConstraintLayout one?

[codeslubber]

is there a ConstraintLayout sample??

[Mihai Popa]

Yes, in ConstraintLayoutActivity.kt

[Ash]

https://android-review.googlesource.com/c/platform/frameworks/support/+/1147725/22/ui/ui-layout/integration-tests/layout-demos/src/main/java/androidx/ui/layout/demos/ConstraintLayoutActivity.kt#33 but I can not find this Tag modifier

[Mihai Popa]

The sample has been updated in the meantime since the CL was merged: https://cs.android.com/androidx/platform/frameworks/support/+/androidx-master-dev:ui/ui-layout/integration-tests/layout-demos/src/main/java/androidx/ui/layout/demos/ConstraintLayoutActivity.kt?q=constraintlayoutactivity.kt&ss=androidx

[carbaj0]

val half = createGuidelineFromLeft(percent = 0.5f)
text1.apply {
    left constrainTo half
    left.margin = 50.dp
    bottom constrainTo <http://text2.top|text2.top>
}

[carbaj0]

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.acv.arrowcompose, PID: 12969
    java.lang.AssertionError: LEFT
        at androidx.constraintlayout.solver.widgets.Guideline.getAnchor(Guideline.java:156)
        at androidx.constraintlayout.solver.state.ConstraintReference.applyConnection(ConstraintReference.java:568)
        at androidx.constraintlayout.solver.state.ConstraintReference.apply(ConstraintReference.java:633)
        at androidx.ui.layout.constraintlayout.ConstraintSetBuilderScope$Companion$verticalAnchorFunctions$1.invoke(ConstraintLayout.kt:534)
        at androidx.ui.layout.constraintlayout.ConstraintSetBuilderScope$Companion$verticalAnchorFunctions$1.invoke(Unknown Source:3)
        at androidx.ui.layout.constraintlayout.ConstraintSetBuilderScope$VerticalAnchor$ConstrainedLayoutAnchor.constrainTo(ConstraintLayout.kt:239)